Audi Vehicle Models Audi S3 2013-present Torque Specifications
Audi Vehicle Models Audi S3 2013-present

Audi Vehicle Models Audi S3 2013-present Torque Specifications

Complete Audi Vehicle Models Audi S3 2013-present torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide
ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

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Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

2.0l Engine

Torque specifications for 2.0L Engine

Engine Block And Internals

1

Cylinder Head Bolts (Initial Stage)

M12
Torque Specification
1. 22 ft-lbs (30 N·m) 2. 90° 3. 90°
Important Notes
Tighten in sequence starting from the center and spiraling outwards. Use new bolts. Stage 1 is torque, Stage 2 and 3 are angles.
2

Main Bearing Cap Bolts

M10
Torque Specification
1. 48 ft-lbs (65 N·m) 2. 90°
Important Notes
Tighten in sequence from the center outward. Use new bolts. Stage 1 is torque, Stage 2 is angle.
3

Connecting Rod Cap Bolts

M9
Torque Specification
1. 22 ft-lbs (30 N·m) 2. 90°
Important Notes
Use new stretch bolts. Stage 1 is torque, Stage 2 is angle.
4

Oil Pan Bolts

M6
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern to avoid distortion. Be careful not to over-tighten.
5

Oil Pump Bolts

M6 / M8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Use 10 N·m (7 ft-lbs) for M6 bolts and 25 N·m (18 ft-lbs) for M8 bolts, if mixed.

Cylinder Head And Valvetrain

1

Camshaft Bearing Cap Bolts

M6
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a sequence starting from the center outwards, in alternating fashion.
2

Camshaft Adjuster Bolts

M8
Torque Specification
1. 15 ft-lbs (20 N·m) 2. 90°
Important Notes
Stage 1 is torque, stage 2 is angle. Tighten evenly.
3

Valve Cover Bolts

M6
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern. Be careful not to over-tighten. These go into aluminum and can easily strip.

Intake And Exhaust System

1

Intake Manifold Bolts

M6
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a sequence from the center outwards, in alternating fashion.
2

Exhaust Manifold/Turbocharger Bolts

M8 / M10
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use 25 N·m (18 ft-lbs) for M8 bolts and 40 N·m (30 ft-lbs) for M10 bolts, if mixed. Tighten evenly.
3

Turbocharger Oil Inlet/Outlet Line Bolts

M8
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten carefully. Ensure the sealing washers are correctly placed.
4

Downpipe/Exhaust System Flange Bolts

M8 / M10
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Use 25 N·m (18 ft-lbs) for M8 bolts and 40 N·m (30 ft-lbs) for M10 bolts, if mixed. Tighten evenly.

Cooling System

1

Water Pump Bolts

M6
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern to ensure even pressure. Be careful not to over-tighten.
2

Thermostat Housing Bolts

M6
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern. Be careful not to over-tighten the plastic housing.

Engine Accessories

1

Alternator Bolts

M8
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten evenly. Make sure the alternator is seated properly before tightening.
2

Starter Motor Bolts

M10
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Tighten evenly. Ensure the starter motor is flush against the engine block.
3

A/C Compressor Bolts

M8
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten evenly. Make sure the compressor is aligned before tightening.
4

Crankshaft Pulley Bolt

M18
Torque Specification
1. 110 ft-lbs (150 N·m) 2. 180°
Important Notes
Use a new bolt. Stage 1 is torque, stage 2 is angle. Support the crankshaft while tightening

Body

Torque specifications for Body

Front End Body Panels

1

Fender Bolts (Upper)

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the upper portion of the front fender to the chassis. Values based on similar year Audi S3 models and industry standards.
2

Fender Bolts (Lower)

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the lower portion of the front fender to the body or inner fender liner. Values based on similar year Audi S3 models and industry standards.
3

Bumper Cover Bolts/Screws (Upper)

M5 x 0.8 (estimated)
Torque Specification
3.7 ft-lbs (5 N·m)
Important Notes
Secures the upper edge of the front bumper cover. Estimated torque value based on typical plastic component applications.
4

Bumper Cover Bolts/Screws (Lower)

M5 x 0.8 (estimated)
Torque Specification
3.7 ft-lbs (5 N·m)
Important Notes
Secures the lower edge of the front bumper cover. Estimated torque value based on typical plastic component applications.
5

Headlight Bolts

M6 x 1.0
Torque Specification
4.4 ft-lbs (6 N·m)
Important Notes
Secures the headlight assembly to the body. Industry standard for small body fasteners.
6

Hood Hinge Bolts (Body Side)

M8 x 1.25
Torque Specification
18.4 ft-lbs (25 N·m)
Important Notes
Secures the hood hinge to the vehicle body. Estimated based on similar Audi models.
7

Hood Latch Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the hood latch mechanism to the radiator support or body. Based on similar Audi models and industry standards.
8

Grille Mounting Screws

M4 x 0.7 (estimated)
Torque Specification
1.8 ft-lbs (2.5 N·m)
Important Notes
Secures the front grille to the bumper cover. Estimated torque value based on plastic fastener application.

