Audi Vehicle Models Audi A5 2007-2016 Torque Specifications
Audi Vehicle Models Audi A5 2007-2016

Audi Vehicle Models Audi A5 2007-2016 Torque Specifications

Complete Audi Vehicle Models Audi A5 2007-2016 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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Torque Calculator

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2.0l Engine

Torque specifications for 2.0L Engine

Cylinder Head and Valve Train

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
2

Valve Cover Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
3

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

Engine Block and Bearings

1

Main Bearing Bolts

M14 x 2.0
Torque Specification
44 ft-lbs (60 N·m)
2

Connecting Rod Nuts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)

Timing and Accessory Components

1

Timing Belt/Chain Tensioner Bolt

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2

Water Pump Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)

Engine Mounting and Transmission

1

Engine Mounting Bolts

M14 x 2.0
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
2

Engine Block to Transmission Bellhousing Bolts

M12 x 1.75
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

Fuel and Ignition Systems

1

Fuel Rail Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
2

Ignition Coil Bolt

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)

Oil and Cooling Systems

1

Oil Pan Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2

Thermostat Housing Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)

3.2l Engine

Torque specifications for 3.2L Engine

3.2l Engine Cylinder Head

1

Cylinder Head Bolts

M12 x 1.75
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten in multiple stages following the manufacturer's torque sequence. Always use new bolts when reassembling.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to prevent leaks. Do not overtighten.
3

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten evenly to ensure proper valve train operation.
4

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten in a sequence from the center outwards to prevent leaks.

3.2l Engine Block

1

Main Bearing Bolts

M10 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Tighten in the correct sequence to ensure proper crankshaft alignment. Always use new bolts or studs if specified.
2

Oil Pan Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to prevent leaks. Do not overtighten. Use new gasket or sealant as needed.
3

Oil Filter Housing Bolt

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure O-ring is correctly seated to prevent leaks.
4

Water Pump Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to ensure proper sealing.
5

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to prevent coolant leaks. Use new gasket or O-ring.

3.2l Engine Connecting Rods

1

Connecting Rod Nuts

M9 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Tighten to the correct torque in a specific sequence to ensure proper bearing crush. Always use new rod nuts or bolts if specified.

3.2l Engine Intake System

1

Intake Manifold Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten evenly in a criss-cross pattern to ensure an airtight seal.
2

Throttle Body Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to prevent vacuum leaks.
3

EGR Valve Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten evenly to ensure proper sealing.

3.2l Engine Fuel System

1

Fuel Rail Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to ensure proper fuel rail mounting.
2

Fuel Injector Bolts

M5 x 0.8
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Tighten carefully to avoid damaging the injector. Use new O-rings or seals.
3

Fuel Injector Rail Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten to ensure secure mounting and prevent fuel leaks.

3.2l Engine Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure correct timing belt/chain tension before tightening.
2

Camshaft Sprocket Bolt

M10 x 1.5
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Ensure correct timing before final torque.

3.2l Engine Front End Accessories

1

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Specification
148 ft-lbs (200 N·m)
Important Notes
Ensure the pulley is properly seated before tightening. Use new bolt if specified.
2

Water Pump Pulley Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten evenly to ensure secure mounting.
3

Serpentine/Accessory Drive Belt Tensioner Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the tensioner is correctly positioned before tightening.
4

Drive Belt Idler Pulley Bolt

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure the pulley is correctly aligned before tightening.
5

Power Steering Pump Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten evenly to ensure secure mounting.
6

Alternator Mounting Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Tighten evenly to ensure secure mounting.
7

A/C Compressor Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten evenly to ensure secure mounting.

3.2l Engine Sensors

1

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten carefully to avoid damaging the sensor.
2

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten carefully to avoid damaging the sensor.
3

Knock Sensor Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the sensor is properly seated for accurate readings.
4

Oil Pressure Sensor/Switch

M10 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten carefully to avoid damaging the sensor.
5

Coolant Temperature Sensor

M10 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the sensor is properly seated to avoid coolant leaks.

3.2l Engine Vvt Pcv

1

Variable Valve Timing Solenoid/Actuator Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten evenly to avoid leaks. Ensure proper mounting of the solenoid.
2

PCV Valve Bolts (If Applicable)

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten to prevent vacuum leaks.

