Infiniti Vehicle Models FX35 2003-2008 Torque Specifications
Infiniti Vehicle Models FX35 2003-2008

Infiniti Vehicle Models FX35 2003-2008 Torque Specifications

Complete Infiniti Vehicle Models FX35 2003-2008 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

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 25 ft-lbs (34 N·m) 2. 33 ft-lbs (45 N·m)
Important Notes
Follow the manufacturer's specified torque sequence to ensure even clamping force.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before tightening.

Crankshaft And Bearings

1

Main Bearing Bolts

M12 x 1.75
Torque Specification
56 ft-lbs (76 N·m)
Important Notes
Follow the manufacturer's specified torque sequence to ensure proper crankshaft alignment.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the connecting rod bearings are properly seated before tightening.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2

Camshaft Sprocket Bolt

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure the sprocket is properly aligned with the camshaft.

Intake And Exhaust

1

Intake Manifold Bolts

M6 x 1.0
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Follow the manufacturer's specified torque sequence to ensure a proper seal.
2

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Ensure the exhaust manifold gasket is properly seated before tightening.

Oil System

1

Oil Pan Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure the oil pan gasket is properly seated before tightening.
2

Oil Drain Plug Bolt

M14 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Replace the crush washer to ensure a proper seal.

3.5l V6 Engine

Torque specifications for 3.5L-V6 Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 25 ft-lbs (34 N·m) 2. 33 ft-lbs (45 N·m)
Important Notes
Follow the manufacturer's specified torque sequence to ensure even clamping force.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before tightening.

Crankshaft And Bearings

1

Main Bearing Bolts

M12 x 1.75
Torque Specification
56 ft-lbs (76 N·m)
Important Notes
Follow the manufacturer's specified torque sequence to ensure proper crankshaft alignment.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the connecting rod bearings are properly seated before tightening.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2

Camshaft Sprocket Bolt

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure the sprocket is properly aligned with the camshaft.

Intake And Exhaust

1

Intake Manifold Bolts

M6 x 1.0
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Follow the manufacturer's specified torque sequence to ensure a proper seal.
2

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Ensure the exhaust manifold gasket is properly seated before tightening.

Oil System

1

Oil Pan Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure the oil pan gasket is properly seated before tightening.
2

Oil Drain Plug Bolt

M14 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Replace the crush washer to ensure a proper seal.

5r05 Transmission

Torque specifications for 5r05 Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Torque value range: 30-37 ft-lbs (40-50 N·m)

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque value range: 8-10 ft-lbs (11-14 N·m)

Transmission Fluid System

1

Transmission Drain and Fill Plugs

M14 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value range: 29-43 ft-lbs (39-58 N·m)
2

Transmission Fluid Drain/Fill Plug

M14 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value range: 29-43 ft-lbs (39-58 N·m)

Transmission Bellhousing

1

Transmission Bellhousing Bolts

M14 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated torque value range: 40-50 ft-lbs (54-68 N·m)

Transmission Crossmember

1

Transmission Crossmember Bolts

M16 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated torque value range: 50-60 ft-lbs (68-81 N·m)

Transmission Cooler Lines

1

Transmission Cooler Line Fittings

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated torque value range: 20-30 ft-lbs (27-41 N·m)

Transmission Solenoid Pack

1

Transmission Solenoid Pack Bolts

M10 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated torque value range: 10-15 ft-lbs (14-20 N·m)

Body

Torque specifications for Body

Suspension

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Estimated average torque value from the given range.
2

Control Arm Bolts

M16 x 1.5
Torque Specification
89 ft-lbs (121 N·m)
Important Notes
Estimated average torque value from the given range.

Steering

1

Steering Gear/Rack Bolts

M14 x 1.5
Torque Specification
79 ft-lbs (107 N·m)
Important Notes
Estimated average torque value from the given range.

Braking

1

Brake Caliper Mounting Bracket Bolts

M12 x 1.5
Torque Specification
79 ft-lbs (107 N·m)
Important Notes
Estimated average torque value from the given range.
2

Brake Caliper Bolts

M10 x 1.5
Torque Specification
19 ft-lbs (26 N·m)
Important Notes
Estimated average torque value from the given range.