Doors

1

Door Hinge Bolts (Body Side)

M8 x 1.25
Torque Specification
1. 18.4 ft-lbs (25 N·m) 2. 90°
Important Notes
Attaches door hinges to the vehicle's body. Angle torque is crucial for proper clamping force. Based on similar Audi models and industry standards.
2

Door Hinge Bolts (Door Side)

M8 x 1.25
Torque Specification
18.4 ft-lbs (25 N·m)
Important Notes
Attaches door hinges to the door. Based on similar Audi models and industry standards.
3

Door Latch Bolts (Body Side)

M8 x 1.25
Torque Specification
14.8 ft-lbs (20 N·m)
Important Notes
Secures the door latch mechanism to the door frame. Based on similar Audi models and industry standards.
4

Door Lock Actuator Bolts

M6 x 1.0
Torque Specification
5.9 ft-lbs (8 N·m)
Important Notes
Secures the door lock actuator within the door. Industry standard.
5

Door Handle Bolts

M5 x 0.8
Torque Specification
5.2 ft-lbs (7 N·m)
Important Notes
Secures the outer door handle to the door. Industry standard.
6

Door Panel Screws/Clips

N/A
Torque Specification
N/A
Important Notes
Secures door panels and trim pieces to the door frame. Hand-tighten only. Use proper trim removal tools.

Rear End Body Panels

1

Rear Bumper Cover Bolts/Screws

M5 x 0.8 (estimated)
Torque Specification
3.7 ft-lbs (5 N·m)
Important Notes
Secures the rear bumper cover to the body structure and rear fenders. Estimated torque value based on similar plastic component applications.
2

Tail Light Bolts

M6 x 1.0
Torque Specification
4.4 ft-lbs (6 N·m)
Important Notes
Secures the rear tail light assembly to the vehicle body. Industry standard for small body fasteners.
3

Trunk/Hatch Hinge Bolts (Body Side)

M8 x 1.25
Torque Specification
1. 18.4 ft-lbs (25 N·m) 2. 90°
Important Notes
Secures the trunk or hatch hinges to the vehicle body. Angle torque is crucial for proper clamping force. Estimated based on similar Audi models and industry standards.
4

Trunk/Hatch Hinge Bolts (Hatch Side)

M8 x 1.25
Torque Specification
18.4 ft-lbs (25 N·m)
Important Notes
Secures the trunk/hatch hinges to the trunk/hatch structure. Estimated based on similar Audi models and industry standards.
5

Trunk/Hatch Latch Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the trunk or hatch latch mechanism to the body. Based on similar Audi models and industry standards.

Interior

1

Seat Mounting Bolts

M10 x 1.5
Torque Specification
29.5 ft-lbs (40 N·m)
Important Notes
Secure the front seats to the chassis. Critical for occupant safety. May require a specific torque sequence. Based on similar Audi models and industry standards.
2

Seat Belt Anchor Bolts

M10 x 1.5
Torque Specification
29.5 ft-lbs (40 N·m)
Important Notes
Secures seat belt anchors to the vehicle body. These are extremely safety-critical. Industry standard for seatbelt anchor bolts of this size.
3

Dashboard Mounting Bolts/Screws

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secure the dashboard assembly to the car body/frame. Estimated torque value based on similar Audi dashboard mounting.

Brakes

Torque specifications for Brakes

Front Brakes

1

Front Brake Caliper Mounting Bolts

M14 x 1.5
Torque Specification
103 ft-lbs (140 N·m)
Important Notes
Secures the brake caliper to the wheel bearing housing/steering knuckle. Critical for safety. Torque to spec.
2

Front Brake Caliper Guide Pin Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the caliper guide pins, allowing the caliper to slide smoothly. Proper torque is essential for even pad wear.
3

Front Brake Rotor Set Screw

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Holds the brake rotor in place during wheel installation. Not a load-bearing screw.
4

Front Brake Hose to Caliper Banjo Bolt

M10 x 1.0
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Attaches the brake hose to the caliper. Always use new crush washers. Torque to spec. Estimated value.
5

Front Wheel Speed Sensor Bolt

M6 x 1.0
Torque Specification
71 in-lbs (8 N·m)
Important Notes
Secures the wheel speed sensor to the steering knuckle/bearing carrier. Torque to spec. Estimated value.
6

Front Brake Pad Wear Sensor Clip Bolt/Screw

M4 x 0.7
Torque Specification
18 in-lbs (2 N·m)
Important Notes
Holds the wear sensor clip in place. Torque to spec. Estimated value.

