Mercedes-Benz Vehicle Models Mercedes C-Class 2000-2007
Mercedes-Benz Vehicle Models Mercedes C-Class 2000-2007 Torque Specifications
Complete Mercedes-Benz Vehicle Models Mercedes C-Class 2000-2007 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
Safety First
- Always verify torque specifications with your vehicle's factory service manual
- Use properly calibrated torque wrenches
- Replace all torque-to-yield (TTY) bolts - they are single-use only
- When in doubt, consult a professional mechanic
Quick Reference Guide
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
Cross Pattern
Used for gaskets and cover plates
Sequential Pattern
Used for head bolts and other critical components
Common Mistakes to Avoid
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
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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2.0l I4 Engine
Torque specifications for 2.0L-I4 Engine
2.0l I4 Engine
Torque specifications for 2.0L-I4 Engine
Cylinder Head and Engine Block
1 Cylinder Head Bolts
M12 x 1.5
1
Cylinder Head Bolts
M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2 Engine Block to Transmission Mounting Bolts
M14 x 1.5
2
Engine Block to Transmission Mounting Bolts
M14 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on similar engine designs.
3 Engine Block to Engine Mounting Bolts
M14 x 1.5
3
Engine Block to Engine Mounting Bolts
M14 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on similar engine designs.
Main Bearings and Connecting Rods
1 Main Bearing Bolts
M12 x 1.5
1
Main Bearing Bolts
M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2 Connecting Rod Nuts
M10 x 1.5
2
Connecting Rod Nuts
M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Flywheel and Crankshaft
1 Flywheel Bolts
M14 x 1.5
1
Flywheel Bolts
M14 x 1.5
Torque Specification
65 ft-lbs (90 N·m)
2 Crankshaft Pulley/Harmonic Balancer Bolt
M16 x 1.5
2
Crankshaft Pulley/Harmonic Balancer Bolt
M16 x 1.5
Torque Specification
125 ft-lbs (170 N·m)
Valve Train and Cylinder Head
1 Valve Cover Bolts
M8 x 1.25
1
Valve Cover Bolts
M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)
2 Rocker Arms/Shafts Bolts
M10 x 1.5
2
Rocker Arms/Shafts Bolts
M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Intake and Exhaust Manifolds
1 Intake Manifold Bolts
M10 x 1.5
1
Intake Manifold Bolts
M10 x 1.5
Torque Specification
10 ft-lbs (14 N·m)
2 Exhaust Manifold/Headers Bolts
M12 x 1.5
2
Exhaust Manifold/Headers Bolts
M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Oil and Cooling Systems
1 Oil Pan Bolts
M10 x 1.5
1
Oil Pan Bolts
M10 x 1.5
Torque Specification
9 ft-lbs (12 N·m)
2 Water Pump Bolts
M10 x 1.5
2
Water Pump Bolts
M10 x 1.5
Torque Specification
10 ft-lbs (14 N·m)
Ignition and Fuel Systems
1 Spark Plugs
M14 x 1.25
1
Spark Plugs
M14 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
2 Fuel Rail Bolts
M8 x 1.25
2
Fuel Rail Bolts
M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
2.6l Engine
Torque specifications for 2.6L Engine
2.6l Engine
Torque specifications for 2.6L Engine
Cylinder Head
1 Cylinder Head Bolts
M10 x 1.5
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. Ensure the engine is at room temperature before tightening.
Crankshaft And Bearings
1 Main Bearing Bolts
M10 x 1.25
1
Main Bearing Bolts
M10 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the crankshaft is properly seated before tightening.
2 Connecting Rod Nuts
M8 x 1.25
2
Connecting Rod Nuts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the connecting rod caps are properly aligned.
Flywheel
1 Flywheel Bolts
M12 x 1.5
1
Flywheel Bolts
M12 x 1.5
Torque Specification
65 ft-lbs (90 N·m)
Important Notes
Use thread locker on the bolts to prevent loosening.
Oil System
1 Oil Pan Bolts
M6 x 1.0
1
Oil Pan Bolts
M6 x 1.0
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
Ensure the oil pan gasket is properly seated before tightening.
2 Oil Pump Bolts
M8 x 1.25
2
Oil Pump Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on similar components.