3.2l Engine Misc

1

Oil Drain Plug Bolt

M14 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Use a new crush washer to ensure proper sealing to prevent oil leaks.
2

Spark Plugs

M14 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Do not overtighten. Use anti-seize on spark plug threads, if needed.
3

Flywheel Bolts

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Tighten in a criss-cross pattern to ensure proper seating.

Al551 Transmission

Torque specifications for Al551 Transmission

Al551 Transmission Housing

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
These bolts secure the transmission to the vehicle frame or subframe. Ensure proper alignment before tightening.
2

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten the oil pan bolts in a cross pattern to ensure even sealing. A new gasket is recommended for proper sealing.
3

Transmission Fluid Drain Plug

M18 x 1.5
Torque Specification
29 ft-lbs (40 N·m)
Important Notes
Always use a new crush washer for the drain plug to ensure a proper seal and prevent leaks.
4

Transmission Fluid Fill Plug

M18 x 1.5
Torque Specification
29 ft-lbs (40 N·m)
Important Notes
Always use a new crush washer for the fill plug to ensure a proper seal and prevent leaks.
5

Transmission Output Flange Bolt

M10 x 1.25
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Ensure the output flange is correctly aligned before tightening. These bolts secure the flange to the transmission case.

Al551 Mechatronic Unit

1

Mechatronic Unit Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (12 N·m)
Important Notes
Tighten in a cross pattern to ensure even pressure and proper sealing of the mechatronic unit to the transmission valve body.
2

Transmission Valve Body Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (12 N·m)
Important Notes
Tighten the valve body bolts in a cross pattern to ensure even pressure and proper sealing to the transmission case.

Al551 Driveline

1

Drive Axle/Half Shaft Bolts

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
These bolts secure the inner CV joint to the transmission output flange. Ensure proper alignment before tightening.
2

Torque Converter Bolts

M10 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m) 2. 33 ft-lbs (45 N·m)
Important Notes
Tighten the torque converter bolts in a star pattern in multiple steps to ensure even pressure and prevent damage.

Al551 Cooling

1

Transmission Cooler Line Banjo Bolts

M14 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Use new crush washers on both sides of the banjo fitting to ensure a proper seal. These bolts connect the transmission oil cooler lines to the transmission housing.

Body

Torque specifications for Body

Body Exterior

1

Fender Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value. Ensure proper alignment before final tightening.
2

Bumper Cover Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure proper alignment before final tightening. These are often plastic and can be easily stripped.
3

Headlight Mounting Bolts

M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
These are often small plastic bolts that require very low torque. Do not overtighten.
4

Taillight Mounting Bolts

M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
These are often small plastic bolts that require very low torque. Do not overtighten.

Body Closures

1

Door Hinge Bolts to Body

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Check specific bolt size. Ensure proper door alignment before final tightening.
2

Door Latch/Striker Bolts to Body

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Check specific bolt size. Ensure the door closes and latches properly after tightening.
3

Hood Hinge Bolts to Body

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Check specific bolt size. Ensure proper hood alignment before final tightening.
4

Trunk/Hatch Hinge Bolts to Body

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Check specific bolt size. Ensure the trunk/hatch operates smoothly after tightening.

Body Mounting

1

Fuel Tank Strap Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Proper torque is crucial for secure fuel tank mounting. Ensure bolts are in good condition.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Ensure a proper seal after installation, check for leaks.
3

Seat Mounting Bolts

M10 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure proper seat alignment and movement after tightening.
4

Dash/Instrument Panel Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure proper fit and alignment of dash panel after installation.

Brakes

Torque specifications for Brakes

Brakes Caliper

1

Brake Caliper Bolts

M12 x 1.75
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
These bolts secure the brake caliper to the mounting bracket. Ensure proper thread engagement before tightening. Check caliper movement after installation. *Note: This bolt size is an estimate and may vary.*
2

Brake Caliper Bleeder Screw

M10 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten the bleeder screw to the specified torque to prevent leaks and ensure proper operation. If the bleeder is aluminum, reduce torque to 5 ft-lbs (7 Nm). Do not overtighten.
3

Brake Hose Banjo Bolt

M10 x 1.0
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
This bolt secures the brake hose to the caliper. Use new sealing washers, do not over tighten as damage to the banjo bolt or caliper can occur. Ensure proper seating and fluid tightness.
4