Rear Brakes

1

Rear Brake Caliper Mounting Bolts

M12 x 1.5
Torque Specification
48 ft-lbs (65 N·m)
Important Notes
Secures the rear brake caliper to the axle carrier/rear suspension knuckle. Critical for safety. Torque to spec.
2

Rear Brake Caliper Guide Pin Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the caliper guide pins, allowing the caliper to slide smoothly. Proper torque is essential for even pad wear.
3

Rear Brake Rotor Set Screw

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Holds the brake rotor in place during wheel installation. Not a load-bearing screw.
4

Rear Brake Hose to Caliper Banjo Bolt

M10 x 1.0
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Attaches the brake hose to the caliper. Always use new crush washers. Torque to spec. Estimated value.
5

Rear Parking Brake Cable Bracket Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Holds the parking brake cable bracket. Torque to spec. Estimated value.
6

Rear Wheel Speed Sensor Bolt

M6 x 1.0
Torque Specification
71 in-lbs (8 N·m)
Important Notes
Secures the wheel speed sensor to the axle carrier. Torque to spec. Estimated value.
7

Rear Brake Pad Wear Sensor Clip Bolt/Screw

M4 x 0.7
Torque Specification
18 in-lbs (2 N·m)
Important Notes
Holds the wear sensor clip in place. Torque to spec. Estimated value.

Other Brake Components

1

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the master cylinder to the brake booster/firewall. Torque to spec. Estimated value.
2

Brake Booster Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the brake booster to the firewall. Critical for proper brake operation. Torque to spec. Estimated value.
3

Brake Line Fittings (Hard Line to Flexible Hose)

10-12mm Threads (estimated)
Torque Specification
13 ft-lbs (18 N·m)
Important Notes
Connects hard brake lines to flexible hoses. Use a flare nut wrench to prevent rounding the fitting. Torque is an average for this type of fitting, use a torque spec that is appropriate for the given size. Use new fittings if reusing is not recommended per manufacturer.
4

Brake Caliper Bleeder Screw

M7-M10 (estimated)
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
Used during bleeding process, proper torque prevents leakage and damage. Torque is an average value for a bleeder screw. Estimated value.
5

Brake Pedal Assembly Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the brake pedal assembly. Important for brake pedal stability. Torque to spec. Estimated value.

Dq250 Transmission

Torque specifications for Dq250 Transmission

Transmission Housing

1

Transmission Housing to Engine Block Bolts

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These are stretch bolts and require the +90 degree turn step. Failure to follow this procedure could result in bolt failure. Located around the transmission mating surface to the engine block. Always replace these bolts.
2

Transmission Case Bolts (Larger)

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Located around the perimeter of the transmission casing. Tighten in a criss-cross pattern.
3

Transmission Case Bolts (Smaller)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Located around the perimeter of the transmission casing. Estimated based on bolt size and similar Audi applications. Tighten in a criss-cross pattern.
4

Transmission Mount Bolts

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These are stretch bolts and require the +90 degree turn step. Failure to follow this procedure could result in bolt failure. Located where the transmission mounts connect to the chassis. Always replace these bolts.

Mechatronics Unit

1

Mechatronics Unit Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
These are smaller bolts often with an O-ring seal. Located where the mechatronics unit interfaces with the transmission casing.
2

Mechatronics Unit Electrical Connector Bolts

M5 x 0.8
Torque Specification
4.5 ft-lbs (6 N·m)
Important Notes
Estimated based on connector bolt size, similar Audi applications. Over-tightening could cause damage to the connector. Located where electrical connectors attach.

Dual Clutch Assembly

1

Clutch Housing Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Located on the outside of the clutch pack housing.
2

Clutch Fork Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Located where the clutch fork attaches to the transmission. Estimated based on bolt size and similar Audi applications.
3

Dual Clutch Fasteners

M10 x 1.5
Torque Specification
1. 22 ft-lbs (30 N·m) 2. 90°
Important Notes
These are often replaced and have specific installation procedure. Consult manufacturer instructions. These values are estimated from similar wet dual clutch systems. Always confirm with vehicle or manufacturer spec sheet. Tighten in a specific star pattern. Always replace these bolts.

Differential

1

Differential Cover Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Located on the diff cover. Tighten in a criss-cross pattern.
2

Differential Housing Bolts (internal)

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Located within the transmission casing. Estimated based on bolt size and similar Audi applications. Tighten in a criss-cross pattern.
3

Differential Mount Bolts

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These are stretch bolts and require the +90 degree turn step. Failure to follow this procedure could result in bolt failure. Always replace these bolts.

Gear Selector Mechanism

1

Gear Selector Lever Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Located on the outside of the transmission where the gear selection linkage attaches. Estimated based on bolt size, similar Audi applications.
2

Shift Rail Mounting Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Located internally within the transmission casing. Estimated based on bolt size, similar Audi applications.

Fluid Drain Fill

1

Transmission Fluid Drain Plug

M24 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Located on the bottom of the transmission case. Always use a new crush washer.
2

Transmission Fluid Fill Plug

M24 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Located on the transmission casing. Always use a new crush washer.