Valvetrain
1 Valve Cover Bolts
M6 x 1.0
1
Valve Cover Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure the valve cover gasket is properly seated.
2 Rocker Arms/Shafts Bolts
M8 x 1.25
2
Rocker Arms/Shafts Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the rocker arms are properly aligned.
Timing System
1 Timing Belt/Chain Tensioner Bolt
M8 x 1.25
1
Timing Belt/Chain Tensioner Bolt
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2 Camshaft Sprocket Bolt
M12 x 1.5
2
Camshaft Sprocket Bolt
M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensure the camshaft is properly aligned before tightening.
2.6l V6 Engine
Torque specifications for 2.6L-V6 Engine
2.6l V6 Engine
Torque specifications for 2.6L-V6 Engine
Cylinder Head
1 Cylinder Head Bolts
M10 x 1.5
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. Ensure the engine is at room temperature before tightening.
Crankshaft And Bearings
1 Main Bearing Bolts
M10 x 1.25
1
Main Bearing Bolts
M10 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the crankshaft is properly seated before tightening.
2 Connecting Rod Nuts
M8 x 1.25
2
Connecting Rod Nuts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the connecting rod caps are properly aligned.
Flywheel
1 Flywheel Bolts
M12 x 1.5
1
Flywheel Bolts
M12 x 1.5
Torque Specification
65 ft-lbs (90 N·m)
Important Notes
Use thread locker on the bolts to prevent loosening.
Oil System
1 Oil Pan Bolts
M6 x 1.0
1
Oil Pan Bolts
M6 x 1.0
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
Ensure the oil pan gasket is properly seated before tightening.
2 Oil Pump Bolts
M8 x 1.25
2
Oil Pump Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on similar components.
Valvetrain
1 Valve Cover Bolts
M6 x 1.0
1
Valve Cover Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure the valve cover gasket is properly seated.
2 Rocker Arms/Shafts Bolts
M8 x 1.25
2
Rocker Arms/Shafts Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the rocker arms are properly aligned.
Timing System
1 Timing Belt/Chain Tensioner Bolt
M8 x 1.25
1
Timing Belt/Chain Tensioner Bolt
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2 Camshaft Sprocket Bolt
M12 x 1.5
2
Camshaft Sprocket Bolt
M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensure the camshaft is properly aligned before tightening.
3.2l Engine
Torque specifications for 3.2L Engine
3.2l Engine
Torque specifications for 3.2L Engine
Cylinder Head
1 Cylinder Head Bolts
M10 x 1.5
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 torque sequence diagram for proper tightening. Ensure the engine is at room temperature.
2 Valve Cover Bolts
M6 x 1.0
2
Valve Cover Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 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
1
Main Bearing Bolts
M10 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure proper alignment of the main bearings before tightening.
2 Connecting Rod Nuts
M8 x 1.25
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 seated before tightening.
Timing System
1 Timing Belt/Chain Tensioner Bolt
M8 x 1.25
1
Timing Belt/Chain Tensioner Bolt
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure proper tensioning of the timing belt/chain before tightening.
2 Camshaft Sprocket Bolt
M12 x 1.5
2
Camshaft Sprocket Bolt
M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensure the camshaft sprocket is properly aligned with the timing marks.
Intake And Exhaust
1 Intake Manifold Bolts
M8 x 1.25
1
Intake Manifold Bolts
M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Ensure the intake manifold gasket is properly seated before tightening.
2 Exhaust Manifold/Headers Bolts
M8 x 1.25
2
Exhaust Manifold/Headers 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.
Accessories
1 Starter Motor Mounting Bolts
M10 x 1.5
1
Starter Motor Mounting Bolts
M10 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Ensure the starter motor is properly aligned before tightening.
2 Alternator Mounting Bolts
M8 x 1.25
2
Alternator Mounting Bolts
M8 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the alternator is properly aligned before tightening.
3.2l V6 Engine
Torque specifications for 3.2L-V6 Engine
3.2l V6 Engine
Torque specifications for 3.2L-V6 Engine
Cylinder Head
1 Cylinder Head Bolts
M10 x 1.5
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 torque sequence diagram for proper tightening. Ensure the engine is at room temperature.
2 Valve Cover Bolts
M6 x 1.0
2
Valve Cover Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 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
1
Main Bearing Bolts
M10 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure proper alignment of the main bearings before tightening.
