Acura RL 2005-2012 Suspension Bolt Torque Specifications & Fastener Values
Acura RL 2005-2012

Acura RL 2005-2012 Suspension Bolt Torque Specifications

Comprehensive guide to torque specifications for all suspension bolts on the 2005-2012 Acura RL, including front and rear suspension components. Includes upper and lower control arms, sway bar links, strut mounts, and hub bolts.

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

Front Suspension

Torque specifications for front suspension components.

1

Strut/Shock Absorber Mounting Bolts

M12 x 1.25
Torque Value
33 ft-lbs (45 N·m)
Important Notes
Secures the top and bottom of the strut/shock to the chassis and knuckle.
2

Front Upper Control Arm Mounting Bolts

M14 x 1.5
Torque Value
65 ft-lbs (88 N·m)
Important Notes
Connects the upper control arm to the vehicle frame.
3

Control Arm Bolts (Lower)

M14 x 1.5
Torque Value
43 ft-lbs (58 N·m)
Important Notes
Attaches the lower control arm to the frame/subframe and knuckle.
4

Ball Joint Nut

M12 x 1.25
Torque Value
40 ft-lbs (54 N·m)
Important Notes
Secures the ball joint to the control arm or steering knuckle.
5

Tie Rod End Nut

M12 x 1.25
Torque Value
36 ft-lbs (49 N·m)
Important Notes
Secures the tie rod end to the steering knuckle.
6

Sway Bar Link Nut

M10 x 1.25
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Attaches the sway bar links to the sway bar and strut.
7

Sway Bar Mounting Bracket Bolts

M8 x 1.25
Torque Value
22 ft-lbs (30 N·m)
Important Notes
Secures the sway bar bushings to the chassis.
8

Front Shock/Strut Assembly to Steering Knuckle Bolts/Nuts

M14 x 1.5
Torque Value
72 ft-lbs (98 N·m)
Important Notes
These bolts/nuts attach the bottom of the shock/strut to the steering knuckle.

Rear Suspension

Torque specifications for rear suspension components.

1

Rear Upper Control Arm Mounting Bolts

M14 x 1.5
Torque Value
65 ft-lbs (88 N·m)
Important Notes
Connects the rear upper control arm to the frame or subframe.
2

Rear Lower Control Arm Mounting Bolts

M14 x 1.5
Torque Value
65 ft-lbs (88 N·m)
Important Notes
Connects the rear lower control arm to the chassis.
3

Rear Trailing Arm Mounting Bolts

M14 x 1.5
Torque Value
65 ft-lbs (88 N·m)
Important Notes
Connects the trailing arm to the chassis.
4

Rear Shock Lower Mount Bolt

M12 x 1.25
Torque Value
47 ft-lbs (64 N·m)
Important Notes
Attaches the lower end of the shock absorber to the control arm or knuckle.
5

Rear Shock Upper Mount Bolts

M10 x 1.25
Torque Value
28 ft-lbs (38 N·m)
Important Notes
Secures the upper end of the shock absorber to the chassis.

Abs System

Torque specification for ABS wheel speed sensor.

1

Wheel Speed Sensor Bolt

M6 x 1.0
Torque Value
7 ft-lbs (10 N·m)
Important Notes
Secures the wheel speed sensor to the knuckle.

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 are torque specifications so important for suspension bolts?

Proper torque ensures the suspension components are securely fastened and operate correctly. Under-tightening can lead to loosening, noise, or component failure, while over-tightening can damage threads or stress components, potentially causing cracks or catastrophic failure. Using the correct torque specification is essential for safe and predictable handling.

Q2

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

While a torque wrench is the ideal tool, if you absolutely must work without one, 'hand-tight' is NOT sufficient. You risk under-tightening. A common and flawed 'rule of thumb' is the '1/4 turn after snug' method, but this is highly inaccurate and not recommended. It is safer to postpone the work until a torque wrench is available. Consider renting one from an auto parts store.

Q3

Should I use new bolts when working on my suspension?

It's highly recommended to use new bolts, especially for critical suspension components like control arms, strut mounts, and tie rods. Many of these bolts are 'torque-to-yield' designs and are meant to stretch slightly when tightened. Reusing such bolts can lead to improper clamping force and increase the likelihood of them failing later. Check your service manual for bolt replacement recommendations.

Q4

Are the torque specs the same for all suspension bolts on my 2005-2012 Acura RL?