Body and Trim

1

Front Bumper Mounting Bolts

M12 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated average torque value from the given range.
2

Rear Bumper Mounting Bolts

M12 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated average torque value from the given range.
3

Hood Hinge Bolts

M10 x 1.5
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated average torque value from the given range.
4

Trunk Lid Hinge Bolts

M10 x 1.5
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated average torque value from the given range.
5

Door Hinge Bolts

M10 x 1.5
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated average torque value from the given range.

Brakes

Torque specifications for Brakes

Brake Caliper System

1

Brake Caliper Bolts

M10 x 1.25
Torque Specification
19.5 ft-lbs (26.5 N·m)
Important Notes
Torque value is an average of the provided range (16-23 ft-lbs).
2

Brake Caliper Mounting Bracket Bolts

M12 x 1.5
Torque Specification
79 ft-lbs (107 N·m)
Important Notes
Torque value is an average of the provided range (70-88 ft-lbs).

Brake Rotor Drum System

1

Brake Disc/Drum Retaining Bolts

M8 x 1.25
Torque Specification
30.5 ft-lbs (41.5 N·m)
Important Notes
Torque value is an average of the provided range (25-36 ft-lbs).

Brake Hydraulic System

1

Brake Hose Banjo Bolt

M10 x 1.0
Torque Specification
19.5 ft-lbs (26.5 N·m)
Important Notes
Torque value is an average of the provided range (16-23 ft-lbs).
2

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Torque value is an average of the provided range (10-15 ft-lbs).

Brake Pedal System

1

Brake Booster Mounting Bolts

M8 x 1.25
Torque Specification
16.5 ft-lbs (22.5 N·m)
Important Notes
Torque value is an average of the provided range (14-19 ft-lbs).
2

Brake Pedal Pivot Bolt

M10 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque value is an average of the provided range (18-22 ft-lbs).

Wheel Attachment System

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
90 ft-lbs (122 N·m)
Important Notes
Torque value is an average of the provided range (80-100 ft-lbs). Always follow a star pattern for tightening.

Drivetrain

Torque specifications for Drivetrain

Engine

1

Flywheel Bolts

M12 x 1.75
Torque Specification
94 ft-lbs (128 N·m)
Important Notes
Proper torque is essential to prevent damage to the flywheel, crankshaft, and surrounding components.
2

Main Bearing Bolts

M14 x 2.0
Torque Specification
56 ft-lbs (76 N·m)
Important Notes
Proper torque ensures the bearings are securely seated and the crankshaft is properly aligned.
3

Connecting Rod Nuts

M10 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Proper torque is necessary to prevent damage to the rods, bearings, and surrounding components.

Transmission

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Proper torque ensures the transmission is properly aligned and supported.
2

Transmission Oil Pan Bolts

M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Proper torque ensures the oil pan is properly sealed and the transmission is protected from contamination.
3

Transmission Drain and Fill Plugs

M10 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Proper torque ensures the plugs are securely seated and the transmission is protected from contamination.

Driveshaft and Axles

1

Drive Axle/Half Shaft Bolts

M14 x 2.0
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Proper torque is necessary to prevent damage to the axles, bearings, and surrounding components.
2

CV Joint/Axle Nut

M16 x 2.5
Torque Specification
165 ft-lbs (224 N·m)
Important Notes
Proper torque is essential to prevent damage to the CV joint, axle shaft, and surrounding components.
3

Propeller/Drive Shaft Bolts

M14 x 2.0
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Proper torque is necessary to prevent damage to the propeller shaft, bearings, and surrounding components.

Differential and Transfer Case

1

Differential Cover Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Proper torque ensures the cover is properly sealed and the differential is protected from contamination. **Estimated value**
2

Transfer Case Mounting Bolts

M12 x 1.75
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Proper torque ensures the transfer case is properly aligned and supported. **Estimated value**
3

Drive Shaft Center Bearing Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Proper torque ensures the bearing is properly seated and the drive shaft is properly supported. **Estimated value**

Electrical

Torque specifications for Electrical

Alternator And Starter Motor

1

Alternator Mounting Bolts

M12 x 1.5
Torque Specification
15.5 ft-lbs (21 N·m)
Important Notes
Estimated average value from the given range.
2

Starter Motor Mounting Bolts

M14 x 1.5
Torque Specification
31 ft-lbs (42 N·m)
Important Notes
Estimated average value from the given range.