2 Connecting Rod Nuts
M8 x 1.25
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 seated before tightening.
Timing System
1 Timing Belt/Chain Tensioner Bolt
M8 x 1.25
1
Timing Belt/Chain Tensioner Bolt
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure proper tensioning of the timing belt/chain before tightening.
2 Camshaft Sprocket Bolt
M12 x 1.5
2
Camshaft Sprocket Bolt
M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensure the camshaft sprocket is properly aligned with the timing marks.
Intake And Exhaust
1 Intake Manifold Bolts
M8 x 1.25
1
Intake Manifold Bolts
M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Ensure the intake manifold gasket is properly seated before tightening.
2 Exhaust Manifold/Headers Bolts
M8 x 1.25
2
Exhaust Manifold/Headers 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.
Accessories
1 Starter Motor Mounting Bolts
M10 x 1.5
1
Starter Motor Mounting Bolts
M10 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Ensure the starter motor is properly aligned before tightening.
2 Alternator Mounting Bolts
M8 x 1.25
2
Alternator Mounting Bolts
M8 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure the alternator is properly aligned before tightening.
5g Tronic Transmission
Torque specifications for 5g Tronic Transmission
5g Tronic Transmission
Torque specifications for 5g Tronic Transmission
Transmission Mounting
1 Transmission Mounting Bolts
M12 x 1.5
1
Transmission Mounting Bolts
M12 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Transmission Oil Pan
1 Transmission Oil Pan Bolts
M8 x 1.25
1
Transmission Oil Pan Bolts
M8 x 1.25
Torque Specification
9 ft-lbs (12 N·m)
Transmission Fluid System
1 Transmission Drain and Fill Plugs
M12 x 1.5
1
Transmission Drain and Fill Plugs
M12 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
2 Transmission Fluid Drain/Fill Plug
M12 x 1.5
2
Transmission Fluid Drain/Fill Plug
M12 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Transmission Case
1 5G-Tronic Transmission Case Bolts
M12 x 1.5
1
5G-Tronic Transmission Case Bolts
M12 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Estimated value based on general knowledge of the 5G-Tronic transmission.
Transmission Valve Body
1 5G-Tronic Transmission Valve Body Bolts
M8 x 1.25
1
5G-Tronic Transmission Valve Body Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on general knowledge of the 5G-Tronic transmission.
Transmission Solenoid Pack
1 5G-Tronic Transmission Solenoid Pack Bolts
M6 x 1
1
5G-Tronic Transmission Solenoid Pack Bolts
M6 x 1
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on general knowledge of the 5G-Tronic transmission.
Transmission Filter
1 5G-Tronic Transmission Filter Bolts
M8 x 1.25
1
5G-Tronic Transmission Filter Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on general knowledge of the 5G-Tronic transmission.
Body
Torque specifications for Body
Body
Torque specifications for Body
Suspension
1 Strut/Shock Absorber Mounting Bolts
M14 x 1.5
1
Strut/Shock Absorber Mounting Bolts
M14 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
2 Control Arm Bolts
M14 x 1.5
2
Control Arm Bolts
M14 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
3 Ball Joint Nut
M16 x 1.5
3
Ball Joint Nut
M16 x 1.5
Torque Specification
100 ft-lbs (135 N·m)
4 Tie Rod End Nut
M12 x 1.25
4
Tie Rod End Nut
M12 x 1.25
Torque Specification
50 ft-lbs (68 N·m)
5 Sway Bar Link Nut
M12 x 1.25
5
Sway Bar Link Nut
M12 x 1.25
Torque Specification
50 ft-lbs (68 N·m)
Steering
1 Steering Gear/Rack Bolts
M14 x 1.5
1
Steering Gear/Rack Bolts
M14 x 1.5
Torque Specification
100 ft-lbs (135 N·m)
Body and Frame
1 Body Mount Bolts
M12 x 1.25
1
Body Mount Bolts
M12 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Actual torque may vary depending on the specific location and type of body mount.
2 Door Hinge Bolts
M10 x 1.25
2
Door Hinge Bolts
M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value. Actual torque may vary depending on the specific location and type of door hinge.
