Acura RDX 2019-present Suspension Bolt Torque Specifications
This page provides detailed torque specifications for all suspension bolts on the 2019-Present Acura RDX, including front and rear suspension components.
Important Information
Safety guidelines and reference information for proper torque application
Safety First
- Always verify torque specifications with your vehicle's factory service manual
- Use properly calibrated torque wrenches
- Replace all torque-to-yield (TTY) bolts - they are single-use only
- When in doubt, consult a professional mechanic
Quick Reference Guide
Quick Reference Guide
Common Torque Patterns
Star Pattern
Used for wheels and other circular bolt patterns
Cross Pattern
Used for gaskets and cover plates
Sequential Pattern
Used for head bolts and other critical components
Common Mistakes to Avoid
Common Mistakes to Avoid
Over-tightening
Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.
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.
Follow the manufacturer's specified torque sequence pattern.
Dirty Threads
Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.
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.
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.
Check if specs are for dry or lubricated threads. Use specified lubricant when required.
Recommended Tools
Recommended Tools
Torque Wrench (1/4" Drive)
Torque Wrench (3/8" Drive)
Torque Wrench (1/2" Drive)
Angle Gauge
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
Components that make up the front suspension system, including control arms, stabilizer links, and strut mounts.
1 Upper Control Arm Bolt
M14 x 1.5
Upper Control Arm Bolt
M14 x 1.5Torque Value
Important Notes
2 Lower Control Arm Bolt
M16 x 1.5
Lower Control Arm Bolt
M16 x 1.5Torque Value
Important Notes
3 Stabilizer Link Bolt
M12 x 1.25
Stabilizer Link Bolt
M12 x 1.25Torque Value
Important Notes
4 Front Strut Mount Bolt
M14 x 1.5
Front Strut Mount Bolt
M14 x 1.5Torque Value
Important Notes
Rear suspension
Components that make up the rear suspension system, including control arms, stabilizer links, and strut mounts.
1 Upper Control Arm Bolt
M14 x 1.5
Upper Control Arm Bolt
M14 x 1.5Torque Value
Important Notes
2 Lower Control Arm Bolt
M16 x 1.5
Lower Control Arm Bolt
M16 x 1.5Torque Value
Important Notes
3 Stabilizer Link Bolt
M12 x 1.25
Stabilizer Link Bolt
M12 x 1.25Torque Value
Important Notes
4 Rear Strut Mount Bolt
M14 x 1.5
Rear Strut Mount Bolt
M14 x 1.5Torque Value
Important Notes
Subframe and steering
Components that make up the subframe and steering system, including subframe bolts and steering gear mounts.
1 Subframe Bolt
M18 x 1.5
Subframe Bolt
M18 x 1.5Torque Value
Important Notes
2 Steering Gear Mount Bolt
M16 x 1.5
Steering Gear Mount Bolt
M16 x 1.5Torque Value
Important Notes
Safety-critical fasteners
Fasteners that are critical to the safety of the vehicle, including upper and lower control arm nuts.
1 Upper Control Arm Nut
M14 x 1.5
Upper Control Arm Nut
M14 x 1.5Torque Value
Important Notes
2 Lower Control Arm Nut
M16 x 1.5
Lower Control Arm Nut
M16 x 1.5Torque Value
Important Notes
Troubleshooting Guide
Common issues, diagnostic steps, and prevention guidelines
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
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
Diagnostic Steps
Visual inspection, torque verification, thread assessment
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
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
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
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 important for suspension bolts?
Why are torque specifications important for suspension bolts?
Correct torque ensures proper clamping force, preventing loosening, component damage, and premature wear. Under-torqued bolts can loosen, causing instability and potential failure. Over-torqued bolts can stretch or break, weakening the joint and potentially damaging threads. For example, overtightening a lower control arm bolt can lead to premature bushing failure or even damage the control arm itself.
Q2 Should I use threadlocker on suspension bolts?
Should I use threadlocker on suspension bolts?
Generally, using a medium-strength (blue) threadlocker on suspension bolts is a good practice, especially for bolts subject to vibration and movement. Always refer to the service manual, as some locations may have manufacturer's specific instructions. For example, the lower shock mounting bolts on the RDX can benefit from a small dab of threadlocker to prevent loosening.
Q3 How often should I check my suspension bolt torque?
How often should I check my suspension bolt torque?
