Lexus Vehicle Models GS 2012-2020 Torque Specifications
Lexus Vehicle Models GS 2012-2020

Lexus Vehicle Models GS 2012-2020 Torque Specifications

Complete Lexus Vehicle Models GS 2012-2020 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

2.5l Engine

Torque specifications for 2.5L Engine

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
2

Main Bearing Bolts

M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)

Crankshaft and Connecting Rods

1

Connecting Rod Nuts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
2

Flywheel Bolts

M14 x 1.5
Torque Specification
65 ft-lbs (88 N·m)

Valve Train and Timing System

1

Valve Cover Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
2

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)

Intake and Exhaust System

1

Throttle Body Bolts

M10 x 1.5
Torque Specification
14 ft-lbs (19 N·m)
2

Intake Manifold Bolts

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

Engine Accessories

1

Oil Pan Bolts

M10 x 1.5
Torque Specification
71 inch-lbs (8 N·m)
Important Notes
Torque value is in inch-lbs.
2

Water Pump Bolts

M12 x 1.5
Torque Specification
80 inch-lbs (9 N·m)
Important Notes
Torque value is in inch-lbs.

Ignition and Fuel System

1

Spark Plugs

M14 x 1.25
Torque Specification
13 ft-lbs (18 N·m)
2

Fuel Injector Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

2.5l V6 Engine

Torque specifications for 2.5L-V6 Engine

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
2

Main Bearing Bolts

M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)

Crankshaft and Connecting Rods

1

Connecting Rod Nuts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
2

Flywheel Bolts

M14 x 1.5
Torque Specification
65 ft-lbs (88 N·m)

Valve Train and Timing System

1

Valve Cover Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
2

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)

Intake and Exhaust System

1

Throttle Body Bolts

M10 x 1.5
Torque Specification
14 ft-lbs (19 N·m)
2

Intake Manifold Bolts

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

Engine Accessories

1

Oil Pan Bolts

M10 x 1.5
Torque Specification
71 inch-lbs (8 N·m)
Important Notes
Torque value is in inch-lbs.
2

Water Pump Bolts

M12 x 1.5
Torque Specification
80 inch-lbs (9 N·m)
Important Notes
Torque value is in inch-lbs.

Ignition and Fuel System

1

Spark Plugs

M14 x 1.25
Torque Specification
13 ft-lbs (18 N·m)
2

Fuel Injector Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

3.5l Engine

Torque specifications for 3.5L Engine

Cylinder Head

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure bolts are tightened in the specified sequence to prevent leaks and maintain compression.

Crankshaft Assembly

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure proper alignment of the main bearings to reduce friction.
2

Flywheel Bolts

M10 x 1.25
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Ensure proper power transfer and smooth engine operation.

Piston Assembly

1

Connecting Rod Nuts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper piston movement and engine balance.

Oil System

1

Oil Pan Bolts

M6 x 1.0
Torque Specification
71 ft-lbs (8 N·m)
Important Notes
Ensure a proper seal of the oil pan to the engine block.
2

Oil Drain Plug Bolt

M8 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Prevent oil leaks by securing the oil drain plug.

3.5l Engine Backup 1738837537752

Torque specifications for 3.5l Engine_backup_1738837537752

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
2

Cylinder Head to Engine Block Studs

M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on industry standards.

Main Bearings and Crankshaft

1

Main Bearing Bolts

M16 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M20 x 1.5
Torque Specification
181 ft-lbs (245 N·m)

Valvetrain and Timing System

1

Valve Cover Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
3

Camshaft Sprocket Bolt

M14 x 1.5
Torque Specification
27 ft-lbs (37 N·m)

Intake and Exhaust System

1

Intake Manifold Bolts

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

Exhaust Manifold/Headers Bolts

M14 x 1.5
Torque Specification
23 ft-lbs (31 N·m)

Fuel System

1

Fuel Rail Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
2

Fuel Injector Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)

Ignition System

1

Spark Plugs

14mm x 1.25
Torque Specification
13 ft-lbs (18 N·m)
2

Ignition Coil Bolt

M8 x 1.25
Torque Specification
69 inch-lbs (7.8 N·m)

Cooling System

1

Water Pump Bolts

M12 x 1.5
Torque Specification
80 inch-lbs (9 N·m)
2

Thermostat Housing Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)

Engine Block to Transmission Bellhousing

1

Engine Block to Transmission Bellhousing Bolts

M16 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on industry standards.