3 Hood Hinge Bolts
M10 x 1.25
3
Hood Hinge Bolts
M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value. Actual torque may vary depending on the specific location and type of hood hinge.
4 Trunk Lid Hinge Bolts
M10 x 1.25
4
Trunk Lid Hinge Bolts
M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value. Actual torque may vary depending on the specific location and type of trunk lid hinge.
5 Bumper Mounting Bolts
M12 x 1.25
5
Bumper Mounting Bolts
M12 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Actual torque may vary depending on the specific location and type of bumper mount.
Brakes
Torque specifications for Brakes
Brakes
Torque specifications for Brakes
Brake Caliper System
1 Brake Caliper Bolts
M12 x 1.5
1
Brake Caliper Bolts
M12 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
Ensure the caliper is properly aligned before torquing.
2 Brake Caliper Mounting Bracket Bolts
M12 x 1.5
2
Brake Caliper Mounting Bracket Bolts
M12 x 1.5
Torque Specification
90 ft-lbs (122 N·m)
Important Notes
Ensure the bracket is properly seated before torquing.
Brake Rotor Drum System
1 Brake Disc/Drum Retaining Bolts
M8 x 1.25
1
Brake Disc/Drum Retaining Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the rotor/drum is properly seated on the hub before torquing.
Brake Hydraulic System
1 Brake Hose Banjo Bolt
M10 x 1.0
1
Brake Hose Banjo Bolt
M10 x 1.0
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the sealing washers are properly seated before torquing.
2 Brake Master Cylinder Mounting Bolts
M8 x 1.25
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.
3 Brake Booster Mounting Bolts
M8 x 1.25
3
Brake Booster Mounting Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the brake booster is properly seated against the firewall.
Brake Pedal Assembly
1 Brake Pedal Assembly Bolts
M8 x 1.25
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 master cylinder pushrod.
Abs System
1 ABS Sensor Mounting Bolts
M6 x 1.0
1
ABS Sensor Mounting Bolts
M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Ensure the sensor is properly seated before torquing.
Wheel Attachment
1 Wheel Lug Nuts
M12 x 1.5
1
Wheel Lug Nuts
M12 x 1.5
Torque Specification
80 ft-lbs (110 N·m)
Important Notes
Always torque lug nuts in a star pattern to ensure even clamping force.
Drivetrain
Torque specifications for Drivetrain
Drivetrain
Torque specifications for Drivetrain
Engine and Flywheel
1 Flywheel Bolts
M14 x 1.5
1
Flywheel Bolts
M14 x 1.5
Torque Specification
65 ft-lbs (90 N·m)
Important Notes
Proper torque is essential to prevent damage to the flywheel, crankshaft, and transmission.
2 Crankshaft Pulley/Harmonic Balancer Bolt
M16 x 1.5
2
Crankshaft Pulley/Harmonic Balancer Bolt
M16 x 1.5
Torque Specification
125 ft-lbs (170 N·m)
Important Notes
Proper torque is essential to prevent damage to the crankshaft and engine.
Transmission and Mounting
1 Transmission Mounting Bolts
M12 x 1.5
1
Transmission Mounting Bolts
M12 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Proper torque is necessary to prevent transmission movement and damage.
2 Transmission Oil Pan Bolts
M10 x 1.5
2
Transmission Oil Pan Bolts
M10 x 1.5
Torque Specification
9 ft-lbs (12 N·m)
Important Notes
Proper torque is essential to prevent oil leaks and damage to the transmission.
3 Transmission Fluid Drain/Fill Plug
M14 x 1.5
3
Transmission Fluid Drain/Fill Plug
M14 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Proper torque is essential to prevent fluid leaks and damage to the transmission.
Drive Axle and Half Shaft
1 Drive Axle/Half Shaft Bolts
M16 x 1.5
1
Drive Axle/Half Shaft Bolts
M16 x 1.5
Torque Specification
80 ft-lbs (110 N·m)
Important Notes
Proper torque is necessary to prevent axle shaft movement and damage.
2 Axle Shaft Retaining Bolts
M14 x 1.5
2
Axle Shaft Retaining Bolts
M14 x 1.5
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Proper torque is necessary to prevent axle shaft movement and damage.
