Acura TSX 2004-2008 Drivetrain Bolt Torque Specifications & Fastener Values
Acura TSX 2004-2008

Acura TSX 2004-2008 Drivetrain Bolt Torque Specifications

Comprehensive list of torque specifications for drivetrain bolts on the 2004-2008 Acura TSX, including transmission, axles, and differential components.

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

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

Engine Flywheel And Clutch

Torque specifications for the flywheel and clutch assembly.

1

Flywheel Bolts

M12 x 1.25
Torque Value
94 ft-lbs (127 N·m)
Important Notes
Torque bolts in a star pattern to ensure even clamping.
2

Clutch Pressure Plate Bolts

M8 x 1.25
Torque Value
19 ft-lbs (26 N·m)
Important Notes
Torque bolts in a star pattern to ensure even clamping.
3

Clutch Disc/Center Bolt

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensure clutch disc is properly aligned before tightening.

Transmission

Torque specifications for transmission components.

1

Transmission Mounting Bolts

M12 x 1.75
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Ensure proper alignment before torquing.
2

Transmission Bellhousing Bolts (To Engine Block)

M10 x 1.5
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Ensure proper alignment before torquing.
3

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Torque bolts in a cross pattern to ensure even clamping and prevent leaks.
4

Transmission Fluid Drain and Fill Plugs

M18 x 1.5
Torque Value
36 ft-lbs (49 N·m)
Important Notes
Use new sealing washers for proper sealing.

Drive Axles And Shafts

Torque specifications for drive axles, CV joints, and propeller shafts.

1

Drive Axle/Half Shaft Bolts

M10 x 1.5
Torque Value
47 ft-lbs (64 N·m)
Important Notes
Tighten evenly to ensure secure connection.
2

CV Joint/Axle Nut

M22 x 1.5
Torque Value
181 ft-lbs (245 N·m)
Important Notes
Ensure the nut is tightened to the proper specification for proper wheel bearing preload.
3

Propeller/Drive Shaft Bolts

M10 x 1.5
Torque Value
47 ft-lbs (64 N·m)
Important Notes
Tighten evenly to ensure secure connection and prevent vibration.

Differential And Transfer Case

Torque specifications for differential and transfer case components.

1

Differential Drain/Fill Plug

M18 x 1.5
Torque Value
33 ft-lbs (44 N·m)
Important Notes
Use new sealing washers for proper sealing.
2

Transfer Case Drain/Fill Plug

M18 x 1.5
Torque Value
33 ft-lbs (44 N·m)
Important Notes
Use new sealing washers for proper sealing.
3

Differential Case Bolts

M10 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Tighten evenly to ensure proper case sealing.
4

Front Differential/Case Mounting Bolts (AWD Model)

M12 x 1.75
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Tighten evenly to ensure proper alignment and reduce vibration.
5

Rear Differential Mounting Bolts (RWD/AWD Model)

M12 x 1.75
Torque Value
35 ft-lbs (47 N·m)
Important Notes
Tighten evenly to ensure proper alignment and reduce vibration.

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

Why is using the correct torque specification important for drivetrain bolts?

Using the correct torque specification ensures proper clamping force, preventing bolts from loosening due to vibration or thermal expansion. Under-torquing can lead to components coming loose, while over-torquing can damage threads, stretch bolts beyond their yield point, and cause premature failure. For example, improperly torqued driveshaft bolts could cause severe vibration or even component separation during driving.

Q2

What happens if I don't have a torque wrench?

While a torque wrench is highly recommended for accurate tightening, you should NOT rely on 'feel.' Improper torque can lead to major issues. It's best to borrow or rent one. However, if that's absolutely not possible, and you are experienced, err on the side of under-tightening rather than over-tightening and recheck later with a proper torque wrench. This is a risk and should only be used as an emergency and temporary measure.

Q3

Should I replace drivetrain bolts when performing maintenance?

It's generally recommended to replace torque-to-yield (TTY) bolts, especially those used in critical areas like the flywheel or pressure plate. TTY bolts stretch during tightening and should not be reused. If a bolt shows any signs of damage or corrosion, replacement is always a good idea for safety and reliability. Consider replacing any bolt that has been removed multiple times, regardless of its design.