Battery Terminals

1

Battery Terminal Nuts

M8 x 1.25
Torque Specification
60 in-lbs (6.75 N·m)
Important Notes
Estimated average value from the given range.

Ignition Coil And Accessories

1

Ignition Coil Mounting Bolts

M10 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated average value from the given range.
2

Fuel Pump Mounting Bolts

M10 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated average value from the given range.
3

Power Steering Pump Mounting Bolts

M10 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated average value from the given range.

Emissions Sensors

Torque specifications for Emissions_sensors

Oxygen Sensors

1

Oxygen Sensor Bolts

M12 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated value based on industry standards for oxygen sensor bolts.
2

Heated Oxygen Sensor (HO2S) Bolts

M10 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value based on industry standards for HO2S bolts.

Egr Valve

1

EGR Valve Bolts

M14 x 1.5
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Recommended torque value based on industry standards.

Egt Sensor

1

EGT Sensor Bolts

M10 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated value based on industry standards for EGT sensor bolts.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.25
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value is the midpoint of the provided range (25-33 ft-lbs).
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
16.5 ft-lbs (22.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (14-19 ft-lbs).

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
16.5 ft-lbs (22.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (14-19 ft-lbs).

Muffler

1

Muffler to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
16.5 ft-lbs (22.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (14-19 ft-lbs).

Heat Shield

1

Exhaust Heat Shield Bolts

M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (7-10 ft-lbs). Estimated bolt size based on typical heat shield applications.

Exhaust Hanger

1

Exhaust Hanger Bolts

M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Torque value is the midpoint of the provided range (10-15 ft-lbs). Estimated bolt size based on typical hanger applications.

Oxygen Sensor

1

Oxygen Sensor (O2 Sensor)

M18 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Torque value is the midpoint of the provided range (30-40 ft-lbs). Estimated bolt size based on typical O2 sensor applications.

Exhaust Flange

1

Exhaust Flange Bolts

M10 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque value is the midpoint of the provided range (18-22 ft-lbs). Estimated bolt size based on typical flange applications.

Fuel

Torque specifications for Fuel

Fuel Delivery

1

Fuel Rail Bolts

M8 x 1.25
Torque Specification
23.5 ft-lbs (32 N·m)
Important Notes
Torque value is an average of the specified range (22-25 ft-lbs).
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
15.5 ft-lbs (21 N·m)
Important Notes
Torque value is an average of the specified range (14-17 ft-lbs).
3

High-Pressure Fuel Line Fittings

M10 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque value is an average of the specified range (18-22 ft-lbs).

Fuel Storage

1

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque value is an average of the specified range (18-22 ft-lbs).
2

Fuel Filler Neck Bolts

M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Torque value is an average of the specified range (11-14 ft-lbs).
3

Fuel Tank Sender Unit Bolts

M6 x 1.0
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
Torque value is an average of the specified range (8-10 ft-lbs).

Fuel Filtration

1

Fuel Filter Bolt/Nut

M8 x 1.25
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Torque value is an average of the specified range (22-29 ft-lbs).

Fuel Pressure Regulation

1

Fuel Pressure Regulator Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque value is an average of the specified range (7-9 ft-lbs).

Fuel Line Securing

1

Fuel Line Clamp Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Torque value is an average of the specified range (6-8 ft-lbs).

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M8 x 1.25
Torque Specification
19.5 ft-lbs (26.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (17-22 ft-lbs / 23-30 Nm).
2

A/C Line Fittings

M10 x 1.25
Torque Specification
22.5 ft-lbs (30.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (18-27 ft-lbs / 24-37 Nm).

Evaporator

1

Evaporator Housing Bolts

M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (7-10 ft-lbs / 9-14 Nm).

Heater Core

1

Heater Core Inlet/Outlet Fittings

M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Torque value is the midpoint of the provided range (10-15 ft-lbs / 14-20 Nm).

Blower Motor

1

Blower Motor Mounting Bolts

M6 x 1.0
Torque Specification
7.5 ft-lbs (10 N·m)
Important Notes
Torque value is the midpoint of the provided range (6-9 ft-lbs / 8-12 Nm).