Brake Pad Guide Pin Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
These bolts secure the brake pad guide pins to the caliper bracket. Correct torque is crucial for proper pad movement. Do not overtighten. *Note: This bolt size is an estimate and may vary.*

Brakes Mounting Bracket

1

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
96 ft-lbs (130 N·m)
Important Notes
These bolts attach the caliper mounting bracket to the steering knuckle. Ensure proper alignment and thread engagement. *Note: This bolt size is an estimate and may vary.*

Brakes Rotor

1

Brake Disc/Drum Retaining Bolts

M8 x 1.25
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
These bolts secure the brake disc/drum to the hub. Tighten to specified torque to ensure rotor or drum is flush with the hub. *Note: This bolt size is an estimate and may vary.*

Abs System

1

ABS Sensor Mounting Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
These bolts secure the ABS sensor to the hub. Do not overtighten as sensor and mounting point can be damaged. *Note: This bolt size is an estimate and may vary. Value is a general suggestion.*

Drivetrain

Torque specifications for Drivetrain

Drivetrain Flywheel Flexplate

1

Flywheel Bolts

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Tighten in a star pattern. Ensure flywheel mating surface is clean.
2

Flex Plate/Drive Plate Bolts

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Tighten in a star pattern. Ensure flex plate mating surface is clean.

Drivetrain Transmission

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure transmission is properly aligned before tightening. Tighten evenly.
2

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern. Do not overtighten, use a new gasket or sealant if required.
3

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
29 ft-lbs (40 N·m)
Important Notes
Use a new sealing washer if equipped. Do not overtighten.

Drivetrain Clutch

1

Clutch Pressure Plate Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Tighten in a star pattern. Ensure correct alignment of the pressure plate to the flywheel.
2

Clutch Disc Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten evenly, if applicable. Not all applications will have bolts securing the clutch disc to the flywheel.

Drivetrain Axles

1

Drive Axle/Half Shaft Bolts

M10 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Tighten evenly. Ensure the flange is seated correctly.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
148 ft-lbs (200 N·m)
Important Notes
Use a new nut if specified. Ensure proper axle engagement and seating in the hub. This nut may require a specific angle after initial torque.

Drivetrain Driveshaft

1

Propeller/Drive Shaft Bolts

M10 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Tighten evenly. Ensure proper driveshaft alignment and phase.

Drivetrain Differential

1

Differential Mounting Bolts

M12 x 1.75
Torque Specification
66 ft-lbs (90 N·m)
Important Notes
Ensure differential is aligned correctly. Tighten evenly.
2

Differential Drain/Fill Plug

M18 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Use a new sealing washer if equipped. Do not overtighten.

Drivetrain Transfercase

1

Transfer Case Drain/Fill Plug

M18 x 1.5
Torque Specification
29 ft-lbs (40 N·m)
Important Notes
Use a new sealing washer if equipped. Do not overtighten.

Drivetrain Starter

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure starter is properly aligned to the flywheel or flexplate. Tighten evenly.

Electrical

Torque specifications for Electrical

3.0l Engine Ignition

1

Ignition Coil Mounting Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure coil is properly seated before tightening. Overtightening may damage plastic housing.

3.0l Engine Starting System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure proper starter alignment with flywheel/flexplate before tightening. Use a thread locking compound to prevent loosening from vibrations.

3.0l Engine Charging System

1

Alternator Mounting Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Check belt tension after installation. Ensure proper alignment of alternator before tightening bolts.

Vehicle Electrical System

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Do not overtighten. Use proper terminal cleaner and dielectric grease. Ensure terminals are clean and free of corrosion.
2

Engine Control Unit (ECU) Mounting Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the ECU is properly aligned and seated. Overtightening can damage the sensitive ECU housing.
3

Ground Strap/Wire Terminal Bolts (Various Locations)

M6 x 1.0 (estimated)
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Torque value varies based on the bolt size and specific location. Range is 7-18 ft-lbs (10-25 N·m). This value is an estimate for a standard M6 bolt. Ensure clean contact surface for proper grounding.
4

Sensor Mounting Bolts (Various Locations)

M5 x 0.8 (estimated)
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque value varies based on the specific sensor and location. Range is 7-10 ft-lbs (10-14 Nm). This value is an estimate for a standard M5 bolt. Be careful not to damage plastic sensor housings.
5

Fuse Box/Relay Box Mounting Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure proper alignment before tightening. Avoid overtightening plastic housings.
6

Headlight Mounting Bolts

M5 x 0.8 (estimated)
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Torque spec range is 5-7 ft-lbs (7-10Nm). This value is an estimate. Ensure headlight is aligned properly before tightening. Overtightening can damage plastic housing.
7

Taillight Mounting Bolts

M5 x 0.8 (estimated)
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Torque spec range is 5-7 ft-lbs (7-10Nm). This value is an estimate. Ensure proper fitment before tightening. Do not overtighten the plastic housing.

