Acura Vehicle Models MDX 2001-2006 Torque Specifications
Acura Vehicle Models MDX 2001-2006

Acura Vehicle Models MDX 2001-2006 Torque Specifications

Complete Acura Vehicle Models MDX 2001-2006 torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

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

3.5l Engine

Torque specifications for 3.5L Engine

3.5l Engine Cylinder Head

1

Cylinder Head Bolts

M11 x 1.5 (estimated)
Torque Specification
1. 18 ft-lbs (25 N·m) 2. 90° 3. 90°
Important Notes
Torque to 18 ft-lbs (25 N·m) as an initial step. An angular tightening procedure is *critical*, requiring a 90 degree rotation after the initial torque, then a second 90 degree rotation. Consult the service manual for the specific angular tightening sequence. Bolt size and thread pitch are estimated.
2

Camshaft Cap Bolts

M8 x 1.25 (estimated)
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque to 16 ft-lbs (22 N·m). Consult the service manual for the specific torque sequence. Bolt size and thread pitch are estimated.
3

Rocker Arms/Shafts Bolts

M8 x 1.25 (estimated)
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Torque to 22 ft-lbs (30 N·m). Bolt size and thread pitch are estimated.
4

Spark Plugs

M14 x 1.25 (estimated)
Torque Specification
13 ft-lbs (18 N·m)
Important Notes
Torque to 13 ft-lbs (18 N·m). Do not overtighten. Bolt size and thread pitch are estimated.
5

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25 (estimated)
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Torque to 18 ft-lbs (25 N·m). Consult the service manual for the specific torque sequence. Bolt size and thread pitch are estimated.

3.5l Engine Block

1

Main Bearing Bolts

M10 x 1.5 (estimated)
Torque Specification
49 ft-lbs (67 N·m)
Important Notes
Torque to 49 ft-lbs (67 N·m). Consult the service manual for the specific torque sequence. Bolt size and thread pitch are estimated.
2

Connecting Rod Nuts

M9 x 1.25 (estimated)
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Torque to 23 ft-lbs (31 N·m). Bolt size and thread pitch are estimated.
3

Oil Pan Bolts

M6 x 1.0 (estimated)
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque to 8 ft-lbs (11 N·m). Consult the service manual for the proper sequence. Bolt size and thread pitch are estimated.
4

Water Pump Bolts

M8 x 1.25 (estimated)
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque to 16 ft-lbs (22 N·m). Bolt size and thread pitch are estimated.
5

Oil Drain Plug

M14 x 1.5 (estimated)
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque to 29 ft-lbs (39 N·m). Bolt size and thread pitch are estimated. Use a new crush washer every time.

3.5l Engine Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25 (estimated)
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Torque to 33 ft-lbs (44 N·m). Bolt size and thread pitch are estimated.
2

Camshaft Sprocket Bolt

M10 x 1.25 (estimated)
Torque Specification
56 ft-lbs (76 N·m)
Important Notes
Torque to 56 ft-lbs (76 N·m). Bolt size and thread pitch are estimated.
3

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5 (estimated)
Torque Specification
181 ft-lbs (245 N·m)
Important Notes
Torque to 181 ft-lbs (245 N·m). Use a crankshaft holding tool to prevent rotation. Bolt size and thread pitch are estimated.

3.5l Engine Intake System

1

Intake Manifold Bolts

M6 x 1.0 (estimated)
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque to 16 ft-lbs (22 N·m). Consult the service manual for the specific torque sequence. Bolt size and thread pitch are estimated.
2

Intake Manifold Plenum/Upper Intake Manifold Bolts

M6 x 1.0 (estimated)
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque to 16 ft-lbs (22 N·m). Consult the service manual for the specific torque sequence. Bolt size and thread pitch are estimated.
3

Throttle Body Bolts

M6 x 1.0 (estimated)
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque to 16 ft-lbs (22 N·m). Bolt size and thread pitch are estimated.
4

EGR Valve Bolts

M6 x 1.0 (estimated)
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque to 16 ft-lbs (22 N·m). Bolt size and thread pitch are estimated.
5

Fuel Injector Rail Bolts

M6 x 1.0 (estimated)
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque to 16 ft-lbs (22 N·m). Bolt size and thread pitch are estimated.
6

Fuel Injector Bolts

M5 x 0.8 (estimated)
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Torque to 7 ft-lbs (9 N·m). Bolt size and thread pitch are estimated.