It is recommended to check suspension bolt torque after major repairs, component replacement, or if you notice any unusual noises or handling issues. A good practice is to re-check after 50-100 miles of driving post-work, as initial settling can occur. For regular maintenance, checking annually or every 12,000 miles is prudent, especially if the vehicle is subjected to harsh driving conditions or potholes.
Q4 What type of torque wrench should I use?
What type of torque wrench should I use?
Always use a calibrated torque wrench with the correct range for the specified torque values. For most suspension bolts on the Acura RDX, a 1/2-inch drive torque wrench with a range of 20-150 ft-lbs is suitable. Avoid using impact wrenches for tightening suspension bolts as they do not provide accurate torque readings and risk overtightening.
Q5 What if I don't have a torque wrench?
What if I don't have a torque wrench?
Tightening suspension bolts without a torque wrench is highly discouraged. It is a dangerous practice and a primary cause of suspension failure. You can potentially damage components by under- or over-tightening the bolts. It's best to have a professional service the suspension components, or purchase a torque wrench.
Environmental Considerations
Temperature, humidity, and seasonal effects on torque specifications
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
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
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
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 achieving accurate bolt torque specifications.
- Adjustable torque settings
- Click mechanism for accurate tightening
Torque Wrench (3/8" drive)
A smaller torque wrench for lower torque spec bolts.
- Adjustable torque settings
- Click mechanism for accurate tightening
Socket Set (Metric)
A comprehensive set of metric sockets, including common sizes for suspension bolts.
- Various sizes (e.g., 10mm, 12mm, 14mm, 17mm, 19mm)
- 6-point design for better grip
Extension Bars
Extension bars of various lengths to reach recessed bolts.
- Multiple lengths available
- Durable construction
Breaker Bar
Useful for loosening stubborn or overly tightened bolts prior to using the torque wrench.
- Long handle for increased leverage
- Heavy-duty construction
Service Procedures
Front Strut Assembly Installation
Procedure for installing the front strut assembly and torquing all associated bolts.
- Position the strut assembly into the wheel well.
- Install the upper strut mount bolts and hand-tighten them.
- Install the lower strut mounting bolts and hand-tighten them.
- Torque the upper strut mount bolts to 47 N-m (35 lb-ft) in a cross pattern.
- Torque the lower strut mounting bolts to 108 N-m (80 lb-ft).
- Double-check all torque settings to ensure accuracy.
- Reinstall all brake and ABS system components and check for proper clearance
Rear Shock Absorber Installation
Procedure for installing the rear shock absorber and torquing all associated bolts.
- Position the shock absorber into the rear suspension.
- Install the upper and lower shock absorber bolts by hand.
- Torque the upper shock absorber bolt to 93 N-m (69 lb-ft).
- Torque the lower shock absorber bolt to 93 N-m (69 lb-ft).
- Double-check all torque settings to ensure accuracy.
Front Lower Control Arm Installation
Procedure for installing the front lower control arm and torquing all associated bolts.
- Position the front lower control arm into the suspension.
- Install the control arm mounting bolts by hand.
- Torque the front lower control arm mounting bolts to 118 N-m (87 lb-ft).
- Torque the front lower control arm ball joint nut to 64 N-m (47 lb-ft).
- Double-check all torque settings to ensure accuracy.
Rear Upper Control Arm Installation
Procedure for installing the rear upper control arm and torquing all associated bolts.
- Position the rear upper control arm into the suspension.
- Install the control arm mounting bolts by hand.
- Torque the rear upper control arm mounting bolts to 88 N-m (65 lb-ft).
- Double-check all torque settings to ensure accuracy.
Technical Service Bulletins
Suspension Bolt Corrosion Notice
2020-07-15Notice regarding potential corrosion on certain suspension bolts due to environmental factors.
Resolution: Inspect and replace any corroded suspension bolts. Apply anti-seize compound during reassembly.
Revised Torque Specifications for Rear Control Arm
2021-03-22An update to the torque specification for the rear upper control arm mounting bolts.
Resolution: Use the revised torque specification of 88 N-m (65 lb-ft) when installing the rear upper control arm bolts.
Front Strut Mount Bolt Recall
2022-09-01Recall notice for potential manufacturing defect with front strut mount bolts. Resulting in incorrect torque.
Resolution: Replace the front strut mount bolts with updated hardware and torque to the specified value of 47 N-m (35 lb-ft) in a cross pattern.
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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.