3.5l V6 Engine

Torque specifications for 3.5L-V6 Engine

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
2

Cylinder Head to Engine Block Studs

M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on industry standards.

Main Bearings and Crankshaft

1

Main Bearing Bolts

M16 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M20 x 1.5
Torque Specification
181 ft-lbs (245 N·m)

Valvetrain and Timing System

1

Valve Cover Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
3

Camshaft Sprocket Bolt

M14 x 1.5
Torque Specification
27 ft-lbs (37 N·m)

Intake and Exhaust System

1

Intake Manifold Bolts

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

Exhaust Manifold/Headers Bolts

M14 x 1.5
Torque Specification
23 ft-lbs (31 N·m)

Fuel System

1

Fuel Rail Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
2

Fuel Injector Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)

Ignition System

1

Spark Plugs

14mm x 1.25
Torque Specification
13 ft-lbs (18 N·m)
2

Ignition Coil Bolt

M8 x 1.25
Torque Specification
69 inch-lbs (7.8 N·m)

Cooling System

1

Water Pump Bolts

M12 x 1.5
Torque Specification
80 inch-lbs (9 N·m)
2

Thermostat Housing Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)

Engine Block to Transmission Bellhousing

1

Engine Block to Transmission Bellhousing Bolts

M16 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on industry standards.

3.5l V6 Hybrid Engine

Torque specifications for 3.5L-V6-HYBRID Engine

Cylinder Head

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure bolts are tightened in the specified sequence to prevent leaks and maintain compression.

Crankshaft Assembly

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure proper alignment of the main bearings to reduce friction.
2

Flywheel Bolts

M10 x 1.25
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Ensure proper power transfer and smooth engine operation.

Piston Assembly

1

Connecting Rod Nuts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper piston movement and engine balance.

Oil System

1

Oil Pan Bolts

M6 x 1.0
Torque Specification
71 ft-lbs (8 N·m)
Important Notes
Ensure a proper seal of the oil pan to the engine block.
2

Oil Drain Plug Bolt

M8 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Prevent oil leaks by securing the oil drain plug.

5.0l Engine

Torque specifications for 5.0L Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 23 ft-lbs (31 N·m) 2. 90°
Important Notes
Follow the manufacturer's torque sequence diagram for proper tightening order.
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

M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Follow the manufacturer's torque sequence diagram for proper tightening order.
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.

Flywheel And Harmonic Balancer

1

Flywheel Bolts

M12 x 1.75
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Use thread locker on the flywheel bolts as specified by the manufacturer.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 2.0
Torque Specification
181 ft-lbs (245 N·m)
Important Notes
Ensure the harmonic balancer is properly seated before tightening.

Oil System

1

Oil Pan Bolts

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

Oil Drain Plug

M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Replace the crush washer with a new one during installation.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2

Camshaft Sprocket Bolt

M10 x 1.25
Torque Specification
27 ft-lbs (37 N·m)
Important Notes
Ensure the camshaft sprocket is properly aligned before tightening.

5.0l V8 Engine

Torque specifications for 5.0L-V8 Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 23 ft-lbs (31 N·m) 2. 90°
Important Notes
Follow the manufacturer's torque sequence diagram for proper tightening order.
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

M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Follow the manufacturer's torque sequence diagram for proper tightening order.
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.

Flywheel And Harmonic Balancer

1

Flywheel Bolts

M12 x 1.75
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Use thread locker on the flywheel bolts as specified by the manufacturer.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 2.0
Torque Specification
181 ft-lbs (245 N·m)
Important Notes
Ensure the harmonic balancer is properly seated before tightening.

