Subaru Subaru Impreza 2007-2011 Drivetrain Bolt Torque Specifications & Fastener Values
Subaru Subaru Impreza 2007-2011

Subaru Subaru Impreza 2007-2011 Drivetrain Bolt Torque Specifications

Detailed torque specifications for the drivetrain components of the 2007-2011 Subaru Impreza, including axle nuts, driveshaft bolts, and differential fasteners.

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

Flywheel

The flywheel connects the engine to the transmission and ensures smooth power transfer. Proper torque ensures the flywheel remains securely attached, preventing misalignment or damage to the transmission input shaft.

1

Flywheel Bolts

M10 x 1.25
Torque Value
51 ft-lbs (69 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper sequence to avoid warping the flywheel.

Transmission Mounting

These bolts secure the transmission to the chassis. Proper torque ensures the transmission remains stable, reducing vibrations and preventing misalignment with the engine and drivetrain components.

1

Transmission Mounting Bolts

M12 x 1.75
Torque Value
36.5 ft-lbs (49.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure mounts are properly aligned before tightening.

Drive Axle

These bolts secure the drive axles to the transmission or differential. Proper torque ensures the axles remain securely attached, preventing leaks or separation that could lead to drivetrain failure.

1

Drive Axle/Half Shaft Bolts

M14 x 1.5
Torque Value
67 ft-lbs (91 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the axle before tightening.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Value
166.5 ft-lbs (226 N·m)
Important Notes
Torque value is the midpoint of the provided range. Use a torque wrench capable of handling high torque values.

Propeller Shaft

These bolts secure the drive shaft to the transmission and differential. Proper torque ensures the drive shaft remains securely attached, preventing vibrations or drivetrain misalignment.

1

Propeller/Drive Shaft Bolts

M12 x 1.75
Torque Value
65.5 ft-lbs (89 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the drive shaft before tightening.

Transmission Fluid System

These bolts and plugs secure the transmission oil pan and allow for the draining and filling of transmission fluid. Proper torque prevents leaks and ensures the transmission fluid system remains sealed.

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Value
0.5 ft-lbs (0.7 N·m)
Important Notes
Torque value is the midpoint of the provided range. Use a torque wrench capable of handling low torque values.
2

Transmission Drain and Fill Plugs

M14 x 1.5
Torque Value
36 ft-lbs (49 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper sealing to prevent leaks.

Differential Fluid System

These plugs allow for the draining and filling of differential fluid. Proper torque prevents leaks and ensures the differential is properly lubricated.

1

Differential Drain/Fill Plug

M14 x 1.5
Torque Value
39.5 ft-lbs (53.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper sealing to prevent leaks.

Transfer Case Fluid System

These plugs allow for the draining and filling of transfer case fluid. Proper torque prevents leaks and ensures the transfer case is properly lubricated.

1

Transfer Case Drain/Fill Plug

M14 x 1.5
Torque Value
36 ft-lbs (49 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper sealing to prevent leaks.

Differential Mounting

These bolts secure the differential to the chassis. Proper torque ensures the differential remains stable, preventing misalignment or damage to the drivetrain.

1

Differential Mounting Bolts

M12 x 1.75
Torque Value
55 ft-lbs (75 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the differential before tightening.

Transfer Case Mounting

These bolts secure the transfer case to the chassis. Proper torque ensures the transfer case remains securely attached, preventing vibrations or misalignment.

1

Transfer Case Mounting Bolts

M10 x 1.25
Torque Value
45 ft-lbs (61 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the transfer case before tightening.

Rear Differential

These bolts secure the driveshaft to the differential. Proper torque ensures the driveshaft remains securely attached, preventing drivetrain vibrations or failure.

1

Rear Differential Pinion Flange Bolts

M12 x 1.75
Torque Value
75 ft-lbs (102 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the driveshaft before tightening.

Front Differential

These bolts secure the front differential to the chassis. Proper torque ensures the differential remains stable, preventing misalignment or damage to the drivetrain.

1

Front Differential Carrier Bolts

M12 x 1.75
Torque Value
65 ft-lbs (88 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the differential before tightening.

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 torque specification for the driveshaft bolts on a 2007-2011 Subaru Impreza?

The torque specification for the driveshaft bolts is typically 33.2 lb-ft (45 Nm). Always refer to the manufacturer's service manual for your specific model and year, as specifications may vary slightly.

Q2

How often should I check the torque on drivetrain components?

It is recommended to check the torque on drivetrain components during routine maintenance, such as every 30,000 miles or after any significant drivetrain work. This ensures bolts remain secure and prevents potential failures.

Q3

Can I reuse the same bolts when reassembling the drivetrain?

It is generally recommended to replace critical drivetrain bolts, such as those for the driveshaft or differential, as they are often torque-to-yield bolts designed for one-time use. Reusing them can compromise their integrity and lead to failure.

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 tool used to apply a specific torque to a fastener such as a bolt or nut.

  • Adjustable torque settings
  • Calibrated for accuracy
Learn more

Socket Set

A set of sockets in various sizes to fit different bolts and nuts.

  • Includes both metric and standard sizes
  • Durable construction
Learn more

Breaker Bar

A long-handled tool used to loosen tight bolts and nuts.

  • High leverage for tough bolts
  • Durable steel construction
Learn more
Service Procedures

Drivetrain Bolt Torque Specifications

Detailed steps to ensure proper torque application for drivetrain bolts on a 2007-2011 Subaru Impreza.

  • Locate the drivetrain bolts requiring torque application.
  • Refer to the manufacturer's torque specifications for each bolt.
  • Set the torque wrench to the specified torque value.
  • Apply torque to each bolt in a crisscross pattern to ensure even distribution.
  • Double-check each bolt to ensure it meets the specified torque.
View full procedure

Driveshaft Bolt Replacement

Procedure for replacing and torquing driveshaft bolts.

  • Remove the old driveshaft bolts using a breaker bar and socket set.
  • Clean the bolt holes to ensure proper seating of new bolts.
  • Install new bolts and hand-tighten them.
  • Use a torque wrench to apply the specified torque to each bolt.
  • Verify torque settings and recheck after a short drive.
View full procedure
Technical Service Bulletins

Drivetrain Bolt Loosening Issue

2009-05-15

Reports of drivetrain bolts loosening over time, leading to potential drivetrain failure.

2007-2011 Subaru Impreza

Resolution: Ensure all drivetrain bolts are torqued to the manufacturer's specifications and recheck torque after 500 miles of driving.

Incorrect Torque Specifications in Manual

2010-08-20

Some service manuals for 2007-2011 Subaru Impreza models contain incorrect torque specifications for drivetrain bolts.

2007-2011 Subaru Impreza

Resolution: Refer to the updated torque specifications provided by Subaru and ensure all bolts are torqued correctly.

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.

Facebook Contact
15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

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.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

© 2025 Subaru Specs. All rights reserved.

Privacy Policy Terms of Service