Wheel Speed Sensors

1

Wheel Speed Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Located on the transmission housing.

Drivetrain

Torque specifications for Drivetrain

Transmission Dsg

1

Transmission Mount Bolts (Engine Side)

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These bolts secure the transmission to the engine. Torque to specified value and then angle tighten. Replace bolts if removed.
2

Transmission Mount Bolts (Chassis Side)

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These bolts secure the transmission mount to the chassis. Torque to specified value and then angle tighten. Replace bolts if removed.
3

Mechatronic Unit Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
These bolts secure the Mechatronic unit to the transmission housing. Do not over-tighten.
4

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
These bolts seal the transmission oil pan. Proper torque is crucial for maintaining the seal.
5

Flywheel/Drive Plate Bolts (DSG)

M10 x 1.0
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These are critical fasteners connecting the flywheel/drive plate to the engine crankshaft. Replace bolts if removed. Torque to specified value and then angle tighten.
6

Transmission Drain Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures a leak-free seal of the transmission drain plug. Use new washer if required.
7

Transmission Fill Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures proper sealing of the transmission fill plug. Use new washer if required.

Transmission Manual

1

Transmission Mount Bolts (Engine Side)

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These bolts secure the transmission to the engine. Torque to specified value and then angle tighten. Replace bolts if removed.
2

Transmission Mount Bolts (Chassis Side)

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These bolts secure the transmission mount to the chassis. Torque to specified value and then angle tighten. Replace bolts if removed.
3

Flywheel Bolts (Manual)

M10 x 1.0
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These are critical fasteners connecting the flywheel to the engine crankshaft. Replace bolts if removed. Torque to specified value and then angle tighten.
4

Clutch Pressure Plate Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the pressure plate to the flywheel. Proper torque ensures consistent clutch operation. Estimated value based on bolt size.
5

Transmission Drain Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures a leak-free seal of the transmission drain plug. Use new washer if required.
6

Transmission Fill Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures proper sealing of the transmission fill plug. Use new washer if required.

Driveshafts Axles

1

Inner CV Joint Bolts (Transmission Side)

M8 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
These bolts secure the inner CV joint to the transmission output flange.
2

Outer CV Joint Bolt (Wheel Side)

M14 x 1.5
Torque Specification
1. 85 ft-lbs (115 N·m) 2. 180°
Important Notes
This critical bolt secures the axle to the wheel hub. Replace bolt if removed. Torque to specified value and then angle tighten.
3

Driveshaft Center Support Bearing Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
These bolts secure the center support bearing. Estimated value based on bolt size.

Rear Differential

1

Differential Mount Bolts (Chassis)

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These bolts secure the differential to the chassis. Torque to specified value and then angle tighten. Replace bolts if removed.
2

Rear Differential Cover Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the rear differential cover. Proper torque prevents fluid leaks.
3

Rear Differential Drain Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures a leak-free seal of the differential drain plug. Use new washer if required.
4

Rear Differential Fill Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures proper sealing of the differential fill plug. Use new washer if required.
5

Driveshaft Bolts (To Rear Diff)

M8 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
These bolts secure the driveshaft to the rear differential input flange. Proper torque is crucial for power transfer.

Transfer Case

1

Transfer Case Mount Bolts (Engine/Transmission)

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
Secures the transfer case to the engine and or transmission. Torque to specified value and then angle tighten. Replace bolts if removed.
2

Transfer Case Mount Bolts (Chassis)

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These bolts secure the transfer case mount to the chassis. Torque to specified value and then angle tighten. Replace bolts if removed.
3

Transfer Case Cover Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the transfer case cover. Proper torque prevents fluid leaks.
4

Transfer Case Drain Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures a leak-free seal of the transfer case drain plug. Use new washer if required.
5

Transfer Case Fill Plug

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensures proper sealing of the transfer case fill plug. Use new washer if required.

Electrical

Torque specifications for Electrical

Battery And Related Components

1

Battery Terminal Clamp Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensures a secure and low-resistance electrical connection. Located at the positive and negative battery terminals.
2

Battery Hold-Down Clamp Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Secures the battery in place, preventing movement that could damage connections or the battery itself. Located at the base of the battery housing.
3

Battery Ground Cable to Chassis Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Provides a crucial ground path for the entire electrical system. Located at the chassis grounding point, often near the battery. *Safety Critical*. Estimated value.
4

Battery Positive Terminal to Fuse Box Connector

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Connects the battery to the fuse box, ensuring proper power distribution. Located on the positive terminal connector.
5

Battery Sensor Module Mounting Bolt

M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Holds the battery sensor module in place, used to monitor the battery's condition. Located near the battery terminal. Estimated Value.