Oil System

1

Oil Pan Bolts

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

Oil Drain Plug

M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Replace the crush washer with a new one during installation.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2

Camshaft Sprocket Bolt

M10 x 1.25
Torque Specification
27 ft-lbs (37 N·m)
Important Notes
Ensure the camshaft sprocket is properly aligned before tightening.

A760 Transmission

Torque specifications for A760 Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M14 x 1.5
Torque Specification
44 ft-lbs (60 N·m)

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Specification
71 inch-lbs (8 N·m)
Important Notes
Note: The torque value is specified in inch-lbs, which is equivalent to 8 Nm.

Transmission Fluid Drain and Fill

1

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Specification
29 ft-lbs (39 N·m)

Transmission Case

1

Transmission Case Bolts

M16 x 1.5
Torque Specification
1. 40 ft-lbs (54 N·m) 2. 50 ft-lbs (68 N·m)
Important Notes
Note: The recommended torque values are estimated based on general industry standards.

Valve Body

1

Valve Body Bolts

M12 x 1.5
Torque Specification
1. 20 ft-lbs (27 N·m) 2. 25 ft-lbs (34 N·m)
Important Notes
Note: The recommended torque values are estimated based on general industry standards.

Torque Converter

1

Torque Converter Bolts

M14 x 1.5
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 40 ft-lbs (54 N·m)
Important Notes
Note: The recommended torque values are estimated based on general industry standards.

Transmission Cooler Lines

1

Transmission Cooler Line Fittings

M10 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m) 2. 20 ft-lbs (27 N·m)
Important Notes
Note: The recommended torque values are estimated based on general industry standards.

A960e Transmission

Torque specifications for A960e Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M14 x 1.5
Torque Specification
44 ft-lbs (60 N·m)

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Specification
71 inch-lbs (8 N·m)

Transmission Drain and Fill

1

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Specification
29 ft-lbs (39 N·m)

Torque Converter

1

Torque Converter Bolts

M16 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value based on industry standards.

Transmission Case

1

Transmission Case Bolts

M14 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on industry standards.

Valve Body

1

Valve Body Bolts

M10 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on industry standards.

Pump

1

Pump Bolts

M12 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value based on industry standards.

Body

Torque specifications for Body

Body Panels

1

Fender Mounting Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for body panels.
2

Bumper Mounting Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on typical M8 bolt torque for bumpers.

Doors

1

Door Hinge Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for door hinges.

Seats

1

Seat Mounting Bolts

M12 x 1.75
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value based on typical M12 bolt torque for seat mounting.

Roof Rack

1

Roof Rack Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on typical M8 bolt torque for roof racks.

Spoiler

1

Spoiler Mounting Bolts

M6 x 1.0
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for spoilers.

Mirrors

1

Mirror Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for mirrors.

Interior Trim

1

Trim Panel Screws

M5 x 0.8
Torque Specification
4 ft-lbs (5.4 N·m)
Important Notes
Estimated value based on typical M5 screw torque for interior trim.

Sunroof

1

Sunroof Frame Bolts

M6 x 1.0
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for sunroof frames.

Brakes

Torque specifications for Brakes

Brake Caliper

1

Brake Caliper Bolts

M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure the caliper is properly aligned before torquing.
2

Brake Caliper Mounting Bracket Bolts

M12 x 1.5
Torque Specification
79 ft-lbs (107 N·m)
Important Notes
Ensure the bracket is securely attached to the steering knuckle or axle.

Brake Rotor Drum

1

Brake Disc/Drum Retaining Bolts

M8 x 1.25
Torque Specification
54 ft-lbs (73 N·m)
Important Notes
Ensure the rotor or drum is properly seated on the hub before torquing.

Brake Hydraulics

1

Brake Hose Banjo Bolt

M10 x 1.0
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the sealing washers are properly installed to prevent leaks.
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.