No, torque specifications vary significantly between different suspension components. For example, the lower control arm bolt will have a different torque spec than the sway bar end link bolt. Always consult the correct service manual for your specific year and model of Acura RL to avoid any issues. Refer to the diagram and torque spec table to identify the correct values for your specific bolt.

Q5

Do I need to use thread locker?

The need for thread locker varies depending on the specific bolt and its location. Some suspension bolts are designed to be used with thread locker (like some of the caliper bolts), while others are not. The service manual will specify the requirements. Generally, thread locker is a good idea on bolts that are frequently exposed to vibration. Follow the specified type of thread locker. Common examples are medium strength (blue) or high strength (red) compounds.

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 (1/2 inch drive)

A calibrated torque wrench is essential for accurately tightening suspension bolts to the specified torque.

  • Adjustable torque range (typically 20-150 ft-lbs)
  • Clear torque scale
  • Click-type or digital readout
Learn more

Socket Set (Metric)

A comprehensive metric socket set is needed to fit the various bolt head sizes used in the suspension system.

  • Common sizes including 10mm, 12mm, 14mm, 17mm, 19mm, and 22mm.
  • 6-point sockets for secure grip
  • Deep sockets for access to recessed bolts.
Learn more

Torque Adapter (Crowfoot Wrench)

A crowfoot wrench is needed for applying torque to hard-to-reach fasteners.

  • Various Metric sizes for different fasteners
  • Designed for use with a torque wrench
  • Chrome or black oxide finish
Learn more

Extension Bars

Extension bars provide additional reach when working with deeply recessed bolts. Different lengths might be needed

  • Various lengths
  • 1/2 inch drive
  • Chrome Vanadium Steel Construction
Learn more
Service Procedures

Front Lower Control Arm Bolt Torque Procedure

This procedure outlines the steps to properly torque the lower control arm bolts on the front suspension.

  • Raise the vehicle and support it securely on jack stands.
  • Locate the front lower control arm bolts, referring to the service manual diagram if needed.
  • Using the appropriate sized socket and extension, hand-tighten the bolts.
  • Using the torque wrench, torque the bolts to the specified torque of 74 ft-lbs (100 Nm) for the front bolt.
  • Torque the rear bolt to 47 ft-lbs (63 Nm).
  • Double-check the torque values to ensure proper tightness.
View full procedure

Rear Upper Control Arm Bolt Torque Procedure

This procedure details the steps for torquing the upper control arm bolts in the rear suspension.

  • Raise and support the rear of the vehicle using jack stands.
  • Locate the rear upper control arm mounting bolts.
  • Hand-tighten all upper control arm bolts.
  • Using the torque wrench, torque the main bolts to 54 ft-lbs (73 Nm).
  • Torque the smaller bolts to 36 ft-lbs (49 Nm).
  • Re-check all bolts to confirm that the proper torque is achieved.
View full procedure

Front Shock Absorber Bolt Torque Procedure

This procedure details the steps for torquing the front shock absorber bolts.

  • Raise and support the front of the vehicle using jack stands.
  • Locate the front shock absorber mounting bolts.
  • Hand-tighten the shock absorber lower mounting bolt.
  • Using a torque wrench torque the nut to 74 ft-lbs (100 Nm)
  • Torque the two upper mount bolts to 23 ft-lbs (31 Nm).
  • Re-check all bolts to confirm that the proper torque is achieved.
View full procedure

Rear Shock Absorber Bolt Torque Procedure

This procedure details the steps for torquing the rear shock absorber bolts.

  • Raise and support the rear of the vehicle using jack stands.
  • Locate the rear shock absorber mounting bolts.
  • Hand-tighten the shock absorber lower mounting bolt.
  • Using a torque wrench torque the lower bolt to 47 ft-lbs (63 Nm)
  • Torque the two upper mounting bolts to 28 ft-lbs (38 Nm).
  • Re-check all bolts to confirm that the proper torque is achieved.
View full procedure
Technical Service Bulletins

Suspension Noise over Bumps

2007-05-15

Some 2005-2007 Acura RL models may exhibit a popping or clicking noise from the front suspension when driving over bumps. This may be due to the upper strut mount or sway bar links.

2005-2007

Resolution: Inspect and replace the upper strut mounts and sway bar end links. Ensure proper torque of all suspension components after replacement.

Rear Suspension Clunking Sound

2010-09-22

Certain 2008-2010 Acura RL vehicles have reported a clunking sound in the rear suspension. This can be caused by loose subframe bolts or worn bushings.

2008-2010

Resolution: Inspect and re-torque the rear subframe bolts to the specified value and replace worn bushings. Always torque suspension components with the suspension loaded.

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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