Infiniti FX35 2009-2013 Suspension Bolt Torque Specifications & Fastener Values
Infiniti FX35 2009-2013

Infiniti FX35 2009-2013 Suspension Bolt Torque Specifications

Detailed torque specifications for suspension bolts on the 2009-2013 Infiniti FX35, including front and rear suspension 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

Strut And Shock Absorber

Secures the strut or shock absorber to the vehicle's chassis or steering knuckle, ensuring proper suspension alignment and stability.

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Value
38 ft-lbs (52 N·m)
Important Notes
Estimated torque value based on similar components and bolt sizes.

Control Arm

Attaches the control arms to the vehicle's chassis or steering knuckle, maintaining proper suspension geometry and preventing excessive movement.

1

Control Arm Bolts

M16 x 1.5
Torque Value
107 ft-lbs (145 N·m)

Ball Joint

Secures the ball joint to the control arm or steering knuckle, ensuring smooth movement and zero play in the suspension.

1

Ball Joint Nut

M18 x 1.5
Torque Value
102 ft-lbs (139 N·m)

Tie Rod End

Secures the tie rod end to the steering knuckle or control arm, maintaining proper toe alignment and preventing excessive wear.

1

Tie Rod End Nut

M12 x 1.5
Torque Value
51 ft-lbs (69 N·m)

Steering Gear

Attaches the steering gear or rack to the vehicle's chassis or steering column, ensuring precise steering control and stability.

1

Steering Gear/Rack Bolts

M14 x 1.5
Torque Value
76 ft-lbs (103 N·m)

Upper Control Arm Bushing

Secures the upper control arm bushings to the vehicle's chassis or control arm, maintaining proper suspension geometry and preventing bushing damage.

1

Upper Control Arm Bushing Bolts

M12 x 1.5
Torque Value
80 ft-lbs (109 N·m)
Important Notes
Estimated torque value based on similar components and bolt sizes.

Lower Control Arm Bushing

Secures the lower control arm bushings to the vehicle's chassis or control arm, maintaining proper suspension geometry and preventing bushing damage.

1

Lower Control Arm Bushing Bolts

M12 x 1.5
Torque Value
80 ft-lbs (109 N·m)
Important Notes
Estimated torque value based on similar components and bolt sizes.

Stabilizer Bar Mounting

Attaches the stabilizer bar to the vehicle's chassis or control arm, maintaining proper sway bar function and roll stiffness.

1

Stabilizer Bar Mounting Bolts

M10 x 1.5
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Estimated torque value based on similar components and bolt sizes.

Toe Arm

Secures the toe arm to the steering knuckle or control arm, maintaining proper toe alignment and steering stability.

1

Toe Arm Bolts

M12 x 1.5
Torque Value
58 ft-lbs (79 N·m)
Important Notes
Estimated torque value based on similar components and bolt sizes.

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 suspension bolts on a 2009-2013 Infiniti FX35?

The recommended torque for suspension bolts on a 2009-2013 Infiniti FX35 typically ranges from 50 to 80 Nm (Newton meters), depending on the specific bolt and component. Always refer to the manufacturer's service manual for precise values.

Q2

How often should suspension bolts be checked and re-torqued?

Suspension bolts should be checked and re-torqued every 12,000 miles or after significant suspension work, such as replacing shocks or springs. Regular inspections ensure safety and prevent loosening due to vibration and wear.

Q3

Can improper torque affect the suspension system?

Yes, improper torque can lead to bolt loosening, causing misalignment, increased wear, and even suspension failure. Over-torqueing can damage threads or components, while under-torqueing may result in instability.

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 precision torque wrench for accurate bolt tightening.

  • Adjustable torque settings
  • Calibration certification
Learn more

Socket Set

A set of sockets compatible with suspension bolt sizes.

  • Multiple size options
  • Durable construction
Learn more
Service Procedures

Suspension Bolt Torque Application

Detailed steps for correctly applying torque to suspension bolts.

  • Identify the suspension bolt and its torque specification.
  • Set the torque wrench to the specified torque value.
  • Apply torque evenly to the bolt until the wrench clicks.
View full procedure

Suspension System Inspection

Procedure for inspecting the suspension system after torque application.

  • Check for any loose bolts using the torque wrench.
  • Inspect the suspension components for alignment.
  • Verify the vehicle's ride height and stability.
View full procedure
Technical Service Bulletins

Suspension Bolt Torque Specification Update

2012-05-15

Updated torque specifications for suspension bolts to prevent loosening.

2009-2013 Infiniti FX35

Resolution: Apply the updated torque specifications during suspension maintenance.

Suspension Bolt Failure Analysis

2011-08-20

Analysis of suspension bolt failures due to incorrect torque application.

2009-2013 Infiniti FX35

Resolution: Ensure torque wrench calibration and follow precise torque specifications.

About the Author

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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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