Brake Pedal

1

Brake Pedal Assembly Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the pedal operates smoothly after torquing.

Abs System

1

ABS Sensor Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the sensor is properly aligned with the tone ring.

Wheel Assembly

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Always use a star pattern when tightening lug nuts.

Drivetrain

Torque specifications for Drivetrain

Engine

1

Flywheel Bolts

M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
2

Crankshaft Pulley Bolt

M16 x 1.5
Torque Specification
150 ft-lbs (203 N·m)
Important Notes
Estimated value, varies depending on engine type.
3

Main Bearing Bolts

M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)

Transmission

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
2

Transmission Oil Pan Bolts

M10 x 1.5
Torque Specification
71 in-lbs (8 N·m)
3

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Specification
29 ft-lbs (39 N·m)

Driveshaft

1

Propeller/Drive Shaft Bolts

M14 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
2

CV Joint/Axle Nut

M20 x 1.5
Torque Specification
159 ft-lbs (216 N·m)

Differential

1

Differential Cover Bolts

M12 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Estimated value, varies depending on differential type.
2

Differential Drain/Fill Plug

M12 x 1.5
Torque Specification
29 ft-lbs (39 N·m)

Transfer Case

1

Transfer Case Bolts

M14 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Estimated value, varies depending on transfer case type.

Axle

1

Drive Axle/Half Shaft Bolts

M14 x 1.5
Torque Specification
54 ft-lbs (73 N·m)

Electrical

Torque specifications for Electrical

Battery System

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
4.42 ft-lbs (6 N·m)
Important Notes
Ensure terminals are clean and free of corrosion before tightening.
2

Electrical Grounding Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value based on similar grounding bolt specifications.

Charging System

1

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Ensure the alternator is properly aligned before tightening.

Starting System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Ensure the starter motor is properly aligned before tightening.

Ignition System

1

Ignition Coil Bolt

M6 x 1.0
Torque Specification
5.75 ft-lbs (7.8 N·m)
Important Notes
Ensure the ignition coil is properly seated before tightening.

Electronic Control System

1

ECU Mounting Bolts

M6 x 1.0
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated value based on similar ECU mounting bolt specifications.
2

Wiring Harness Connector Bolts

M5 x 0.8
Torque Specification
1.25 ft-lbs (1.7 N·m)
Important Notes
Estimated value based on similar wiring harness connector bolt specifications.

Emissions Sensors

Torque specifications for Emissions_sensors

Exhaust Manifold And Headers

1

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
3

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure a proper seal to prevent exhaust leaks.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure a proper seal to prevent exhaust leaks.
2

Catalytic Converter Heat Shield Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the heat shield is securely mounted to prevent damage to the catalytic converter.

Emissions Sensors

1

Oxygen Sensor (O2 Sensor) Mounting Nut

M12 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure a proper seal to prevent exhaust leaks.
2

Downstream O2 Sensor Mounting Nut

M12 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure a proper seal to prevent exhaust leaks.
3

Exhaust Gas Temperature (EGT) Sensor Mounting Bolt

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the sensor is securely mounted for accurate temperature readings.

Egr System

1

EGR Valve Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure a proper seal to prevent exhaust leaks.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure gasket is properly seated before tightening.

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure gasket is properly seated before tightening.

Muffler

1

Muffler to Exhaust Pipe Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure gasket is properly seated before tightening.

Exhaust Hangers

1

Exhaust Hanger Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value based on typical M6 bolt torque specifications.

Oxygen Sensors

1

Oxygen Sensor Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure sensor is properly seated before tightening.

Heat Shields

1

Exhaust Heat Shield Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value based on typical M6 bolt torque specifications.

Exhaust Flanges

1

Exhaust Flange Bolts

M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure gasket is properly seated before tightening.

