Audi Audi A5 2007-2016 2.0L Engine Bolt Torque Specifications
This page provides a comprehensive list of torque specifications for various bolts on the 2.0L engine found in the 2007-2016 Audi A5. Includes torque values for critical engine components.
Important Information
Safety guidelines and reference information for proper torque application
Safety First
- Always verify torque specifications with your vehicle's factory service manual
- Use properly calibrated torque wrenches
- Replace all torque-to-yield (TTY) bolts - they are single-use only
- When in doubt, consult a professional mechanic
Quick Reference Guide
Quick Reference Guide
Common Torque Patterns
Star Pattern
Used for wheels and other circular bolt patterns
Cross Pattern
Used for gaskets and cover plates
Sequential Pattern
Used for head bolts and other critical components
Common Mistakes to Avoid
Common Mistakes to Avoid
Over-tightening
Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.
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.
Follow the manufacturer's specified torque sequence pattern.
Dirty Threads
Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.
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.
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.
Check if specs are for dry or lubricated threads. Use specified lubricant when required.
Recommended Tools
Recommended Tools
Torque Wrench (1/4" Drive)
Torque Wrench (3/8" Drive)
Torque Wrench (1/2" Drive)
Angle Gauge
Torque Wrench Care
- Calibrate annually or after 5,000 clicks
- Store at lowest setting
- Keep clean and lubricated
Search Specifications
Search by component name, bolt size, or description
Torque Calculator
Convert between different torque units
Cylinder head and valve train
Components that make up the cylinder head and valve train, including cylinder head bolts, valve cover bolts, and rocker arm/shaft bolts.
1 Cylinder Head Bolts
M12 x 1.5
Cylinder Head Bolts
M12 x 1.5Torque Value
2 Valve Cover Bolts
M8 x 1.25
Valve Cover Bolts
M8 x 1.25Torque Value
3 Rocker Arms/Shafts Bolts
M10 x 1.5
Rocker Arms/Shafts Bolts
M10 x 1.5Torque Value
Engine block and bearings
Components that make up the engine block and bearings, including main bearing bolts and connecting rod nuts.
1 Main Bearing Bolts
M14 x 2.0
Main Bearing Bolts
M14 x 2.0Torque Value
2 Connecting Rod Nuts
M12 x 1.75
Connecting Rod Nuts
M12 x 1.75Torque Value
Timing and accessory components
Components that make up the timing and accessory systems, including timing belt/chain tensioner bolts and water pump bolts.
1 Timing Belt/Chain Tensioner Bolt
M10 x 1.5
Timing Belt/Chain Tensioner Bolt
M10 x 1.5Torque Value
2 Water Pump Bolts
M8 x 1.25
Water Pump Bolts
M8 x 1.25Torque Value
Engine mounting and transmission
Components that make up the engine mounting and transmission systems, including engine mounting bolts and engine block to transmission bellhousing bolts.
1 Engine Mounting Bolts
M14 x 2.0
Engine Mounting Bolts
M14 x 2.0Torque Value
Important Notes
2 Engine Block to Transmission Bellhousing Bolts
M12 x 1.75
Engine Block to Transmission Bellhousing Bolts
M12 x 1.75Torque Value
Important Notes
Fuel and ignition systems
Components that make up the fuel and ignition systems, including fuel rail bolts and ignition coil bolts.
1 Fuel Rail Bolts
M8 x 1.25
Fuel Rail Bolts
M8 x 1.25Torque Value
2 Ignition Coil Bolt
M8 x 1.25
Ignition Coil Bolt
M8 x 1.25Torque Value
Oil and cooling systems
Components that make up the oil and cooling systems, including oil pan bolts and thermostat housing bolts.
1 Oil Pan Bolts
M10 x 1.5
Oil Pan Bolts
M10 x 1.5Torque Value
2 Thermostat Housing Bolts
M8 x 1.25
Thermostat Housing Bolts
M8 x 1.25Torque Value
Troubleshooting Guide
Common issues, diagnostic steps, and prevention guidelines
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
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
Diagnostic Steps
Visual inspection, torque verification, thread assessment
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
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
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
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 Why are torque specifications important when working on my Audi A5's 2.0L engine?
Why are torque specifications important when working on my Audi A5's 2.0L engine?
Correct torque is crucial for proper sealing and component function. Under-tightening can lead to leaks or loosening, while over-tightening can damage threads, gaskets, or the components themselves. For example, incorrect cylinder head bolt torque can cause head gasket failure and engine damage.
Q2 What happens if I don't have a torque wrench?
What happens if I don't have a torque wrench?
