Lexus Vehicle Models LS 2018-present Torque Specifications
Lexus Vehicle Models LS 2018-present

Lexus Vehicle Models LS 2018-present Torque Specifications

Complete Lexus Vehicle Models LS 2018-present 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

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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 1.25
Torque Specification
1. 18 ft-lbs (25 N·m) 2. 90°
Important Notes
Follow the manufacturer's specified torque sequence for cylinder head bolts. Failure to do so may result in head gasket failure.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before tightening.

Crankshaft And Bearings

1

Main Bearing Bolts

M12 x 1.5
Torque Specification
48 ft-lbs (65 N·m)
Important Notes
Follow the manufacturer's specified torque sequence for main bearing bolts.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the connecting rod bearings are properly installed before tightening.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2

Camshaft Sprocket Bolt

M10 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the camshaft sprocket is properly aligned with the timing marks.

Accessory Drive

1

Alternator Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the alternator is properly aligned with the drive belt.
2

A/C Compressor Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the A/C compressor is properly aligned with the drive belt.

3.5l Twin Engine

Torque specifications for 3.5L-TWIN Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 18 ft-lbs (25 N·m) 2. 90°
Important Notes
Follow the manufacturer's specified torque sequence to ensure even clamping force.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 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
48 ft-lbs (65 N·m)
Important Notes
Ensure proper alignment of the main bearings before tightening.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of the connecting rod bearings before tightening.

Turbocharger System

1

Turbocharger Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of the turbocharger before tightening.
2

Turbocharger Oil Feed Line Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the oil feed line is properly aligned before tightening.

Intake And Exhaust

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
21 ft-lbs (28 N·m)
Important Notes
Ensure the intake manifold gasket is properly seated before tightening.
2

Exhaust Manifold Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the exhaust manifold gasket is properly seated before tightening.

Cooling System

1

Water Pump Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the water pump gasket is properly seated before tightening.
2

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the thermostat housing gasket is properly seated before tightening.

3.5l V6 Hybrid Engine

Torque specifications for 3.5L-V6-HYBRID Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.25
Torque Specification
1. 18 ft-lbs (25 N·m) 2. 90°
Important Notes
Follow the manufacturer's specified torque sequence for cylinder head bolts. Failure to do so may result in head gasket failure.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before tightening.

Crankshaft And Bearings

1

Main Bearing Bolts

M12 x 1.5
Torque Specification
48 ft-lbs (65 N·m)
Important Notes
Follow the manufacturer's specified torque sequence for main bearing bolts.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the connecting rod bearings are properly installed before tightening.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2

Camshaft Sprocket Bolt

M10 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the camshaft sprocket is properly aligned with the timing marks.

Accessory Drive

1

Alternator Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the alternator is properly aligned with the drive belt.
2

A/C Compressor Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the A/C compressor is properly aligned with the drive belt.

3.5l V6 Twin Turbo Engine

Torque specifications for 3.5L-V6-TWIN-TURBO Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 18 ft-lbs (25 N·m) 2. 90°
Important Notes
Follow the manufacturer's specified torque sequence to ensure even clamping force.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 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
48 ft-lbs (65 N·m)
Important Notes
Ensure proper alignment of the main bearings before tightening.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of the connecting rod bearings before tightening.

Turbocharger System

1

Turbocharger Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of the turbocharger before tightening.
2

Turbocharger Oil Feed Line Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the oil feed line is properly aligned before tightening.

Intake And Exhaust

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
21 ft-lbs (28 N·m)
Important Notes
Ensure the intake manifold gasket is properly seated before tightening.
2

Exhaust Manifold Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the exhaust manifold gasket is properly seated before tightening.

Cooling System

1

Water Pump Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the water pump gasket is properly seated before tightening.
2

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the thermostat housing gasket is properly seated before tightening.

Awr10 Transmission

Torque specifications for Awr10 Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
48 ft-lbs (65 N·m)

Transmission Oil System

1

Transmission Oil Pan Bolts

M8 x 1.25
Torque Specification
5.9 ft-lbs (8 N·m)
2

Transmission Drain and Fill Plugs

M14 x 1.5
Torque Specification
29 ft-lbs (39 N·m)

Transmission Case and Bellhousing

1

Transmission Case Bolts

M14 x 1.5
Torque Specification
1. 65 ft-lbs (88 N·m) 2. 80 ft-lbs (108 N·m)
Important Notes
Estimated torque value range. Consult manufacturer's documentation for correct value.
2

Transmission Bellhousing Bolts

M12 x 1.5
Torque Specification
1. 40 ft-lbs (54 N·m) 2. 50 ft-lbs (68 N·m)
Important Notes
Estimated torque value range. Consult manufacturer's documentation for correct value.