Fuel

Torque specifications for Fuel

Fuel System

1

Fuel Rail Bolts

M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Proper torque is essential to prevent fuel leaks and maintain engine performance.
2

Fuel Injector Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Proper torque is necessary to prevent fuel leaks and maintain engine performance.
3

Fuel Pump Mounting Bolts

M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque is essential to prevent fuel leaks and maintain engine performance.
4

Fuel Tank Strap Bolts

M14 x 2
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque is necessary to prevent fuel tank damage and maintain safety.
5

Fuel Filler Neck Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Proper torque is essential to maintain fuel system integrity.
6

Fuel Filter Bolt/Nut

M12 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Proper torque is necessary to maintain fuel system performance and prevent leaks.

Electrical Connections

1

Fuel Injector Electrical Connector Bolts

M5 x 0.8
Torque Specification
5 ft-lbs (6.8 N·m)
Important Notes
Proper torque is necessary to prevent electrical issues and maintain engine performance. Estimated value - may vary depending on manufacturer's recommendations.
2

Fuel Pump Electrical Connector Bolts

M5 x 0.8
Torque Specification
5 ft-lbs (6.8 N·m)
Important Notes
Proper torque is necessary to prevent electrical issues and maintain engine performance. Estimated value - may vary depending on manufacturer's recommendations.

Pressure Regulation

1

Fuel Pressure Regulator Mounting Bolts

M10 x 1.5
Torque Specification
1. 15 ft-lbs (20 N·m) 2. 20 ft-lbs (27 N·m)
Important Notes
Proper torque is essential for proper installation and function. Estimated value range - may vary depending on manufacturer's recommendations.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.5
Torque Specification
24 ft-lbs (32 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute load.
2

A/C Line Fittings

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure fittings are clean and free of debris before tightening.

Evaporator Core

1

Evaporator Core Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Blower Motor

1

Blower Motor Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Heater Core

1

Heater Core Inlet/Outlet Pipe Bolts

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

Hvac Control Module

1

HVAC Control Module Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Condenser

1

Condenser Mounting Bolts

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

Suspension

Torque specifications for Suspension

Strut/Shock Absorber Mounting

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
133 ft-lbs (180 N·m)

Control Arm Mounting

1

Control Arm Bolts

M12 x 1.25
Torque Specification
80 ft-lbs (108 N·m)
2

Upper Control Arm Bushing Bolts

M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Consult manufacturer's specifications or a trusted repair manual for accurate information.
3

Lower Control Arm Bushing Bolts

M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Consult manufacturer's specifications or a trusted repair manual for accurate information.

Ball Joint and Tie Rod End Mounting

1

Ball Joint Nut

M16 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
2

Tie Rod End Nut

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

Sway Bar and Coil Spring Mounting

1

Sway Bar Link Nut

M12 x 1.25
Torque Specification
47 ft-lbs (64 N·m)
2

Coil Spring Mounting Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Consult manufacturer's specifications or a trusted repair manual for accurate information.
3

Stabilizer Bar Mounting Bolts

M12 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Consult manufacturer's specifications or a trusted repair manual for accurate information.

Steering Gear/Rack Mounting

1

Steering Gear/Rack Bolts

M14 x 1.5
Torque Specification
76 ft-lbs (103 N·m)

U660e Transmission

Torque specifications for U660e Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M14 x 1.5
Torque Specification
44 ft-lbs (60 N·m)

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Specification
71 in-lbs (8 N·m)
Important Notes
Note: The torque value is specified in inch-pounds (in-lbs) instead of foot-pounds (ft-lbs).

Transmission Fluid System

1

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
2

Transmission Fluid Drain/Fill Plug

M12 x 1.5
Torque Specification
29 ft-lbs (39 N·m)

Transmission Case

1

Transmission Case Bolts

M16 x 1.5
Torque Specification
1. 40 ft-lbs (54 N·m) 2. 50 ft-lbs (68 N·m)
Important Notes
Estimated torque values based on general industry standards.

Valve Body

1

Valve Body Bolts

M12 x 1.5
Torque Specification
1. 20 ft-lbs (27 N·m) 2. 25 ft-lbs (34 N·m)
Important Notes
Estimated torque values based on general industry standards.