While a torque wrench is highly recommended, using a 'feel' method can be risky. Without a precise tool, it's easy to over-tighten or under-tighten bolts. If you do not have one, it is best to borrow one, or seek professional assistance.
Q3 Do torque specifications vary for new vs. used bolts?
Do torque specifications vary for new vs. used bolts?
Generally, torque specifications are based on the bolt's material, diameter, and thread pitch, and should be followed regardless of age. If a bolt is a torque-to-yield (TTY) bolt, they are specifically meant to be replaced when removed, not reused.
Q4 Should I lubricate the bolt threads before applying torque?
Should I lubricate the bolt threads before applying torque?
Yes, unless stated otherwise, light oil is acceptable. However, if the specification notes a specific lube or dry torque, that must be followed as the torque is set with that condition in mind.
Q5 Can I reuse torque-to-yield (TTY) bolts?
Can I reuse torque-to-yield (TTY) bolts?
Absolutely not. TTY bolts are designed to stretch upon initial use. Reusing them will lead to inconsistent clamping force and potential failure. Examples of TTY bolts are the cylinder head bolts. If removed, they must be replaced.
Environmental Considerations
Temperature, humidity, and seasonal effects on torque specifications
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
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
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
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
Torque Wrench (1/2-inch drive)
A calibrated torque wrench is essential for accurately tightening bolts to specified torque values. A 1/2-inch drive is common for larger engine components.
- Click-type or digital torque indication
- Calibrated for accuracy
Torque Wrench (3/8-inch drive)
A 3/8-inch drive torque wrench is useful for smaller bolts and fasteners on the engine.
- Click-type or digital torque indication
- Calibrated for accuracy
Socket Set (Metric)
A comprehensive set of metric sockets in various sizes will be needed to match the bolt head sizes on the engine.
- Standard and deep sockets
- Various sizes from 8mm - 24mm
Torx Socket Set
A set of Torx sockets are necessary for torquing some components on the engine.
- Various sizes from T20 to T60
- Standard length sockets
Extension Bars (Various Lengths)
Extension bars provide added reach and access for bolts in tight locations.
- 1/2-inch and 3/8-inch drive options
- Various lengths
Service Procedures
Cylinder Head Bolt Torque Procedure (2.0L TFSI)
This procedure outlines the proper tightening sequence and torque specifications for the cylinder head bolts.
- Clean all bolt threads and ensure no debris is present.
- Apply a small amount of new engine oil to bolt threads and under the bolt head.
- Install all cylinder head bolts by hand.
- Tighten all bolts in the specified sequence (refer to the service manual) to the first stage torque value.
- Tighten all bolts in the specified sequence to the second stage torque value.
- Angle tighten each bolt in the specified sequence by the specified angle.
- Verify all bolts are tightened to the correct specification.
Connecting Rod Bolt Torque Procedure (2.0L TFSI)
This procedure outlines the proper tightening sequence and torque specifications for the connecting rod bolts.
- Clean all bolt threads and ensure no debris is present.
- Apply a small amount of new engine oil to bolt threads and under the bolt head.
- Install all connecting rod bolts by hand.
- Tighten all bolts in the specified sequence (refer to the service manual) to the first stage torque value.
- Angle tighten each bolt in the specified sequence by the specified angle.
- Verify all bolts are tightened to the correct specification.
Crankshaft Main Bearing Cap Torque Procedure (2.0L TFSI)
This procedure outlines the proper tightening sequence and torque specifications for the crankshaft main bearing cap bolts.
- Clean all bolt threads and ensure no debris is present.
- Apply a small amount of new engine oil to bolt threads and under the bolt head.
- Install all main bearing cap bolts by hand.
- Tighten all bolts in the specified sequence (refer to the service manual) to the first stage torque value.
- Tighten all bolts in the specified sequence to the second stage torque value.
- Angle tighten each bolt in the specified sequence by the specified angle.
- Verify all bolts are tightened to the correct specification.
Technical Service Bulletins
Revised Cylinder Head Bolt Torque Sequence for 2.0L TFSI
2012-05-15A revised torque sequence for the cylinder head bolts has been issued due to instances of gasket failure and improper sealing.
Resolution: Use the new torque sequence as specified in TSB 2012-05-15, including a revised initial torque value and final angle tightening procedure.
Connecting Rod Bolt Stretching Issue
2014-02-28Some connecting rod bolts have been found to stretch beyond specification during tightening. Always replace connecting rod bolts during disassembly and assembly.
Resolution: Always replace the connecting rod bolts with new bolts. Follow the proper tightening sequence and torque angle to spec. Do not re-use old bolts.
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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.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.