3.5l Engine Exhaust System

1

Exhaust Manifold/Headers Bolts

M8 x 1.25 (estimated)
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Torque to 33 ft-lbs (44 N·m). Consult the service manual for the specific torque sequence. Bolt size and thread pitch are estimated.

3.5l Engine Valve Cover

1

Valve Cover Bolts

M6 x 1.0 (estimated)
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque to 8 ft-lbs (11 N·m). Consult the service manual for the specific torque sequence. Bolt size and thread pitch are estimated.
2

Ignition Coil Bolts

M6 x 1.0 (estimated)
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque to 8 ft-lbs (11 N·m). Bolt size and thread pitch are estimated.

3.5l Engine Cooling System

1

Water Pump Pulley Bolts

M6 x 1.0 (estimated)
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque to 8 ft-lbs (11 N·m). Bolt size and thread pitch are estimated.
2

Thermostat Housing Bolts

M6 x 1.0 (estimated)
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque to 8 ft-lbs (11 N·m). Bolt size and thread pitch are estimated.

3.5l Engine Accessory Drive

1

Serpentine/Accessory Drive Belt Tensioner Bolt

M8 x 1.25 (estimated)
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Torque to 33 ft-lbs (44 N·m). Bolt size and thread pitch are estimated.
2

Drive Belt Idler Pulley Bolt

M8 x 1.25 (estimated)
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Torque to 33 ft-lbs (44 N·m). Bolt size and thread pitch are estimated.

3.5l Engine Flywheel

1

Flywheel Bolts

M10 x 1.25 (estimated)
Torque Specification
94 ft-lbs (127 N·m)
Important Notes
Torque to 94 ft-lbs (127 N·m). Consult the service manual for the specific torque sequence. Bolt size and thread pitch are estimated.

3.5l Engine Oil Filter

1

Oil Filter Cap

N/A
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Hand-tighten until the cap is snug. This will generally achieve approximately 18 ft-lbs (24 N·m). Use a new o-ring each time. Bolt size is N/A

B7xa Transmission

Torque specifications for B7xa Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.25
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Tighten bolts in a crisscross pattern to ensure even distribution of force. Ensure transmission and engine mounting surfaces are clean.

Transmission Case

1

Transmission Case Bolts (internal)

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Tighten case bolts in a sequential crisscross pattern. Ensure the case mating surfaces are clean and free of debris. Proper torque is critical for avoiding oil leaks.

Transmission Pan

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Tighten bolts in a crisscross pattern. Ensure the pan and case mating surfaces are clean and free of debris. Use a new gasket or sealant.

Transmission External

1

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Use a new crush washer on drain and fill plugs. Overtightening may damage the transmission case. Make sure sealing surfaces are clean and free of debris.
2

Transmission Cooler Line Fittings (Banjo Bolts)

M12 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Use new crush washers on banjo fittings. Overtightening can damage fittings, causing fluid leaks. Ensure all mating surfaces are clean and undamaged. This is an estimated value.
3

Transmission Solenoid Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Tighten carefully to prevent damage to the solenoid housing. Ensure the mating surface is clean and free of debris. Proper torque is critical to avoid oil leaks.
4

Transmission Range Sensor Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Tighten carefully to ensure proper alignment of the sensor. Sensor and mounting area should be free of dirt and debris.
5

Transmission Speed Sensor Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Tighten carefully to avoid damaging the speed sensor. Ensure the sensor and mounting surface are clean.

Drivetrain

1

Drive Axle/Half Shaft Bolts

M10 x 1.25
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Tighten bolts in a crisscross pattern. Always check and replace if they show signs of damage. Ensure axle and flange mating surfaces are clean.
2

Torque Converter Bolts (to Flexplate)

M10 x 1.25
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Tighten bolts in a crisscross pattern to evenly distribute the load and prevent distortion. Use new bolts if they are torque to yield. Ensure the flexplate and converter mating surfaces are clean and free of debris.