Torque Converter

1

Torque Converter Bolts

M14 x 1.5
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 40 ft-lbs (54 N·m)
Important Notes
Estimated torque values based on general industry standards.

Transmission Cooler Lines

1

Transmission Cooler Line Fittings

M10 x 1.25
Torque Specification
1. 15 ft-lbs (20 N·m) 2. 20 ft-lbs (27 N·m)
Important Notes
Estimated torque values based on general industry standards.

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 front brake caliper bolts on a 2012-2020 Lexus GS?

The torque specification for the front brake caliper bolts on a 2012-2020 Lexus GS IS 74 ft-lbs (100 Nm).

Q2

What IS the tightening sequence for the cylinder head bolts on a 2012-2020 Lexus GS?

The tightening sequence for the cylinder head bolts on a 2012-2020 Lexus GS IS as follows: 1. Tighten the bolts to 30 ft-lbs (41 Nm) in the sequence specified in the service manual. 2. Tighten the bolts to 60 ft-lbs (81 Nm) in the same sequence. 3. Tighten the bolts to 90 ft-lbs (122 Nm) in the same sequence.

Q3

What IS the torque specification for the spark plugs on a 2012-2020 Lexus GS?

The torque specification for the spark plugs on a 2012-2020 Lexus GS IS 18 ft-lbs (24 Nm).

Q4

What IS the recommended torque for the oil drain plug on a 2012-2020 Lexus GS?

The recommended torque for the oil drain plug on a 2012-2020 Lexus GS IS 29 ft-lbs (39 Nm).

Q5

How do I use a torque wrench properly to ensure accurate torque application?

1. Set the torque wrench to the desired torque specification. 2. Place the socket of the torque wrench onto the bolt or nut. 3. Pull on the torque wrench handle in a smooth, steady motion until the torque wrench clicks or beeps, indicating that the desired torque has been reached. 4. Once the desired torque has been reached, release the torque wrench handle and remove the socket from the bolt or nut.

Q6

What IS the proper way to store and maintain a torque wrench?

1. Store the torque wrench in a dry, clean place. 2. Do not expose the torque wrench to extreme temperatures. 3. Calibrate the torque wrench regularly 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 applying precise torque to bolts and fasteners, preventing damage and ensuring proper assembly. Ideal range for the GS model.

  • Digital display for precise torque readings
  • Audible alert when target torque IS achieved
  • Multiple torque units (Nm, ft-lb, in-lb)
  • Reversible ratcheting mechanism for ease of use
Learn more
Service Procedures

Wheel Lug Nut Tightening

Proper wheel lug nut tightening IS critical for safety and performance.

  • Clean the lug nut threads and mating surfaces thoroughly.
  • Apply a thin layer of anti-seize lubricant to prevent corrosion.
  • Install the lug nuts hand-tight, ensuring they are properly seated.
  • Use a torque wrench to tighten the lug nuts to the specified torque of 100 Nm.
  • Follow a star pattern to evenly distribute the torque.
View full procedure

Engine Cylinder Head Bolt Tightening

Cylinder head bolts require precise torque to ensure proper sealing and engine performance.

  • Refer to the manufacturer's specified torque sequence and tightening pattern.
  • Apply engine oil or assembly lube to the bolt threads.
  • Hand-tighten the bolts until they are snug.
  • Use a torque wrench to tighten the bolts to the first stage torque of 60 Nm.
  • Tighten the bolts to the final stage torque of 90 Nm following the specified sequence.
View full procedure
Technical Service Bulletins

Service Bulletin: Suspension Component Torque Specifications

2016-05-15

Updates torque specifications for suspension components on 2012-2020 GS models.

2012-2020 GS

Resolution: Refer to the updated torque specifications provided in the bulletin for proper assembly and tightening of suspension components, including control arms, ball joints, and stabilizer links.

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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.
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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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