Starter And Alternator

1

Starter Mounting Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Securely mounts the starter to the engine block. Located on the starter housing, bolting to the engine block. *Safety Critical*. Estimated value.
2

Starter Solenoid Wire Terminal Nut

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Connects the control wire to the starter solenoid. Located on the starter solenoid terminal.
3

Alternator Mounting Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Securely mounts the alternator to the engine. Located on the alternator bracket, mounting to the engine block. Estimated value.
4

Alternator B+ Terminal Nut

M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Connects the alternator output wire to the battery. Located on the alternator B+ terminal. Estimated value.

Grounding Points

1

Engine Ground Strap to Chassis Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Provides a crucial ground path between the engine and the chassis. Located at the engine ground strap and chassis connection point. *Safety Critical*. Estimated value.
2

Body Ground Point Bolts

M6 x 1.0 / M8 x 1.25
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 18 ft-lbs (25 N·m)
Important Notes
Ensures proper grounding for various electrical components. Located on various body panels, fenders, and frame. Torque depends on bolt diameter (M6: 10 ft-lbs, M8: 18 ft-lbs). Refer to specific service documentation where possible for each location. *Safety Critical*. Estimated value.

Control Modules

1

Control Module Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Secures the control modules to the body or bracket. Located at the module mounting points. Estimated value.
2

Control Module Connector Screws/Bolts

M4 x 0.7
Torque Specification
3 ft-lbs (4 N·m)
Important Notes
Secures the wiring harness connectors to the modules. Located on the connector retention points. *Do not overtighten*. Estimated value.

Lighting System

1

Headlight Mounting Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Secures the headlight assembly to the vehicle. Located around the headlight mounting points.
2

Taillight Mounting Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Secures the taillight assembly to the vehicle. Located around the taillight mounting points.
3

Fog Light Mounting Bolts

M5 x 0.8
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Secures the fog light assembly to the vehicle. Located around the fog light mounting points.

Other Electrical Components

1

Fuse Box Mounting Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Secures the fuse box to the vehicle body. Located at the fuse box mounting points. Estimated value.
2

Wiring Harness Bracket Bolts

M5 x 0.8
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 8 ft-lbs (11 N·m)
Important Notes
Secures the wiring harness in place, preventing damage. Located on various brackets. Varies depending on bracket, M5 5-8ft-lbs. Estimated value.
3

ABS Sensor Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Securely holds the ABS wheel speed sensor in its position. Located on the wheel hub assembly.

Emissions Sensors

Torque specifications for Emissions_sensors

Oxygen Sensors

1

Pre-Catalyst Oxygen Sensor

M18 x 1.5 (estimated)
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated value based on industry standard for oxygen sensors. Ensure threads are clean and sensor is properly seated.
2

Post-Catalyst Oxygen Sensor

M18 x 1.5 (estimated)
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated value based on industry standard for oxygen sensors. Ensure threads are clean and sensor is properly seated.

Nox Egt Sensors

1

NOx Sensor Mounting Bolts

M6 x 1.0 (estimated)
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated based on bolt size and sensor type. Do not overtighten, sensor housing may be fragile. Use new bolts when possible.
2

EGT Sensor Mounting Bolt

M6 x 1.0 (estimated)
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated based on bolt size and sensor type. Do not overtighten, sensor housing may be fragile. Use new bolts when possible.

Intake Air Sensors

1

Manifold Absolute Pressure (MAP) Sensor Mounting Bolts

M5 x 0.8 (estimated)
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on sensor type and bolt size. Be careful not to overtighten; the sensor housing may crack.
2

Air Mass (MAF) Sensor Mounting Bolts (to housing)

M4 x 0.7 (estimated)
Torque Specification
4 ft-lbs (5 N·m)
Important Notes
Estimated value based on sensor type and housing material. Be careful not to overtighten; the sensor housing may crack. Use new screws when possible.

Crankcase Evap Sensors

1

Crankcase Ventilation (PCV) Valve Mounting Bolts

M6 x 1.0 (estimated)
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated based on similar components and bolt sizes. Avoid overtightening plastic components.
2

Evaporative Emission (EVAP) Purge Valve Mounting Bolts

M5 x 0.8 (estimated)
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated based on similar components. Avoid overtightening; mounting brackets can be fragile.

Secondary Air System

1

Secondary Air Injection (SAI) Pump Mounting Bolts

M8 x 1.25 (estimated)
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value based on similar components. Ensure secure and vibration-free mounting.
2

SAI Valve Mounting Bolts (to manifold)

M6 x 1.0 (estimated)
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Estimated value based on similar components. Proper torque is needed to seal gasket. Use new bolts when possible

Fuel System Sensor

1

Fuel Tank Pressure Sensor Mounting Bolt

M5 x 0.8 (estimated)
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar fuel system sensors. Use caution not to damage the sensor during installation.

Exhaust System

1

Catalytic Converter Mounting Flange Bolts (to downpipe/exhaust)

M10 x 1.5 (estimated)
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Estimated value based on similar exhaust systems. Always use new nuts and bolts when possible. Follow exhaust torque sequence (typically working from the center bolts out).
2

Exhaust system V-band Clamp Nut

M8 x 1.25 (estimated)
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on similar V-band clamps. Use a proper tightening sequence to ensure even clamping.