Body

Torque specifications for Body

Body Panels

1

Hood Hinge Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure proper alignment of the hood before tightening. Do not over-tighten as this can cause binding.
2

Fender Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Do not over-tighten as this can warp the fender. Ensure proper fender alignment.
3

Bumper Cover Mounting Bolts/Screws

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value for most bumper cover fasteners; may use plastic screws. Do not overtighten plastic hardware.
4

Grille Mounting Bolts/Screws

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value for most grille fasteners; may use plastic screws. Do not overtighten plastic hardware.
5

Headlight Mounting Bolts/Screws

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value for headlight fasteners. Do not over-tighten.
6

Taillight Mounting Bolts/Screws

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value for taillight fasteners. Do not over-tighten.

Doors

1

Door Hinge Bolts

M8 x 1.25 or M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure proper door alignment before tightening. Use correct size bolts for your vehicle.
2

Door Latch Striker Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Adjust the striker position to ensure proper door latching before tightening.
3

Door Panel Screws

Self-tapping Sheet Metal Screws
Torque Specification
0.66 ft-lbs (0.9 N·m)
Important Notes
Hand-tighten only. Do not over-tighten as this can damage the panel or screw threads. Estimated value.
4

Door Glass Regulator Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Do not over-tighten as this can damage the regulator.

Rear Hatch Tailgate

1

Rear Hatch/Tailgate Hinge Bolts

M8 x 1.25 or M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure proper hatch/tailgate alignment before tightening. Use correct size bolts for your vehicle.
2

Rear Hatch/Tailgate Latch Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Adjust the latch position to ensure proper closing and sealing before tightening.

Interior

1

Seat Mounting Bolts

M10 x 1.5 or M12 x 1.75
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Ensure all seats are properly aligned before tightening. Averages between 28-35 ft-lbs, estimated value.
2

Seat Belt Anchor Bolts

M10 x 1.5
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Critical safety component. Do not over or under-tighten. Averages between 25-30 ft-lbs, estimated value.
3

Dashboard Mounting Bolts/Screws

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value for most dashboard fasteners; may use plastic screws. Do not overtighten plastic hardware.
4

Center Console Bolts/Screws

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value for most center console fasteners; may use plastic screws. Do not overtighten plastic hardware.

Steering

1

Steering Column Mounting Bolts

M10 x 1.5
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Critical safety component, Averages between 25-30 ft-lbs, estimated value. Do not over or under-tighten.

Roof

1

Sunroof Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Do not overtighten as this can damage the sunroof assembly.

Brakes

Torque specifications for Brakes

Brake Calipers

1

Brake Caliper Bolts

M10 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Secures the caliper to the mounting bracket. Use a calibrated torque wrench for accuracy. Ensure bolts are in good condition, and replace if corroded or damaged.
2

Brake Caliper Mounting Bracket Bolts

M12 x 1.75
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Secures the caliper mounting bracket to the wheel knuckle or hub assembly. Use a calibrated torque wrench for accuracy. Ensure mounting surfaces are clean. These bolts carry a high load and must be torqued properly.

Brake Rotors

1

Brake Disc/Drum Retaining Bolts

M8 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
These bolts are used to temporarily hold the brake disc/rotor in place during assembly. Although wheel lug nuts secure the disc when the wheel is installed, these bolts ensure the rotor does not shift out of position when the wheel is removed or during initial assembly. Do not overtighten these bolts. If they seem stripped or worn, replace before reusing.

Brake Hydraulic System

1

Brake Line Fitting (Banjo Bolt) at Caliper

M10 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Secures the brake line to the caliper. Always use new copper crush washers. Ensure that there is a good seal on the crush washers before torquing. Overtightening can cause damage.
2

Brake Bleeder Screw

M7 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Used for bleeding air from the brake system. Do not overtighten, as this can break the bleeder screw. If screw is corroded or damaged, replace it.

Brake Master Cylinder And Booster

1

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Secures the master cylinder to the brake booster. Do not overtighten, as this can damage the master cylinder or the mounting location. Verify all contact surfaces are clean.
2

Brake Booster Mounting Nuts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Secures the brake booster to the firewall. Verify all contact surfaces are clean. Overtightening can damage the booster, and undertightening may allow movement which would impact performance of the brake system.