Torque Converter and Propeller/Drive Shaft

1

Torque Converter Bolts

M10 x 1.25
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 40 ft-lbs (54 N·m)
Important Notes
Estimated torque value range. Consult manufacturer's documentation for correct value.
2

Propeller/Drive Shaft Bolts

M12 x 1.5
Torque Specification
48 ft-lbs (65 N·m)

Transmission Cooler Lines

1

Transmission Cooler Line Fittings

M10 x 1.25
Torque Specification
1. 20 ft-lbs (27 N·m) 2. 30 ft-lbs (41 N·m)
Important Notes
Estimated torque value range. Consult manufacturer's documentation for correct value.

Body

Torque specifications for Body

Suspension and Steering

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
159 ft-lbs (216 N·m)
2

Control Arm Bolts

M12 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
3

Ball Joint Nut

M16 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
4

Tie Rod End Nut

M14 x 1.25
Torque Specification
36 ft-lbs (49 N·m)
5

Sway Bar Link Nut

M12 x 1.25
Torque Specification
29 ft-lbs (39 N·m)
6

Steering Gear/Rack Bolts

M14 x 1.5
Torque Specification
159 ft-lbs (216 N·m)

Body and Frame

1

Body Mount Bolts

M12 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Consult manufacturer or repair manual for accurate information.

Doors and Hoods

1

Door Hinge Bolts

M10 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Consult manufacturer or repair manual for accurate information.
2

Hood Hinge Bolts

M10 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Consult manufacturer or repair manual for accurate information.
3

Trunk Lid Hinge Bolts

M10 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Consult manufacturer or repair manual for accurate information.

Bumpers and Trim

1

Bumper Mounting Bolts

M12 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value. Consult manufacturer or repair manual for accurate information.

Brakes

Torque specifications for Brakes

Brake Caliper

1

Brake Caliper Bolts

M12 x 1.5
Torque Specification
79 ft-lbs (107 N·m)
Important Notes
Ensure proper alignment of the caliper during installation.
2

Brake Caliper Mounting Bracket Bolts

M12 x 1.5
Torque Specification
79 ft-lbs (107 N·m)
Important Notes
Ensure the bracket is properly seated before tightening.

Brake Rotor Drum

1

Brake Disc/Drum Retaining Bolts

M8 x 1.25
Torque Specification
42 ft-lbs (57 N·m)
Important Notes
Ensure the rotor or drum is properly seated on the hub.

Brake Hydraulics

1

Brake Hose Banjo Bolt

M10 x 1.0
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure the sealing washers are properly seated.
2

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the master cylinder is properly aligned with the brake booster.
3

Brake Booster Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the booster is properly seated against the firewall.

Brake Pedal

1

Brake Pedal Assembly Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the pedal assembly is properly aligned with the brake booster pushrod.

Wheel

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
76 ft-lbs (103 N·m)
Important Notes
Torque the lug nuts in a star pattern to ensure even clamping force.

Drivetrain

Torque specifications for Drivetrain

Engine and Transmission Interface

1

Engine Block to Transmission Bellhousing Bolts

M14 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Estimated value based on industry standards.

Transmission Mounting and Support

1

Transmission Mounting Bolts

M12 x 1.25
Torque Specification
48 ft-lbs (65 N·m)
2

Transmission Crossmember Bolts

M14 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Estimated value based on industry standards.

Transmission Oil Pan and Drain/Fill Plug

1

Transmission Oil Pan Bolts

M8 x 1.25
Torque Specification
71 in-lbs (8 N·m)
2

Transmission Drain/Fill Plug

M12 x 1.25
Torque Specification
48 ft-lbs (65 N·m)

Drive Axle/Half Shaft and CV Joint

1

Drive Axle/Half Shaft Bolts

M16 x 1.5
Torque Specification
159 ft-lbs (216 N·m)
2

CV Joint/Axle Nut

M16 x 1.5
Torque Specification
159 ft-lbs (216 N·m)
3

Drive Axle/Half Shaft Nut (inner)

M14 x 1.5
Torque Specification
100 ft-lbs (136 N·m)
Important Notes
Estimated value based on industry standards.

