Mercedes-Benz Vehicle Models Mercedes G-Class 2018-present Torque Specifications
Mercedes-Benz Vehicle Models Mercedes G-Class 2018-present

Mercedes-Benz Vehicle Models Mercedes G-Class 2018-present Torque Specifications

Complete Mercedes-Benz Vehicle Models Mercedes G-Class 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

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

4.0l Engine

Torque specifications for 4.0L Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 15 ft-lbs (20 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 (9 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
55 ft-lbs (75 N·m)
Important Notes
Follow the manufacturer's specified torque sequence for main bearing bolts.
2

Connecting Rod Nuts

M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure proper alignment of connecting rods before tightening.

Timing System

1

Camshaft Sprocket Bolt

M14 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Ensure the camshaft is properly aligned before tightening.
2

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure proper tension on the timing belt/chain before tightening.

Intake And Exhaust

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Follow the manufacturer's specified torque sequence for intake manifold bolts.
2

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 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
15 ft-lbs (20 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 (9 N·m)
Important Notes
Ensure the thermostat housing gasket is properly seated before tightening.

4.0l V8 Engine

Torque specifications for 4.0L-V8 Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 15 ft-lbs (20 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 (9 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
55 ft-lbs (75 N·m)
Important Notes
Follow the manufacturer's specified torque sequence for main bearing bolts.
2

Connecting Rod Nuts

M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure proper alignment of connecting rods before tightening.

Timing System

1

Camshaft Sprocket Bolt

M14 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Ensure the camshaft is properly aligned before tightening.
2

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure proper tension on the timing belt/chain before tightening.

Intake And Exhaust

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Follow the manufacturer's specified torque sequence for intake manifold bolts.
2

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 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
15 ft-lbs (20 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 (9 N·m)
Important Notes
Ensure the thermostat housing gasket is properly seated before tightening.

9g Tronic Transmission

Torque specifications for 9g Tronic Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures the transmission is securely attached and functioning smoothly.

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Proper torque ensures a leak-tight seal and prevents damage to the transmission.

Transmission Fluid Drain and Fill

1

Transmission Drain and Fill Plugs

M14 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Proper torque ensures a secure seal and prevents leaks.
2

Transmission Fluid Drain/Fill Plug

M14 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Similar to the above, this plug is used for draining and filling the transmission fluid.

Bellhousing and Valve Body

1

9G-Tronic Transmission Bellhousing Bolts

M16 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Proper torque ensures a secure connection and prevents leaks or damage to the transmission. (Estimated value)
2

9G-Tronic Transmission Valve Body Bolts

M10 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Proper torque ensures proper hydraulic pressure and transmission function. (Estimated value)

Transmission Filter and Cooler Lines

1

9G-Tronic Transmission Filter Bolts

M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Proper torque ensures a secure connection and prevents leaks or contamination of the transmission fluid. (Estimated value)
2

9G-Tronic Transmission Cooler Line Fittings

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Proper torque ensures a secure connection and prevents leaks or damage to the transmission. (Estimated value)

Body

Torque specifications for Body

Suspension

1

Strut/Shock Absorber Mounting Bolts

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

Control Arm Bolts

M16 x 1.5
Torque Specification
85 ft-lbs (115 N·m)

Steering

1

Steering Gear/Rack Bolts

M12 x 1.25
Torque Specification
74 ft-lbs (100 N·m)

Braking

1

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
148 ft-lbs (200 N·m)

Body and Frame

1

Body Mount Bolts

M12 x 1.25
Torque Specification
1. 40 ft-lbs (54 N·m) 2. 50 ft-lbs (68 N·m)
Important Notes
Estimated values. Consult the vehicle's service manual or manufacturer's recommendations for the correct torque values.

Doors and Hinges

1

Door Hinge Bolts

M10 x 1.25
Torque Specification
1. 20 ft-lbs (27 N·m) 2. 30 ft-lbs (41 N·m)
Important Notes
Estimated values. Consult the vehicle's service manual or manufacturer's recommendations for the correct torque values.
2

Hood Hinge Bolts

M10 x 1.25
Torque Specification
1. 20 ft-lbs (27 N·m) 2. 30 ft-lbs (41 N·m)
Important Notes
Estimated values. Consult the vehicle's service manual or manufacturer's recommendations for the correct torque values.
3

Trunk Lid Hinge Bolts

M10 x 1.25
Torque Specification
1. 20 ft-lbs (27 N·m) 2. 30 ft-lbs (41 N·m)
Important Notes
Estimated values. Consult the vehicle's service manual or manufacturer's recommendations for the correct torque values.