Drivetrain

Torque specifications for Drivetrain

Drivetrain Engine

1

Flywheel Bolts

M12 x 1.25
Torque Specification
94 ft-lbs (127 N·m)
Important Notes
Tighten bolts in a star pattern to ensure even pressure.
2

Torque Converter Bolts (to Flywheel)

M10 x 1.25
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Estimated value. Tighten bolts in a star pattern.

Drivetrain Transmission

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Ensure transmission is properly aligned before tightening.
2

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure. Do not over-tighten to avoid warping the pan.
3

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Use a new sealing washer if applicable. Do not over-tighten to avoid stripping threads.

Drivetrain Axles

1

Drive Axle/Half Shaft Bolts

M10 x 1.25
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Tighten evenly to prevent misalignment.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
181 ft-lbs (245 N·m)
Important Notes
Use a new nut if required. Torque with the vehicle's wheel on the ground.
3

Propeller/Drive Shaft Bolts

M10 x 1.25
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Tighten bolts evenly. Ensure driveshaft is properly aligned.
4

Driveshaft Center Support Bearing Bolts

M8 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Ensure bearing is centered during installation.

Drivetrain Differential Transfercase

1

Differential Drain/Fill Plug

M18 x 1.5
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Use a new sealing washer if applicable. Do not over-tighten to avoid stripping threads.
2

Transfer Case Drain/Fill Plug

M18 x 1.5
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Use a new sealing washer if applicable. Do not over-tighten to avoid stripping threads.
3

Differential Mounting Bolts

M12 x 1.75
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Estimated value. Tighten evenly to ensure proper differential alignment.

Electrical

Torque specifications for Electrical

Electrical Ignition

1

Ignition Coil Mounting Bolt

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure proper seating of the coil before tightening. Over-tightening can damage the coil housing.

Electrical Starting

1

Starter Motor Mounting Bolts

M10 x 1.25
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Ensure starter motor is properly aligned with the engine block before tightening. Proper torque is necessary for secure mounting and grounding.

Electrical Charging

1

Alternator Mounting Bolts

M10 x 1.25
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Ensure proper alignment of the alternator before tightening. Over-tightening can damage the alternator housing or mounting bracket.

Electrical Battery

1

Battery Terminal Nuts

M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure terminals are clean and properly seated. Over-tightening can damage the battery posts or terminals. Proper torque is critical for good electrical contact and ensuring optimal battery charging.

Electrical Control Modules

1

Engine Control Module (ECM/PCM) Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value. Do not over-tighten. Over-tightening can cause damage to the module or the mounting bracket.

Electrical Grounding

1

Ground Cable Attachment Bolts (Body/Frame)

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure mating surfaces are clean and free of corrosion. Proper torque is crucial for ensuring a solid ground connection. Over-tightening may damage the mounting point.

Electrical Sensors

1

Sensor Mounting Bolts (Crank Position, Cam Position, etc.)

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value. Do not over-tighten as this may damage the sensor or the mounting point. These sensors often ground through their mounting points, so proper torque is important.

Electrical Distribution

1

Fuse Box/Relay Box Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value. Do not over-tighten. Over-tightening may cause damage to the box or mounting bracket.

Electrical Lighting

1

Headlight/Taillight Mounting Bolts

M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value. Do not over-tighten as this can damage the plastic housings. Ensure proper alignment and seating before tightening.

Emissions Sensors

Torque specifications for Emissions_sensors

3.0l Engine Cylinder Head

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten in a sequence starting from the center and working outwards to ensure even pressure. Check for leaks after installation.

3.0l Intake Manifold

1

EGR Valve Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure mounting surfaces are clean and free of debris before installation. Do not over-tighten.
2

Manifold Air Pressure (MAP) Sensor Mounting Bolt(s)

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value. Do not overtighten, as the sensor housing is often plastic. Torque to the lower end of the range if unsure.
3

Evaporative Emission (EVAP) Purge Valve Mounting Bolt(s)

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value. Do not overtighten, as the valve housing is often plastic. Ensure a good seal and torque to the lower end if unsure.