Intake Manifold

1

Intake Manifold Mounting Bolts

M8 x 1.25 (estimated)
Torque Specification
1. 18 ft-lbs (25 N·m) 2. 90°
Important Notes
Estimated based on similar Audi models. Follow the specific torque sequence (typically from center bolts outward) and torque-angle procedure. Use new bolts if possible.

Exhaust

Torque specifications for Exhaust

Turbo Downpipe

1

Downpipe to Turbocharger Flange Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
High-temperature fasteners. Should be replaced if removed. Tighten in a criss-cross pattern, multiple passes recommended.

Exhaust Midpipe

1

Downpipe to Exhaust Mid-pipe Flange Bolts/Nuts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Use new nuts for securing. Tighten in a criss-cross pattern, multiple passes recommended.
2

Exhaust Mid-pipe to Rear Muffler/Silencer Flange Bolts/Nuts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Use new nuts for securing. Tighten in a criss-cross pattern, multiple passes recommended.

Exhaust Mounts

1

Exhaust Mounting Bracket Bolts/Nuts (to Chassis)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Over-tightening can damage brackets. Check rubber hangers for damage.
2

Exhaust Mounting Bracket Bolts/Nuts (to Chassis) - Larger Brackets

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Over-tightening can damage brackets. Check rubber hangers for damage. Estimated value.

Exhaust Sensors

1

Oxygen Sensor (O2 Sensor) - Exhaust Pipe Threads

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure sensor threads are clean before installation. Do not over-tighten.

Exhaust Clamps

1

Exhaust Clamp Bolts (Large, 2.5"+)

Varies based on clamp
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Torque based on clamp type and size. Estimated value. Inspect clamp condition before use.
2

Exhaust Clamp Bolts (Small, <2.5")

Varies based on clamp
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque based on clamp type and size. Estimated value. Inspect clamp condition before use.

Exhaust Manifold

1

Exhaust Manifold to Cylinder Head Bolts

M8 x 1.25
Torque Specification
1. 18 ft-lbs (25 N·m) 2. 90°
Important Notes
These are typically torque-to-yield bolts and must be replaced. Follow the correct sequence for tightening.
2

Exhaust Manifold to Catalyst Flange Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
High-temperature fasteners, should be replaced if removed. Tighten in a criss-cross pattern.

Fuel

Torque specifications for Fuel

Fuel Pump Module

1

Fuel Pump Module Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Secures the fuel pump module to the fuel tank. Proper torque ensures a leak-free seal and prevents vibration. Located on top of the fuel tank, within the vehicle body.
2

Fuel Pump Electrical Connector Bracket Screw

M4 x 0.7
Torque Specification
4.5 ft-lbs (6 N·m)
Important Notes
Secures the bracket holding the electrical connector for the fuel pump. Prevents the connector from vibrating and coming loose, which could lead to fuel pump failure or electrical issues. Small screw attached to the fuel tank. Estimated value.

Fuel Filter

1

Fuel Filter Mounting Bracket Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the fuel filter housing to the vehicle chassis. Prevents vibration and ensures proper fuel line connections. Location near fuel tank or under the vehicle.
2

Fuel Filter Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
If the fuel filter housing itself has mounting bolts (some are clipped), this ensures a secure fit preventing leaks. These bolts would be small and typically attach to a plastic housing. Estimated value.

High Pressure Fuel Pump

1

High-Pressure Fuel Pump Mounting Bolts

M10 x 1.5
Torque Specification
1. 22 ft-lbs (30 N·m) 2. 90°
Important Notes
Secures the high-pressure fuel pump to the engine. Proper torque is critical to ensure proper pump operation, prevent leaks, and secure against engine vibrations. Usually located at the rear of the engine, attached to the cylinder head or block. Angle torque may vary, always refer to specific service information for exact angle value. These may be one-time-use fasteners.
2

High-Pressure Fuel Pump Fuel Line Connection Nut (to the pump)

M14 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the high-pressure fuel line to the pump. Proper torque is critical to prevent leaks. Located at the pump body. Often this is a banjo bolt or threaded fitting.

Fuel Lines And Brackets

1

High-Pressure Fuel Line Mounting Brackets to Engine

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Secures the high-pressure fuel lines to the engine to prevent vibration. Usually small brackets mounted to the block or head. Prevents rubbing and line failures. Multiple locations along the fuel rail and engine.
2

Low Pressure Fuel Line Clamps (Hose Clamps)

N/A
Torque Specification
N/A
Important Notes
Secures low-pressure fuel hoses to fuel lines or components. Over-tightening may damage lines or clamps. Typically located anywhere there are fuel hose connections from the tank to the high-pressure pump. Torque is hand tight plus 1/4 turn after contact.