Emissions Sensors

Torque specifications for Emissions_sensors

3.0l Engine Cylinder Head

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure mating surfaces are clean and free of debris. Always use new gaskets or seals when installing exhaust components to ensure a proper seal.

3.0l Intake Manifold

1

EGR Valve Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Always use a new gasket or seal. Tighten bolts evenly to prevent leaks. Ensure the EGR valve is properly aligned before torquing the bolts.
2

Manifold Absolute Pressure (MAP) Sensor Mounting Bolt

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated torque based on similar small sensor mounting bolts. Be very careful not to over tighten, use a low-range torque wrench for accuracy. Ensure the sensor O-ring or gasket is in good condition or replace it.

3.0l Air Intake System

1

Mass Airflow (MAF) Sensor Mounting Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated torque based on similar sensor mounting bolts. Use caution not to overtighten and damage the MAF sensor or the intake housing. Ensure the sensor is properly aligned with its gasket or o-ring in good condition.

3.0l Exhaust System

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Always use new gaskets or seals. Ensure the pipes are properly aligned. Tighten evenly to prevent leaks.
2

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Always use new gaskets and ensure correct alignment. Tighten bolts evenly for a leak-free seal. Ensure the gasket is properly seated.
3

Muffler to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure proper alignment of the muffler to exhaust pipe. Replace any worn gaskets or seals before installation. Use the appropriate flange hardware for the exhaust connection.
4

Oxygen (O2) Sensor Mounting (Standard Sensor)

M12 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value for standard O2 sensor with M12 threads. Use anti-seize on threads. Always use a new sensor gasket or sealing washer.
5

Oxygen (O2) Sensor Mounting (Wideband Sensor)

M18 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated value for wideband O2 sensor with M18 threads. Use anti-seize on the threads. Always use a new sensor gasket or sealing washer.
6

Exhaust Gas Temperature (EGT) Sensor Mounting Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated torque. Ensure the sensor is aligned correctly with its mounting bung or flange. Always use a new seal or gasket when installing a new EGT sensor to prevent leaks.
7

NOx Sensor Mounting Bolt

M18 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated torque. This can vary based on the specific sensor and manufacturer. Always use a new sealing washer or gasket. Always confirm the sensor is aligned properly with its mounting location.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure and avoid leaks. Use new gasket when installing.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure proper alignment of exhaust pipe and manifold before tightening. Use new gasket.

Exhaust System

1

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure proper alignment of components. Use new gaskets.
2

Muffler to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure proper alignment of components. Use new hardware if necessary.
3

Exhaust Flange Bolts/Nuts (between pipes)

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure proper alignment of flanges and use new gaskets. May vary depending on bolt size.

Exhaust Mounting

1

Exhaust Hanger Bracket Bolts (to Body/Frame)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
These bolts secure the exhaust system hangers to the vehicle's chassis or frame.

Exhaust Sensors

1

O2 Sensor (Oxygen Sensor)

M18 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Do not over-tighten. Apply anti-seize to threads. Ensure sensor is properly aligned.

Fuel

Torque specifications for Fuel

Fuel Delivery System

1

Fuel Rail Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Secures the fuel rail to the intake manifold or cylinder head.
2

Fuel Injector Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Secures the fuel injector to the intake manifold or cylinder head. This ensures proper sealing of the injector in its bore.
3

Fuel Injector Rail (to Injector) Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Secures the fuel injectors to the fuel rail itself. This ensures proper sealing of the injector in its rail bore.
4

Fuel Pressure Sensor Mounting Bolt

M5 x 0.8
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Secures the fuel pressure sensor to the fuel rail or pump housing. Estimated value, confirm with service manual.
5

High-Pressure Fuel Pump Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the high-pressure fuel pump to the engine. Estimated value, confirm with service manual.