Exhaust System

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.25
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Ensure a new gasket is used and the pipe is correctly aligned. Tighten evenly to prevent leaks.
2

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Ensure a new gasket is used and all mating surfaces are clean. Tighten evenly to prevent leaks.
3

Muffler to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Ensure the muffler is properly aligned and use new gaskets or hangers as needed.
4

Oxygen Sensor (O2 Sensor)

M18 x 1.5
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Estimated Value. Refer to the sensor manufacturer's specification for exact torque. Use anti-seize compound on threads. Avoid over-tightening, as it can damage the sensor.
5

Air-Fuel Ratio Sensor

M18 x 1.5
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Estimated value. Refer to sensor documentation for specific torque. Apply anti-seize compound to threads. Do not overtighten.

Evaporative Emissions

1

Evaporative Emission (EVAP) Canister Mounting Bolt(s)

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure the canister is properly positioned before tightening. Do not over-tighten.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Proper torque ensures a secure fit and prevents warping or damage to the gasket.

Exhaust Pipe Connections

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Ensure a secure and leak-free joint for proper exhaust flow.
2

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Maintains exhaust system integrity and prevents leaks that could affect emissions.
3

Muffler to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Ensures a secure connection and prevents exhaust leaks or noise issues.

Fuel

Torque specifications for Fuel

Fuel Delivery System

1

Fuel Rail Mounting Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure.
2

Fuel Injector Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Do not overtighten. Ensure injector seals are properly seated before tightening.
3

Fuel Line Fittings (to Fuel Rail, Filter, and Pump)

Varies (M12 x 1.5 estimated)
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated value. Torque varies by fitting size and type. Use a backup wrench on fitting during torque application to prevent twisting and damage. Always refer to the specific service manual for your vehicle.
4

Fuel Pressure Regulator Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Do not overtighten. Ensure regulator is properly seated. Estimated value.
5

Fuel Filter Mounting Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure filter assembly is properly aligned.

Fuel Tank System

1

Fuel Pump Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Tighten bolts evenly to ensure good seal and proper pump operation. Do not overtighten.
2

Fuel Tank Access Cover Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure proper alignment of the access cover to prevent vapor leaks. Do not over tighten.
3

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure fuel tank is properly supported and aligned during tightening.
4

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the filler neck is properly aligned and sealed to the fuel tank. Do not over tighten.

Hvac

Torque specifications for Hvac

Air Conditioning System

1

A/C Compressor Mounting Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Proper torque is essential to prevent damage to the compressor and surrounding components.
2

A/C Line Fittings

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Hand-tighten the fittings to prevent over-tightening. Estimated value.
3

A/C Condenser Mounting Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Estimated value based on industry standards. Consult manufacturer's recommendations for accurate information.
4

A/C Evaporator Mounting Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on industry standards. Consult manufacturer's recommendations for accurate information.
5

A/C Receiver-Drier Mounting Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on industry standards. Consult manufacturer's recommendations for accurate information.

Suspension

Torque specifications for Suspension

Front Suspension

1

Front Strut/Shock Absorber Upper Mounting Bolts

M10 x 1.25
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Secures the upper strut mount to the vehicle's chassis.
2

Front Lower Strut Mount Bolt (Strut to Knuckle)

M14 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Secures the lower strut mount to the steering knuckle. Critical for suspension integrity.
3

Front Upper Strut Mount Nuts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Secures the upper strut mount to the chassis.
4

Front Control Arm Bolts

M12 x 1.75
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Secures the control arm to the frame/subframe and knuckle. This torque applies to both inner and outer bolts unless otherwise specified.
5

Front Ball Joint Nut

M14 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Secures the ball joint to the control arm or steering knuckle.
6

Front Sway Bar Link Nut

M10 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Secures the sway bar link to the sway bar and strut or control arm.