Bumpers and Trim

1

Bumper Mounting Bolts

M12 x 1.25
Torque Specification
1. 30 ft-lbs (41 N·m) 2. 40 ft-lbs (54 N·m)
Important Notes
Estimated values. Consult the vehicle's service manual or manufacturer's recommendations for the correct torque values.

Brakes

Torque specifications for Brakes

Brake Caliper

1

Brake Caliper Bolts

M12 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute clamping force.
2

Brake Caliper Mounting Bracket Bolts

M14 x 1.5
Torque Specification
148 ft-lbs (200 N·m)
Important Notes
Ensure the bracket is properly aligned with the steering knuckle or axle before tightening.

Brake Disc Drum

1

Brake Disc/Drum Retaining Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure the disc or drum is seated properly against the hub before tightening.

Wheel Hub

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
110 ft-lbs (150 N·m)
Important Notes
Ensure the wheel is properly seated against the hub before tightening.

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
15 ft-lbs (20 N·m)
Important Notes
Ensure the master cylinder is properly aligned with the brake booster or firewall.

Brake Booster

1

Brake Booster Mounting Bolts

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

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 firewall or pedal box before tightening.

Drivetrain

Torque specifications for Drivetrain

Engine Block and Crankshaft

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Specification
240 ft-lbs (325 N·m)

Connecting Rods

1

Connecting Rod Nuts

M12 x 1.25
Torque Specification
45 ft-lbs (61 N·m)

Flywheel and Transmission

1

Flywheel Bolts

M14 x 1.5
Torque Specification
54 ft-lbs (73 N·m)
2

Transmission Mounting Bolts

M12 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
3

Engine Block to Transmission Bellhousing Bolts

M16 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Estimated value. May vary depending on the specific application and manufacturer's recommendations.

Driveshaft and Axles

1

Drive Axle/Half Shaft Bolts

M18 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
2

CV Joint/Axle Nut

M20 x 1.5
Torque Specification
221 ft-lbs (300 N·m)
3

Propeller/Drive Shaft Bolts

M16 x 1.5
Torque Specification
44 ft-lbs (60 N·m)

Differential and Transfer Case

1

Differential Drain/Fill Plug

M12 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
2

Transfer Case Drain/Fill Plug

M10 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
3

Differential Cover Bolts

M12 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. May vary depending on the specific application and manufacturer's recommendations.
4

Transfer Case Mounting Bolts

M14 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. May vary depending on the specific application and manufacturer's recommendations.

Driveshaft and Axle Supports

1

Driveshaft Center Bearing Bolts

M14 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. May vary depending on the specific application and manufacturer's recommendations.
2

Transmission Crossmember Bolts

M16 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Estimated value. May vary depending on the specific application and manufacturer's recommendations.

Electrical

Torque specifications for Electrical

Electrical System Mounting

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
33 ft-lbs (45 N·m)
3

Ignition Coil Mounting Bolts

M10 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Estimated value based on general industry guidelines.

Electrical Connectors

1

Battery Terminal Nuts

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

Fuel Pump Electrical Connector Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on general industry guidelines.
3

A/C Compressor Electrical Connector Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on general industry guidelines.

Emissions Sensors

Torque specifications for Emissions_sensors

Exhaust Manifold Headers

1

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2

Exhaust Manifold/Headers to Cylinder Head Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.

Exhaust Pipe Connections

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure gasket is properly seated before tightening.
2

Catalytic Converter to Exhaust Pipe Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure gasket is properly seated before tightening.

Emissions Sensors

1

Oxygen Sensor (Lambda Sensor) Mounting Nut

M12 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure sensor is properly aligned before tightening.
2

NOx Sensor Mounting Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure sensor is properly aligned before tightening.
3

Exhaust Gas Temperature Sensor Mounting Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure sensor is properly aligned before tightening.

Diesel Particulate Filter

1

DPF Mounting Bolts

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.