Differential and Transfer Case

1

Differential Cover Bolts

M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on industry standards.
2

Differential Drain/Fill Plug

M12 x 1.25
Torque Specification
48 ft-lbs (65 N·m)
3

Transfer Case Mounting Bolts

M14 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Estimated value based on industry standards.
4

Transfer Case Drain/Fill Plug

M12 x 1.25
Torque Specification
48 ft-lbs (65 N·m)

Flywheel and Propeller/Drive Shaft

1

Flywheel Bolts

M14 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
2

Propeller/Drive Shaft Bolts

M12 x 1.25
Torque Specification
48 ft-lbs (65 N·m)

Electrical

Torque specifications for Electrical

Alternator and Starter Motor

1

Alternator Mounting Bolts

M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
2

Starter Motor Mounting Bolts

M14 x 1.5
Torque Specification
29 ft-lbs (39 N·m)

Battery and Electrical Connectors

1

Battery Terminal Nuts

M8 x 1.25
Torque Specification
6.6 ft-lbs (6 N·m)
Important Notes
Note: The torque value is converted from 53 in-lbs to ft-lbs and Nm.
2

Ignition Coil Mounting Bolts

M10 x 1.5
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 12 ft-lbs (16 N·m)
Important Notes
Note: The recommended torque values are based on general industry guidelines and may vary depending on the specific application and manufacturer's recommendations.
3

Fuel Pump Electrical Connector Bolts

M6 x 1.0
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 7 ft-lbs (10 N·m)
Important Notes
Note: The recommended torque values are based on general industry guidelines and may vary depending on the specific application and manufacturer's recommendations.
4

A/C Compressor Electrical Connector Bolts

M6 x 1.0
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 7 ft-lbs (10 N·m)
Important Notes
Note: The recommended torque values are based on general industry guidelines and may vary depending on the specific application and manufacturer's recommendations.

Emissions Sensors

Torque specifications for Emissions_sensors

EGR System

1

EGR Valve Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Proper torque ensures a secure connection and prevents leaks.

Exhaust Manifold And Headers

1

Exhaust Manifold/Headers Bolts

M12 x 1.75
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque ensures a secure connection and prevents leaks.
2

Exhaust Manifold/Headers to Cylinder Head Bolts

M12 x 1.75
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque ensures a secure connection and prevents leaks.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque ensures a secure connection and prevents leaks.

Oxygen Sensors

1

Oxygen Sensor Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value. Proper torque ensures a secure connection and prevents damage to the sensor.
2

Heated Oxygen Sensor (HO2S) Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value. Proper torque ensures a secure connection and prevents damage to the sensor.
3

NOx Sensor Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value. Proper torque ensures a secure connection and prevents damage to the sensor.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.

Exhaust Pipe

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure gaskets are properly seated before tightening.
2

Catalytic Converter to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the catalytic converter is properly aligned before tightening.
3

Muffler to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the muffler is properly aligned before tightening.

Heat Shield

1

Exhaust Heat Shield Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value based on typical heat shield bolt sizes. Avoid over-tightening to prevent damage.

Oxygen Sensor

1

Oxygen Sensor Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the oxygen sensor is properly seated before tightening.

Exhaust Flange

1

Exhaust Flange Bolts (Downpipe to Midpipe)

M10 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.

Exhaust Hanger

1

Exhaust Hanger Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the exhaust hanger is properly aligned before tightening.

Hvac

Torque specifications for Hvac

A/C Compressor

1

A/C Compressor Mounting Bolts

M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque ensures proper mounting and alignment, preventing compressor vibration, noise, and premature failure.
2

A/C Compressor Clutch Bolts

M10 x 1.25
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Estimated value based on general practices and industry standards. Consult manufacturer's documentation for specific torque values and locations.

A/C Condenser

1

Condenser Mounting Bolts

M14 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Estimated value based on general practices and industry standards. Consult manufacturer's documentation for specific torque values and locations.
2

A/C Condenser Fan Mounting Screws

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on general practices and industry standards. Consult manufacturer's documentation for specific torque values and locations.