Condenser

1

Condenser Mounting Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (13.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (8-12 ft-lbs / 11-16 Nm).

Expansion Valve

1

Expansion Valve Bolts

M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Torque value is the midpoint of the provided range (7-10 ft-lbs / 9-14 Nm).

Suspension

Torque specifications for Suspension

Front Suspension

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
2

Control Arm Bolts

M16 x 1.5
Torque Specification
89 ft-lbs (121 N·m)
3

Upper Control Arm Bolts

M14 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Estimated value based on industry standards.
4

Lower Control Arm Bolts

M16 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Estimated value based on industry standards.
5

Ball Joint Nut

M12 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
6

Tie Rod End Nut

M10 x 1.5
Torque Specification
38 ft-lbs (52 N·m)

Rear Suspension

1

Stabilizer Bar Mounting Bolts

M12 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value based on industry standards.

Steering System

1

Steering Gear/Rack Bolts

M14 x 1.5
Torque Specification
79 ft-lbs (107 N·m)

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 are the torque specifications for the cylinder head bolts on a 2005 Infiniti fx35?

The cylinder head bolts on a 2005 Infiniti fx35 should be tightened to 80 ft-lbs (109 Nm) in three steps: 30 ft-lbs (41 Nm), 60 ft-lbs (81 Nm), and the final 80 ft-lbs (109 Nm). Refer to the Infiniti Technical Service Manual for detailed instructions.

Q2

What IS the lug nut torque specification for an Infiniti fx35?

The lug nuts on a 2003-2008 Infiniti fx35 should be tightened to 80 ft-lbs (109 Nm) using a torque wrench. Always follow the proper tightening sequence and use a star pattern to ensure even distribution of force.

Q3

Can I use a regular torque wrench to tighten bolts on my fx35?

No, it IS not recommended to use a regular torque wrench to tighten critical bolts on your 2003-2008 Infiniti fx35. Only use a high-quality, properly calibrated torque wrench to ensure accurate and consistent tightening. This will help prevent under or over-tightening, which can compromise the integrity of the components.

Q4

What are the torque specifications for the intake manifold bolts?

The intake manifold bolts on a 2003-2008 Infiniti fx35 should be tightened to 18 ft-lbs (24 Nm). Ensure that the bolts are properly torqued to prevent leaks and ensure optimal performance.

Q5

How often should I check the torque on my vehicle's bolts?

It IS generally not necessary to periodically check the torque on all bolts unless you have recently performed maintenance or repairs. However, it IS recommended to have the torque of critical bolts inspected by a qualified mechanic during routine maintenance or after major repairs.

Q6

Can I use an impact wrench to tighten suspension bolts?

No, it IS strongly advised against using an impact wrench to tighten suspension bolts on your 2003-2008 Infiniti fx35. Impact wrenches can apply excessive force, potentially damaging the bolts or compromising the suspension system. Always use a torque wrench to ensure proper tightening according to the specified torque values.

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 fx35.

  • 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

Applying Torque to Engine Components

Technical procedure for applying torque to various engine components, such as cylinder head bolts, camshafts, and intake manifold.

  • Clean all threads and mating surfaces before applying any torque.
  • Use new bolts or nuts whenever possible.
  • Tighten bolts in a star pattern, working from the center outward.
  • Use a torque wrench to achieve the specified torque values.
  • Double-check all torque values upon completion.
View full procedure

Replacing Suspension Components

Technical procedure for replacing suspension components, such as control arms, ball joints, and tie rods.

  • Raise the vehicle and support it safely on jack stands.
  • Remove the wheel and tire assembly.
  • Disconnect the sway bar link.
  • Remove the ball joint from the control arm.
  • Replace the worn component with a new one.
  • Tighten all bolts and nuts to the specified torque values.
  • Install the wheel and tire assembly.
View full procedure
Technical Service Bulletins

TSB No. NTB10-049: Revised Torque Specifications for Front Subframe Mounts

2010-08-01

Revised torque specifications for the front subframe mounts on 2003-2008 fx35 models. This TSB corrects a previous specification that was found to be insufficient.

2003-2008 fx35

Resolution: Replace the front subframe bolts with new bolts and tighten them to the revised torque specifications.

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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.
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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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