Fuel Tank System

1

Fuel Pump Mounting Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the fuel pump assembly to the fuel tank or chassis.
2

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the fuel tank straps to the vehicle underbody.
3

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Secures the fuel filler neck to the vehicle body.
4

Fuel Filter Mounting Bolts/Nuts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the fuel filter housing or bracket. May include fuel line fitting torque.

Fuel Line System

1

Fuel Line Fittings

Varies, typical M10 x 1.0 or M12 x 1.5 banjo or compression
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Torque specification is an estimate and depends on the specific fitting type and size, always confirm with a service manual. Includes banjo bolts, compression fittings, etc.

Hvac

Torque specifications for Hvac

Hvac Ac Compressor

1

A/C Compressor Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure compressor is properly aligned before tightening. Use a criss-cross pattern to evenly distribute pressure.
2

A/C Line Fittings

Fitting specific - varies
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure proper alignment of the fittings. Do not over tighten.

Hvac Ac Condenser

1

A/C Condenser Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value. Ensure proper alignment of condenser before tightening. Do not over-tighten. These bolts are typically small.

Hvac Ac Receiver Drier

1

A/C Receiver Drier Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value. Ensure proper alignment before tightening. Do not over-tighten. These bolts are typically small.

Hvac Blower Motor

1

HVAC Blower Motor Mounting Screws/Bolts

M5 x 0.8 self-tapping
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Estimated value. Typically screws into plastic, do not over-tighten. Use hand tools for final torque.

Hvac Control Panel

1

HVAC Control Panel Mounting Screws/Bolts

M4 x 0.7 self-tapping
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Estimated value. Typically screws into plastic, do not over-tighten. Use hand tools for final torque.

Hvac Actuators

1

HVAC Blend Door Actuator Mounting Screws/Bolts

M4 x 0.7 self-tapping
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Estimated value. Typically screws into plastic, do not over-tighten. Use hand tools for final torque.
2

HVAC Mode Door Actuator Mounting Screws/Bolts

M4 x 0.7 self-tapping
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Estimated value. Typically screws into plastic, do not over-tighten. Use hand tools for final torque.

Skyactiv Drive Transmission

Torque specifications for Skyactiv Drive Transmission

Skyactiv Drive Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure proper transmission alignment before tightening.
2

Bellhousing Bolts (Engine to Transmission) - M10

M10 x 1.5
Torque Specification
50 ft-lbs (70 N·m)
Important Notes
Tighten in a cross pattern. Estimated values based on typical torque for M10 bolts.
3

Bellhousing Bolts (Engine to Transmission) - M8

M8 x 1.25
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Tighten in a cross pattern. Estimated values based on typical torque for M8 bolts.

Skyactiv Drive Transmission Case

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a cross pattern to ensure even sealing.
2

Transmission Case Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Tighten in a cross pattern. Estimated values based on typical torque for M8 bolts.

Skyactiv Drive Transmission Internal

1

Torque Converter Bolts (Flywheel to Torque Converter)

M8 x 1.25
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Tighten in a cross pattern to avoid imbalance. Estimated values based on typical torque for M8 bolts.
2

Valve Body Mounting Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (13 N·m)
Important Notes
Tighten in a cross pattern to prevent warping. Estimated values based on typical torque for M6 bolts.
3

Transmission Solenoid Retaining Bolts

M5 x 0.8
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Do not overtighten, small bolts, lower torque value.

Skyactiv Drive Transmission External

1

Drive Axle/Half Shaft Bolts

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure proper seating of the axle before tightening.
2

Output Shaft Flange Bolts

M10 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Estimated value.
3

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
29 ft-lbs (40 N·m)
Important Notes
Use a new sealing washer when installing.

Suspension

Torque specifications for Suspension

Front Suspension

1

Strut/Shock Absorber Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Tighten to specified torque. Ensure proper alignment of strut before tightening.
2

Front Wheel Bearing Housing/Steering Knuckle to Strut Bolts

M12 x 1.5
Torque Specification
1. 44 ft-lbs (60 N·m) 2. 90°
Important Notes
These bolts are torque-to-yield (TTY). Always use new bolts. Tighten to the specified torque, then rotate an additional 90 degrees.
3

Lower Control Arm Ball Joint Pinch Bolt

M10 x 1.25
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure the control arm is correctly seated around the ball joint before tightening.
4

Control Arm Bolts

M14 x 1.5
Torque Specification
89 ft-lbs (120 N·m)
Important Notes
Tighten to specified torque. Ensure control arm is properly aligned before tightening.
5

Ball Joint Nut

M12 x 1.25
Torque Specification
66 ft-lbs (90 N·m)
Important Notes
Ensure the ball joint stud is correctly seated before tightening. Do not over-tighten.
6

Tie Rod End Nut

M12 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the tie rod end is correctly seated before tightening.
7

Sway Bar Link Nut

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the sway bar link is correctly seated before tightening.
8

Damper Rod Nut (Top of Strut/Shock)

M14 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Tighten the nut to the specified torque. This nut secures the strut piston to the top strut mount.