Egr Valve

1

EGR Valve Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 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
25 ft-lbs (34 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
15 ft-lbs (20 N·m)
Important Notes
Ensure gasket is properly seated before tightening.

Muffler

1

Muffler to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure gasket is properly seated before tightening.

Exhaust Hangers

1

Exhaust Hanger Bolts

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

Oxygen Sensor

1

Oxygen Sensor Bolts

M12 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure sensor is properly seated before tightening.

Heat Shield

1

Exhaust Heat Shield Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure heat shield is properly aligned before tightening.

Exhaust Flange

1

Exhaust Flange Bolts (Downpipe to Midpipe)

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure gasket is properly seated before tightening.

Fuel

Torque specifications for Fuel

Fuel Rail and Injector System

1

Fuel Rail Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (9 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
7 ft-lbs (9 N·m)
Important Notes
Proper torque is necessary to prevent fuel leaks and maintain engine performance.
3

Fuel Injector Rail Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Proper torque is essential to prevent fuel leaks and maintain engine performance.

Fuel Pump and Tank System

1

Fuel Pump Mounting Bolts

M10 x 1.5
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Proper torque is necessary to prevent fuel leaks and maintain engine performance.
2

Fuel Tank Strap Bolts

M12 x 1.75
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Proper torque is necessary to prevent damage to the fuel tank or surrounding components.

Fuel Filler and Filter System

1

Fuel Filler Neck Bolts

M8 x 1.25
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Proper torque is necessary to prevent fuel leaks and maintain engine performance.
2

Fuel Filter Bolt/Nut

M12 x 1.75
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Proper torque is necessary to prevent fuel leaks and maintain engine performance.

Fuel Pressure Regulator and Line Fittings

1

Fuel Pressure Regulator Mounting Bolts

M10 x 1.5
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 15 ft-lbs (20 N·m)
Important Notes
Estimated torque values. Consult the manufacturer's recommendations for the correct torque values.
2

Fuel Line Fittings

M10 x 1.5
Torque Specification
1. 10 ft-lbs (14 N·m) 2. 15 ft-lbs (20 N·m)
Important Notes
Estimated torque values. Consult the manufacturer's recommendations for the correct torque values.

Fuel Injector Hold Down Clips

1

Fuel Injector Hold-Down Clips

M6 x 1.0
Torque Specification
1. 5 ft-lbs (7 N·m) 2. 10 ft-lbs (14 N·m)
Important Notes
Estimated torque values. Consult the manufacturer's recommendations for the correct torque values.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute clamping force.

Ac Lines

1

A/C Line Fittings

M8 x 1.0
Torque Specification
10 ft-lbs (13.5 N·m)
Important Notes
Use a torque wrench to avoid over-tightening, which can damage O-rings or fittings.

Evaporator Housing

1

Evaporator Housing Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems. Ensure housing is sealed properly to prevent air leaks.

Blower Motor

1

Blower Motor Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems. Ensure motor is securely mounted to prevent vibrations.

Heater Core

1

Heater Core Inlet/Outlet Fittings

M8 x 1.0
Torque Specification
10 ft-lbs (13.5 N·m)
Important Notes
Estimated value based on similar M8 fittings in HVAC systems. Ensure fittings are leak-free.

Condenser

1

Condenser Mounting Bolts

M10 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on similar M10 bolts in HVAC systems. Ensure condenser is securely mounted to prevent damage.

Suspension

Torque specifications for Suspension

Front Suspension

1

Strut/Shock Absorber Mounting Bolts

M14 x 1.5
Torque Specification
48 ft-lbs (65 N·m)
Important Notes
Secure the strut/shock absorber to the vehicle's frame.
2

Control Arm Bolts

M16 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Connect the control arms to the frame and suspension components.
3

Ball Joint Nut

M18 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Secure the ball joint to the control arm.
4

Tie Rod End Nut

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Secure the tie rod end to the steering knuckle.
5

Sway Bar Link Nut

M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Secure the sway bar link to the sway bar and control arm.

Control Arm Bushings

1

Upper Control Arm Bushing Bolts

M10 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Secure the upper control arm bushings to the frame. Estimated value based on general industry standards.
2

Lower Control Arm Bushing Bolts

M12 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Secure the lower control arm bushings to the frame. Estimated value based on general industry standards.

