Acura MDX 2014-2020 Body Panel & Frame Bolt Torque Specifications
Acura MDX 2014-2020

Acura MDX 2014-2020 Body & Frame Bolt Torque Specifications

Detailed torque specifications for body bolts on the 2014-2020 Acura MDX, including locations and tightening procedures.

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

Body Panels

Torque specifications for body panels and exterior components.

1

Hood Hinge Bolts

M8 x 1.25
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Estimated torque value. Ensure proper hinge alignment during installation.
2

Fender Mounting Bolts

M6 x 1.0
Torque Value
11 ft-lbs (15 N·m)
Important Notes
Estimated torque value. Ensure proper fender alignment during installation.
3

Bumper Mounting Bolts

M10 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Estimated torque value. Ensure bumper is properly aligned before tightening.
4

Grille Mounting Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Ensure proper alignment of the grille before tightening bolts.
5

Headlight Mounting Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Ensure proper alignment and aiming after mounting.
6

Taillight Mounting Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Tighten bolts securely. Do not overtighten

Body Doors

Torque specifications for door components.

1

Door Hinge Bolts

M8 x 1.25
Torque Value
16 ft-lbs (22 N·m)
Important Notes
Estimated torque. Ensure proper door alignment during installation.
2

Door Latch/Striker Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Ensure proper engagement between latch and striker.

Body Interior

Torque specifications for interior body components.

1

Seat Mounting Bolts

M10 x 1.5
Torque Value
33 ft-lbs (45 N·m)
Important Notes
Important for safety. Ensure correct mounting and torque.
2

Dashboard/Instrument Panel Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Tighten to prevent rattles and ensure proper fit.

Fuel System

Torque specifications for fuel system components that attach to the body.

1

Fuel Tank Strap Bolts

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensure proper support and secure fit of the fuel tank.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Ensure a leak-free seal between the filler neck and body.
3

Fuel Pump Mounting Bolts

M6 x 1.0
Torque Value
8.7 ft-lbs (12 N·m)
Important Notes
Ensures a secure seal to prevent fuel leaks

Wheel Components

Torque specifications for wheel components.

1

Wheel Lug Nuts

M14 x 1.5
Torque Value
80 ft-lbs (108 N·m)
Important Notes
Tighten in a star pattern for even distribution.

Ac System

Torque specifications for A/C line fittings which attach to body components.

1

A/C Line Fittings

N/A
Torque Value
11 ft-lbs (15 N·m)
Important Notes
These torque values are estimated for most typical A/C line fitting sizes. Ensure that sealing surfaces are in good condition.

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 it important to use the correct torque specifications for body bolts?

Using the correct torque is crucial for safety and vehicle integrity. Over-tightening can damage the bolt, the body panel, or mounting points, leading to stripping, cracking, or distortion. Under-tightening can result in loose panels, vibrations, noise, and potential component detachment, particularly with structural parts like bumper beams or fender mounts.

Q2

What happens if I over-torque a body bolt?

Over-torquing can stretch the bolt beyond its yield point, weakening it and increasing the risk of failure. It can also damage the threads in the body panel, requiring expensive repairs. In severe cases, over-torquing can cause damage to adjacent parts, such as cracking plastic bumper covers. You may even strip the head of the bolt, making it very difficult to remove.

Q3

Can I reuse body bolts?

While some body bolts can be reused if they are in good condition (no visible stretching, damage, or rust), it is generally recommended to replace critical or torque-to-yield (TTY) bolts. TTY bolts are designed to stretch a precise amount and should ALWAYS be replaced. Many body bolts on the MDX are not TTY, but always inspect and if you are unsure, err on the side of safety and replace it. Ensure the bolt has the correct grade marked on the bolt head before re-installation.

Q4

Do torque specifications change based on material?

Yes, torque specifications are often different for fasteners connecting different materials. For example, a bolt going into a steel frame will have a different torque spec than a bolt attaching a plastic fender or bumper cover. Some bolts may require a specified lubricant applied to the threads, which affects the torque. Always consult the service manual to ensure you have the correct specification for the specific bolt and connection material.

Q5

Where can I find the torque specifications for specific body bolts on my 2014-2020 Acura MDX?

The most reliable source for torque specifications is the official Acura service manual for your specific model year. These manuals contain detailed information for each bolt throughout the vehicle. You can often find these manuals online, through libraries, or from Acura dealerships. Many online repair databases also offer the specs, but always confirm from a reputable source before torquing critical fasteners.

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" Drive)

A calibrated torque wrench is essential for accurately tightening body bolts to the manufacturer's specifications.

  • Adjustable torque settings
  • Audible click or visual indicator when target torque is reached
Learn more

Torque Wrench (3/8" Drive)

A smaller drive torque wrench can be useful for lower torque applications.

  • Adjustable torque settings
  • Audible click or visual indicator when target torque is reached
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets, including various sizes needed for body bolts on the 2014-2020 Acura MDX.

  • Wide range of sizes
  • Durable construction
Learn more

Extension Bars

Extension bars of varying lengths to reach bolts in recessed or difficult locations.

  • Various lengths
  • Secure socket attachment
Learn more
Service Procedures

Body Bolt Torque Procedure

This procedure outlines the steps for tightening body bolts to the correct torque specification on a 2014-2020 Acura MDX.

  • 1. Identify the specific body bolt location and the required torque specification from the service manual.
  • 2. Select the appropriate socket size and attach it to the torque wrench.
  • 3. Loosely install the bolt by hand, ensuring it is correctly threaded.
  • 4. Set the torque wrench to the specified value for the bolt.
  • 5. Place the socket on the bolt and tighten slowly until the torque wrench indicates that the target torque has been reached (audible click or visual indicator).
  • 6. Verify that the bolt is properly tightened without overtightening. Do not re-tighten once the wrench clicks, this may lead to over-torquing and damage.
  • 7. Repeat for all other body bolts as required, following the specified tightening sequence if applicable.
View full procedure

Door Hinge Bolt Torque Procedure

This procedure outlines the steps for tightening door hinge bolts to the correct torque specification on a 2014-2020 Acura MDX.

  • 1. Open the door to allow easy access to the hinge bolts.
  • 2. Identify the specific door hinge bolts and the required torque specification from the service manual.
  • 3. Select the appropriate socket size and attach it to the torque wrench.
  • 4. Loosely install the bolt by hand, ensuring it is correctly threaded.
  • 5. Set the torque wrench to the specified value for the bolt.
  • 6. Place the socket on the bolt and tighten slowly until the torque wrench indicates that the target torque has been reached (audible click or visual indicator).
  • 7. Verify that the bolt is properly tightened without overtightening. Do not re-tighten once the wrench clicks, this may lead to over-torquing and damage.
  • 8. Repeat for all door hinge bolts.
View full procedure
Technical Service Bulletins

Corrosion on Body Bolts

2017-03-15

Some 2014-2016 Acura MDX vehicles may exhibit corrosion on body bolts due to environmental factors.

2014-2016

Resolution: Inspect bolts for corrosion, replace affected bolts with new ones. Apply anti-seize compound to new bolts. Use correct torque specifications when tightening new bolts.

Rear Hatch Alignment Issues

2018-11-20

Some 2017-2020 Acura MDX vehicles may experience rear hatch alignment problems due to loose or improperly torqued body bolts.

2017-2020

Resolution: Inspect and torque all rear hatch bolts to the specified torque. If damage exists replace all necessary hardware.

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.

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