Rear Suspension

1

Rear Wheel Bearing Housing to Trailing Arm Bolts

M12 x 1.5
Torque Specification
1. 70 ft-lbs (95 N·m) 2. 90°
Important Notes
These bolts are torque-to-yield (TTY). Always use new bolts. Tighten to the specified torque, then rotate an additional 90 degrees.

Sway Bar

1

Sway Bar Bushing Bracket Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the sway bar and bushings are correctly aligned before tightening.

Steering System

1

Steering Gear/Rack Bolts

M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Tighten to specified torque. Ensure proper alignment of the steering rack before tightening.

Subframe

1

Subframe Mounting Bolts

M14 x 1.5
Torque Specification
1. 70 ft-lbs (95 N·m) 2. 90°
Important Notes
These bolts are torque-to-yield (TTY). Always use new bolts. Tighten to the specified torque, then rotate an additional 90 degrees.

Wheel Components

1

Wheel Lug Nuts

M14 x 1.5
Torque Specification
89 ft-lbs (120 N·m)
Important Notes
Tighten wheel lug nuts in a star pattern to ensure even pressure. Do not over-tighten.

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 2007-2016 Audi A5?

The recommended torque range for the lug nuts on a 2007-2016 Audi A5 IS 88-108 ft-lbs (119-146 Nm). Refer to manufacturer specifications for precise values.

Q2

What size torque wrench should I use for the cylinder head bolts on an Audi A5?

Use a torque wrench capable of applying torque in the range of 50-150 ft-lbs (68-203 Nm) for the cylinder head bolts on a 2007-2016 Audi A5.

Q3

What IS the proper tightening sequence for the intake manifold bolts on an Audi A5?

Follow the tightening sequence specified by the manufacturer. Typically, it involves tightening the bolts in a star pattern, gradually increasing the torque in multiple steps.

Q4

Can I use a regular socket wrench to tighten bolts on my Audi A5?

No. It IS highly recommended to use a torque wrench for accurate and controlled tightening of bolts. A regular socket wrench can over-tighten or under-tighten bolts, leading to potential issues.

Q5

What IS the recommended torque for the oil drain plug on an Audi A5?

The recommended torque for the oil drain plug on a 2007-2016 Audi A5 IS 30-36 ft-lbs (41-49 Nm). Ensure the sealing washer IS replaced with a new one.

Q6

How often should I check the torque on the wheel lug nuts?

It IS advisable to check the torque on the wheel lug nuts every 5,000-10,000 miles (8,000-16,000 km) or after any tire-related work, such as a tire change or rotation.

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
Service Procedures

Engine Bolt Torque Specifications

Technical procedure overview for engine bolt torque specifications on the Audi A5

  • Cylinder head bolts: 40 Nm + 90° + 90°
  • Camshaft bolts: 20 Nm + 90°
  • Crankshaft pulley bolt: 150 Nm + 90°
  • Oil pan bolts: 10 Nm
  • Intake manifold bolts: 25 Nm
View full procedure

Suspension Bolt Torque Specifications

Technical procedure overview for suspension bolt torque specifications on the Audi A5

  • Control arm bolts: 90 Nm + 90°
  • Ball joint bolts: 50 Nm + 90°
  • Tie rod end bolts: 60 Nm + 90°
  • Sway bar link bolts: 25 Nm
  • Strut bolts: 60 Nm + 90°
View full procedure

Brake Bolt Torque Specifications

Technical procedure overview for brake bolt torque specifications on the Audi A5

  • Caliper mounting bolts: 110 Nm
  • Rotor mounting bolts: 30 Nm
  • Brake pad mounting bolts: 25 Nm
  • Brake line bolts: 20 Nm
View full procedure
Technical Service Bulletins

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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.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
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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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