A/C Evaporator

1

Evaporator Mounting Bolts

M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on general practices and industry standards. Consult manufacturer's documentation for specific torque values and locations.

A/C Lines and Fittings

1

A/C Line Fittings

M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque ensures a leak-free seal and prevents refrigerant leaks.

Suspension

Torque specifications for Suspension

Front Suspension

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
159 ft-lbs (216 N·m)
Important Notes
Secure the strut/shock absorber to the vehicle's frame.
2

Control Arm Bolts

M12 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Connect the control arms to the frame and suspension components.
3

Upper Control Arm Bushing Bolts

M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Secure the upper control arm bushings to the control arm.
4

Lower Control Arm Bushing Bolts

M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Secure the lower control arm bushings to the control arm.

Steering System

1

Steering Gear/Rack Bolts

M14 x 1.5
Torque Specification
159 ft-lbs (216 N·m)
Important Notes
Secure the steering gear/rack to the vehicle's frame.
2

Tie Rod End Nut

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

Stabilizer Bar

1

Stabilizer Bar Mounting Bolts

M12 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Secure the stabilizer bar to the vehicle's frame.
2

Sway Bar Link Nut

M10 x 1.25
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Secure the sway bar link to the sway bar and control arm.

Coil Spring

1

Coil Spring Mounting Bolts

M12 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Secure the coil spring to the strut/shock absorber.

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What IS the torque specification for the engine oil drain plug on a 2018 Lexus LS?

29 ft-lbs (40 Nm)

Q2

What type of torque wrench should I use for critical suspension bolts?

Use a calibrated digital or click-type torque wrench that meets or exceeds industry standards.

Q3

How do I properly torque a bolt to its specified value?

Clean the bolt and threads, apply a small amount of anti-seize lubricant, and gradually tighten the bolt to the specified torque using a calibrated torque wrench.

Q4

What are the consequences of over-tightening bolts?

Over-tightening bolts can damage threads, strip heads, cause component failure, and compromise vehicle safety.

Q5

How often should I check torque specifications for critical components?

Refer to the vehicle maintenance schedule for recommended torque check intervals.

Q6

What IS the torque specification for the lug nuts on a 2018 Lexus LS?

100 ft-lbs (136 Nm)

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 LS.

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

Torque Adapter for Ratchet

Provides precise torque control while using a standard ratchet. Ensure the adapter IS compatible with your ratchet and torque wrench.

  • Easy to attach and remove
  • Range of torque settings
  • Compact design
Learn more

Torque Multiplier

Increases the torque output of your wrench, making it easier to tighten stubborn bolts. Choose a multiplier with the appropriate torque range.

  • Leverage effect for increased torque
  • Minimizes strain on user
  • Durable construction
Learn more
Service Procedures

Engine Oil Drain Plug

Tightening procedure for the engine oil drain plug on the Lexus LS.

  • Clean the drain plug and washer surface
  • Apply a new washer to the drain plug
  • Tighten the drain plug to 25 Nm (18.4 ft-lb)
View full procedure

Cylinder Head Cover

Step-by-step guide for tightening cylinder head cover bolts on the Lexus LS.

  • Clean the bolt threads and gasket surfaces
  • Lubricate the bolt threads with engine oil
  • Tighten the bolts in sequence to 10 Nm (7.4 ft-lb), then to 20 Nm (14.8 ft-lb)
View full procedure

Spark Plugs

Procedure for replacing and tightening spark plugs on the Lexus LS.

  • Remove the old spark plugs
  • Apply anti-seize compound to the new spark plugs
  • Tighten the spark plugs to 25 Nm (18.4 ft-lb)
View full procedure
Technical Service Bulletins

Bolt Torque Specifications Update

2020-06-15

Updated torque specifications for various components on the 2018-Present Lexus LS.

2018 LS 2019 LS 2020 LS 2021 LS 2022 LS

Resolution: Refer to the updated torque specifications in the technical bulletin for accurate assembly.

Recall: Suspension Bolt Issue

2021-10-01

Safety recall regarding incorrect torque specifications for suspension bolts, which may compromise vehicle stability.

2020-2022 LS

Resolution: Contact the authorized Lexus dealership for immediate inspection and repair.

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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.
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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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