Coil Spring and Stabilizer Bar

1

Coil Spring Mounting Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Secure the coil spring to the strut/shock absorber. Estimated value based on general industry standards.
2

Stabilizer Bar Mounting Bolts

M12 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Secure the stabilizer bar to the frame. Estimated value 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 torque wrench IS suitable for tightening G-Class bolts?

Use a calibrated torque wrench with a range covering the specified torque values, such as 10-200 Nm or 50-500 Nm, as per Mercedes-BENZ technical standards.

Q2

How do I properly lubricate bolts before tightening?

To ensure proper torque application, apply a thin layer of anti-seize lubricant to the bolt threads before tightening. Use a lubricant specified by Mercedes-BENZ for the specific application.

Q3

Can I reuse bolts after replacing components?

Yes, bolts can be reused as long as they are not damaged or excessively worn. Clean the bolts and thread lockers thoroughly before reuse. Always refer to the official Mercedes-BENZ guidelines for specific bolt replacement recommendations.

Q4

IS it necessary to tighten bolts in a specific sequence?

Yes, tightening bolts in the correct sequence IS crucial to ensure even load distribution and prevent damage. Always follow the recommended tightening sequence provided in the Mercedes-BENZ technical documentation for your specific model and year.

Q5

What are the torque specifications for wheel lug nuts on the G-Class?

The torque specification for wheel lug nuts on the 2018-Present Mercedes-BENZ G-Class IS typically 180 Nm (133 lb-ft). Always refer to the specific torque value indicated in the vehicle's owner's manual or official Mercedes-BENZ documentation.

Q6

How can I find specific torque specifications for a particular component?

Refer to the official Mercedes-BENZ technical documentation, such as the Workshop Information System (WIS) or Electronic Parts Catalog (EPC), for detailed and up-to-date torque specifications for various components on your G-Class model.

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 g-class.

  • 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

Bolt Torque Specifications for g-Class

Procedure for tightening bolts on Mercedes g-class

  • Mount the digital torque wrench and select the appropriate torque setting for the specific bolt.
  • Clean and inspect the bolt and mating surface.
  • Apply a small amount of anti-seize compound to the threads of the bolt.
  • Insert the bolt and start threading it by hand.
  • Tighten the bolt using the torque wrench until the desired torque IS reached.
  • Double-check the torque value to ensure accuracy.
View full procedure
Technical Service Bulletins

TSB: Torque Specifications for g-Class W463 2018-Present

2023-04-01

Updated torque specifications for various components on the g-class.

2018-Present g-class W463

Resolution: Refer to the attached technical bulletin for detailed torque specifications and updates.

Legal Disclaimer

Important information about using this content

Always refer to your vehicle's service manual and take appropriate safety precautions when performing any maintenance or repairs.

General Information
The information provided on this website is for general informational purposes only. While we strive to maintain accuracy in our content, all specifications, procedures, and technical information should be verified against your vehicle's official service manual or with the manufacturer directly.
Warranty & Liability

The content on this website is provided "as is" without any representations or warranties, express or implied. We make no representations or warranties regarding the accuracy, completeness, or availability of the information.

We shall not be liable for any direct, indirect, special, or consequential damages arising from the use of information on this website.

Technical Information
  • All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
  • Vehicle specifications and procedures may vary by model year, trim level, and region.
  • Always follow the manufacturer's recommended procedures and safety precautions.
  • Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
  • If you're unsure about any procedure, consult a qualified professional mechanic.
Intellectual Property
All content, including text, images, and specifications, is protected by copyright and other intellectual property laws. Any unauthorized use or reproduction is prohibited.

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

ASE Master Certified Technician with over a decade of hands-on experience in automotive repair and diagnostics.

Facebook Contact
15+ Years
Experience
500+ Guides
Guides
50+ Makes
Vehicles
1000+ Solutions
Solutions

Diagnostic

Specialized in advanced diagnostic techniques using modern scan tools and oscilloscopes.

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

  • ASE Master Technician Certification
  • Advanced Diagnostic Specialist
  • Hybrid/Electric Vehicle Systems
  • Performance Tuning Expert

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

© 2025 Mercedes-Benz Specs. All rights reserved.

Privacy Policy Terms of Service