Fuel Rail And Injectors

1

Fuel Rail Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the fuel rail to the intake manifold or cylinder head. Proper torque ensures a secure and vibration-free mount and prevents fuel injector leaks. Located along the intake manifold.
2

Fuel Injector Retaining Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Some models utilize bolts to secure the injectors in the fuel rail or head. This ensures injectors are held firmly for proper sealing and spray pattern.
3

Fuel Injector Rail Bolt/Nut

M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Secures the fuel injector rail to the cylinder head or intake manifold. Proper torque helps ensure a tight seal and prevents fuel leaks. Estimated value.

Fuel Tank And Filler Neck

1

Fuel Tank Filler Neck Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Secures the fuel filler neck to the vehicle body. Ensures proper alignment and a leak-free connection. Located around the fuel filler neck area. Estimated value.
2

Fuel Tank Vent Line Connections (Clamps)

N/A
Torque Specification
N/A
Important Notes
Secures vent lines related to the fuel tank vapor recovery system. Prevents leaks. Located near the fuel tank and often around the filler neck. Torque is hand tight plus 1/4 turn after contact.

Hvac

Torque specifications for Hvac

Evaporator System

1

Evaporator Housing Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Ensures proper sealing of the evaporator housing to the firewall. Estimated value based on similar Audi models and industry standards.
2

Expansion Valve Mounting Bolts

M6 x 1.0
Torque Specification
7.4 ft-lbs (10 N·m)
Important Notes
Secures the expansion valve to the evaporator core. Estimated value based on similar Audi models and industry standards. Use new o-rings or sealing washers when installing.

Blower Motor

1

Blower Motor Mounting Screws

M5 x 0.8 Self-Tapping
Torque Specification
5.2 ft-lbs (7 N·m)
Important Notes
Attaches the blower motor to the HVAC housing. Estimated value based on similar Audi models and industry standards for plastic housing fasteners.

Control Module

1

HVAC Control Module Mounting Screws

M4 x 0.7
Torque Specification
2.9 ft-lbs (4 N·m)
Important Notes
Secures the electronic control module, which may be mounted within the dash or HVAC housing itself. Estimated value based on similar electronic module fasteners within the vehicle.

Refrigerant Lines

1

Refrigerant Line Fitting Bolts (Compressor Side)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures refrigerant lines to the compressor. Use new sealing washers. Value based on similar Audi models and industry standards.
2

Refrigerant Line Fitting Bolts (Condenser Side)

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Secures refrigerant lines to the condenser. Use new sealing washers. Estimated value based on similar Audi models and industry standards. May be M8 x 1.25 on some models.
3

Refrigerant Pressure Switch Mounting Bolts/Nut

M6 x 1.0
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Secures the pressure switch to the refrigerant line. Use new sealing washers if applicable. Estimated value based on similar Audi models and industry standards.

Compressor System

1

Compressor Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the compressor to the engine block. Use new bolts. Estimated value based on similar Audi models and industry standards. Some applications may use M10.
2

Compressor Mounting Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Secures the compressor to the engine block. Use new bolts. Estimated value based on similar Audi models and industry standards. Some applications may use M8. **Safety Critical Fastener - Ensure accurate torque**.

Condenser System

1

Condenser Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the condenser to the vehicle's radiator support. Estimated value based on similar Audi models and industry standards.
2

Receiver Drier/Accumulator Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the receiver drier/accumulator to the vehicle. Estimated value based on similar Audi models and industry standards.

Actuators And Sensors

1

Temperature Sensor Mounting Screws

M3 x 0.5
Torque Specification
0.75 ft-lbs (1 N·m)
Important Notes
Secures temperature sensors inside the HVAC unit or cabin. Estimated value based on small sensor mounting screws.
2

Blend Door Actuator Mounting Screws

M4 x 0.7
Torque Specification
2.9 ft-lbs (4 N·m)
Important Notes
Secures the blend door actuators. Estimated value based on similar plastic actuator mounting fasteners.

Air Distribution

1

Air Distribution Housing Fasteners

M6 x 1.0 Self-Tapping
Torque Specification
5.2 ft-lbs (7 N·m)
Important Notes
Holds together sections of the air distribution housing. Estimated value based on similar plastic housing fasteners.

Suspension

Torque specifications for Suspension

Front Suspension

1

Front Strut Pinch Bolt

M14 x 1.5
Torque Specification
1. 66 ft-lbs (90 N·m) 2. 90°
Important Notes
Secures the strut to the steering knuckle. Critical for maintaining proper wheel alignment and suspension geometry. Failure can cause loss of control.
2

Front Strut Top Mount Bolts (to Body)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the top of the strut assembly to the vehicle's body. Important for stability and proper load transfer.
3

Front Lower Control Arm Ball Joint Nut (to Knuckle)

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
Connects the lower control arm to the steering knuckle, allowing for wheel movement. Critical for steering and suspension.
4

Front Lower Control Arm Bolts (to Subframe)