Rear Suspension

1

Rear Lower Strut Mount Bolt (Strut to Lower Control Arm)

M14 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Secures the lower strut mount to the lower control arm.
2

Rear Upper Control Arm Bolts

M12 x 1.75
Torque Specification
43 ft-lbs (58 N·m)
Important Notes
Secures the upper control arm to the frame/subframe.
3

Rear Lower Control Arm Bolts

M12 x 1.75
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Secures the lower control arm to the frame/subframe and knuckle. This torque value is estimated to be the same as the front control arms and should be verified.

Steering System

1

Tie Rod End Nut

M12 x 1.25
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Secures the tie rod end to the steering knuckle or rack.
2

Steering Gear/Rack Mounting Bolts

M12 x 1.75
Torque Specification
33 ft-lbs (44 N·m)
Important Notes
Secures the steering rack to the vehicle's chassis or subframe.

Sway Bar System

1

Sway Bar Bracket/Bushing Bolts

M10 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Secures the sway bar mounting brackets to the vehicle's frame or subframe.

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 spark plugs in a 2002 Acura MDX?

Tighten spark plugs to 23 ft-lb (31 Nm) plus an additional 90 degrees of rotation.

Q2

How do I properly tighten lug nuts on my 2006 Acura MDX?

Hand-tighten lug nuts, then use a torque wrench to tighten them to 80 ft-lb (109 Nm) in a star pattern. Double-check tightness after 50 miles of driving.

Q3

What type of torque wrench IS best for working on my 2001 Acura MDX?

Use a high-quality click-type or beam-type torque wrench with a range that covers the specified torque values for your vehicle. Refer to the Acura service manual for specific torque specifications.

Q4

Can I use a torque multiplier to increase the torque output of my wrench?

Yes, but be cautious and follow the torque multiplier manufacturer's instructions carefully. Using the incorrect multiplier ratio or exceeding the wrench's capacity can damage the wrench or result in inaccurate torque measurements.

Q5

How often should I check and tighten bolts and nuts on my 2003 Acura MDX?

Inspect and tighten critical bolts and nuts as per the recommended maintenance schedule in your Acura service manual. Some bolts may require tightening after 500 miles or 1,000 miles of driving, while others may need attention less frequently.

Q6

What are the consequences of overtightening bolts and nuts?

Overtightening can strip or damage threads, stretch bolts, and cause components to crack. Always follow the specified torque values and use a torque wrench to ensure accuracy.

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

Digital Torque Wrench (10-100 Nm)

Essential for tightening fasteners to precise torque specifications, preventing damage and ensuring proper assembly. This range IS suitable for many applications on the Mdx.

  • Digital display for accurate readings
  • Audible alarm when target torque IS reached
  • Multiple units (Nm, ft-lb, in-lb)
  • Reversible ratcheting mechanism
Learn more
Service Procedures

Engine Bolt Torque Specifications

Technical procedure overview specific to Acura Mdx engine bolts.

  • Cylinder Head Bolts: 76 ft-lb (103 Nm) + 90 degrees
  • Camshaft Sprocket Bolts: 22 ft-lb (30 Nm)
  • Crankshaft Pulley Bolt: 80 ft-lb (108 Nm) + 90 degrees
View full procedure

Suspension Bolt Torque Specifications

Technical procedure overview specific to Acura Mdx suspension bolts.

  • Upper Control Arm Bolts: 76 ft-lb (103 Nm)
  • Lower Control Arm Bolts: 103 ft-lb (140 Nm)
  • Sway Bar End Links: 33 ft-lb (45 Nm)
View full procedure

Brake Bolt Torque Specifications

Technical procedure overview specific to Acura Mdx brake bolts.

  • Caliper Mounting Bolts: 59 ft-lb (80 Nm)
  • Rotor Mounting Bolts: 22 ft-lb (30 Nm)
  • Brake Line Connection Bolt: 33 ft-lb (45 Nm)
View full procedure
Technical Service Bulletins

2001-2006 Acura Mdx: Service Bulletin - Engine Head Bolt Torque Specifications

2004-06-15

Bulletin to address updated torque specifications for engine head bolts on 2001-2006 Mdx models.

2001-2006 Mdx

Resolution: Revised torque specifications: 76 ft-lb (103 Nm) + 90 degrees

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.

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.

© 2025 Acura Specs. All rights reserved.

Privacy Policy Terms of Service