Q4

Do I need to use thread locker on drivetrain bolts?

Thread locker, such as Loctite, is often recommended on specific drivetrain bolts, particularly those subject to vibration and high stress, such as driveshaft bolts, and some transmission or differential housing bolts. Always refer to the factory service manual for specific recommendations regarding which bolts and if medium or high strength is necessary. Applying thread locker incorrectly can hinder bolt removal later, so adherence to the manufacturer's specifications is critical. Always clean bolts and threads before application.

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

Torque Wrench

A calibrated torque wrench is essential for accurately tightening bolts to specification. Both click-type and dial-type wrenches are acceptable.

  • Accurate torque application
  • Various torque ranges available
Learn more

Socket Set

A comprehensive socket set with various sizes is necessary to fit different bolt heads used throughout the drivetrain.

  • Multiple drive sizes (e.g., 1/4", 3/8", 1/2")
  • Metric sizing
Learn more

Extension Bars

Extension bars help reach recessed or hard-to-access bolts.

  • Various lengths
  • Secure socket connection
Learn more

Universal Joint

A universal joint allows for angled socket positioning when a straight extension will not work.

  • Flexible joint
  • Secure socket connection
Learn more

Breaker Bar

A breaker bar is used to loosen stubborn bolts before using the torque wrench to tighten them.

  • High leverage
  • Durable construction
Learn more
Service Procedures

Manual Transmission Drain Plug Torque

Procedure for torquing the manual transmission drain plug during a fluid change.

  • Locate the transmission drain plug.
  • Using the correct socket, loosen and remove the drain plug.
  • Clean the drain plug and install a new crush washer or sealing washer.
  • Hand tighten the drain plug.
  • Using a torque wrench, tighten the drain plug to the specified torque.
  • Verify torque with the torque wrench.
View full procedure

Manual Transmission Fill Plug Torque

Procedure for torquing the manual transmission fill plug during a fluid change.

  • Locate the transmission fill plug.
  • Using the correct socket, remove the fill plug.
  • Add the correct amount of transmission fluid.
  • Install the fill plug and tighten hand tight.
  • Using a torque wrench, tighten the fill plug to the specified torque.
  • Verify torque with the torque wrench.
View full procedure

Driveshaft Bolt Torque

Procedure for torquing the bolts connecting the driveshaft to the transmission and differential.

  • Locate the driveshaft bolts.
  • Using the correct socket, loosen and remove the bolts.
  • Inspect the bolts for damage, replace if needed.
  • Hand tighten the driveshaft bolts.
  • Using a torque wrench, tighten the driveshaft bolts to the specified torque.
  • Verify torque with the torque wrench.
View full procedure

Rear Differential Drain Plug Torque

Procedure for torquing the rear differential drain plug during a fluid change

  • Locate the rear differential drain plug.
  • Using the correct socket, loosen and remove the drain plug.
  • Clean the drain plug and install a new crush washer or sealing washer.
  • Hand tighten the drain plug.
  • Using a torque wrench, tighten the drain plug to the specified torque.
  • Verify torque with the torque wrench.
View full procedure

Rear Differential Fill Plug Torque

Procedure for torquing the rear differential fill plug during a fluid change.

  • Locate the rear differential fill plug.
  • Using the correct socket, remove the fill plug.
  • Add the correct amount of differential fluid.
  • Install the fill plug and tighten hand tight.
  • Using a torque wrench, tighten the fill plug to the specified torque.
  • Verify torque with the torque wrench.
View full procedure
Technical Service Bulletins

Potential for Loose Driveshaft Bolts

2006-05-15

Some 2004-2006 models may experience loosening driveshaft bolts over time. This can lead to drivetrain vibrations and premature wear.

2004-2006

Resolution: Inspect driveshaft bolts at regular service intervals and apply thread locker during reinstallation. Torque to the specified value.

Rear Differential Fluid Leak at Drain Plug

2007-11-20

A small number of vehicles have reported a slow leak from the rear differential drain plug. This is often due to a degraded crush washer.

2004-2008

Resolution: Always use a new crush washer or sealing washer and torque to the specified value during rear differential service.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

Automotive Technical Specialist

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  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
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