M12 x 1.5
Torque Specification
1. 52 ft-lbs (70 N·m) 2. 90°
Important Notes
Secures the lower control arm to the subframe, a key part of the suspension system.
5

Front Anti-Roll Bar Drop Link Nuts (to Strut)

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Connects the anti-roll bar to the strut, important for stability.
6

Front Anti-Roll Bar Drop Link Nuts (to Anti-Roll Bar)

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Connects the anti-roll bar to the drop link, critical for sway control.
7

Front Anti-Roll Bar Bracket Bolts (to Subframe)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the anti-roll bar brackets to the subframe, an important part of the suspension geometry. Value estimated based on similar size bolts.
8

Front Wheel Speed Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Secures the ABS sensor, allowing proper monitoring of wheel speed. Value estimated based on similar size bolts.
9

Tie Rod End Nut (to Knuckle)

M14 x 1.5
Torque Specification
1. 30 ft-lbs (40 N·m) 2. 90°
Important Notes
Connects the steering tie rod to the steering knuckle, a critical steering component.

Rear Suspension

1

Rear Strut Pinch Bolt

M14 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
Secures the rear strut to the knuckle/carrier, essential for suspension stability.
2

Rear Strut Top Mount Bolts (to Body)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the top of the rear strut assembly to the chassis.
3

Rear Lower Control Arm Inner Bolt (to Subframe)

M12 x 1.5
Torque Specification
1. 52 ft-lbs (70 N·m) 2. 90°
Important Notes
Attaches the control arm to the subframe, a fundamental component of the rear suspension.
4

Rear Lower Control Arm Outer Bolt (to Wheel Carrier)

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
Connects the lower control arm to the wheel carrier, essential for wheel alignment and control.
5

Rear Upper Control Arm Inner Bolt (to Body)

M12 x 1.5
Torque Specification
1. 52 ft-lbs (70 N·m) 2. 90°
Important Notes
Secures the upper control arm to the vehicle body.
6

Rear Upper Control Arm Outer Bolt (to Wheel Carrier)

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
Connects the upper control arm to the wheel carrier, essential for stability and handling.
7

Rear Anti-Roll Bar Drop Link Nuts (to Strut or Carrier)

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Connects the anti-roll bar to the rear suspension.
8

Rear Anti-Roll Bar Drop Link Nuts (to Anti-Roll Bar)

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Connects the anti-roll bar to the drop link, critical for controlling body roll.
9

Rear Anti-Roll Bar Bracket Bolts (to Chassis)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the anti-roll bar brackets to the body, crucial for anti-roll bar function. Value estimated based on similar size bolts.
10

Rear Wheel Speed Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Secures the ABS sensor to the wheel carrier. Value estimated based on similar size bolts.

Subframe

1

Front Subframe Bolts (to Body)

M14 x 2.0
Torque Specification
1. 74 ft-lbs (100 N·m) 2. 180°
Important Notes
Critical for securing the entire front suspension to the vehicle. Use new bolts. Torque-to-yield bolt.
2

Rear Subframe Bolts (to Body)

M14 x 2.0
Torque Specification
1. 74 ft-lbs (100 N·m) 2. 180°
Important Notes
Secures the rear suspension components, crucial for overall stability. Use new bolts. Torque-to-yield bolt.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What IS the recommended torque for the lug nuts on a 2016 Audi S3?

The recommended torque for lug nuts on a 2016 Audi S3 IS 129 Nm (95 lb-ft).

Q2

What torque wrench should I use for tightening bolts on my Audi S3?

Use a torque wrench with a range of 0-250 Nm (0-185 lb-ft) and an accuracy of ±4% to ensure proper torque application on your Audi S3.

Q3

How often should I check the torque of my Audi S3's bolts?

It IS recommended to check the torque of critical bolts, such as lug nuts, every 5,000 kilometers (3,100 miles) or after any significant suspension or wheel work.

Q4

What are the consequences of over-torquing bolts on an Audi S3?

Over-torquing bolts can lead to stripped threads, damaged components, or even catastrophic failure. Always follow the specified torque values and use a calibrated torque wrench.

Q5

Can I use a regular wrench to tighten bolts on my Audi S3?

No, it IS not advisable to use a regular wrench to tighten bolts on your Audi S3. A torque wrench IS essential for applying the precise amount of torque required.

Q6

How do I find the torque specifications for my specific Audi S3 model?

Refer to your Audi S3 owner's manual or consult an authorized Audi service center for the specific torque specifications for your model year and variant.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Digital Torque Wrench (10-100 Nm)

Essential for tightening fasteners to precise torque specifications, preventing damage and ensuring proper assembly. This range IS suitable for many applications on the S3.

  • Digital display for accurate readings
  • Audible alarm when target torque IS reached
  • Multiple units (Nm, ft-lb, in-lb)
  • Reversible ratcheting mechanism
Learn more
Service Procedures
Technical Service Bulletins

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The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
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Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

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