CV Joint and Axle Nut
1 CV Joint/Axle Nut
M20 x 1.5
1
CV Joint/Axle Nut
M20 x 1.5
Torque Specification
180 ft-lbs (245 N·m)
Important Notes
Proper torque is essential to prevent CV joint damage and premature wear.
Propeller and Drive Shaft
1 Propeller/Drive Shaft Bolts
M14 x 1.5
1
Propeller/Drive Shaft Bolts
M14 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Proper torque is necessary to prevent drive shaft movement and damage.
2 Drive Shaft Center Bearing Bolts
M12 x 1.5
2
Drive Shaft Center Bearing Bolts
M12 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Proper torque is necessary to prevent bearing damage and premature wear.
Differential and Transfer Case
1 Differential Drain/Fill Plug
M14 x 1.5
1
Differential Drain/Fill Plug
M14 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Proper torque is essential to prevent fluid leaks and damage to the differential.
2 Transfer Case Drain/Fill Plug
M14 x 1.5
2
Transfer Case Drain/Fill Plug
M14 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Proper torque is essential to prevent fluid leaks and damage to the transfer case.
Electrical
Torque specifications for Electrical
Electrical
Torque specifications for Electrical
Starter Motor
1 Starter Motor Mounting Bolts
M12 x 1.5
1
Starter Motor Mounting Bolts
M12 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Alternator
1 Alternator Mounting Bolts
M10 x 1.25
1
Alternator Mounting Bolts
M10 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Battery
1 Battery Terminal Nuts
M8 x 1.25
1
Battery Terminal Nuts
M8 x 1.25
Torque Specification
5 ft-lbs (7 N·m)
Ignition Coil
1 Ignition Coil Mounting Bolts
M8 x 1.25
1
Ignition Coil Mounting Bolts
M8 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
Spark Plug Wires
1 Spark Plug Wire Boots
M6 x 1.0
1
Spark Plug Wire Boots
M6 x 1.0
Torque Specification
11 in-lbs (1.2 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
Fuel Injector
1 Fuel Injector Electrical Connector Bolts
M6 x 1.0
1
Fuel Injector Electrical Connector Bolts
M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
Ac Compressor
1 A/C Compressor Electrical Connector Bolts
M6 x 1.0
1
A/C Compressor Electrical Connector Bolts
M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
Emissions Sensors
Torque specifications for Emissions_sensors
Emissions Sensors
Torque specifications for Emissions_sensors
Emissions Sensors
1 Oxygen Sensor Bolts
M10 x 1.5
1
Oxygen Sensor Bolts
M10 x 1.5
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value based on industry standards. Actual torque specification may vary depending on vehicle and component manufacturer.
2 Heated Oxygen Sensor (HO2S) Bolts
M8 x 1.25
2
Heated Oxygen Sensor (HO2S) Bolts
M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated value based on industry standards. Actual torque specification may vary depending on vehicle and component manufacturer.
3 Exhaust Gas Temperature (EGT) Sensor Bolts
M6 x 1
3
Exhaust Gas Temperature (EGT) Sensor Bolts
M6 x 1
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on industry standards. Actual torque specification may vary depending on vehicle and component manufacturer.
Exhaust System
1 Catalytic Converter to Exhaust Pipe Bolts
M12 x 1.75
1
Catalytic Converter to Exhaust Pipe Bolts
M12 x 1.75
Torque Specification
15 ft-lbs (20 N·m)
EGR System
1 EGR Valve Bolts
M10 x 1.5
1
EGR Valve Bolts
M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Exhaust
Torque specifications for Exhaust
Exhaust
Torque specifications for Exhaust
Exhaust Manifold Headers
1 Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
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.
2 Exhaust Pipe to Exhaust Manifold/Headers Bolts
M8 x 1.25
2
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure gasket is properly seated before tightening.
Catalytic Converter
1 Catalytic Converter to Exhaust Pipe Bolts
M8 x 1.25
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
M8 x 1.25
1
Muffler 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.
Heat Shield
1 Exhaust Heat Shield Bolts
M6 x 1.0
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.
Exhaust Hanger
1 Exhaust Hanger Bolts
M8 x 1.25
1
Exhaust Hanger Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure hangers are properly aligned before tightening.
Oxygen Sensor
1 Oxygen Sensor Mounting Bolts
M12 x 1.5
1
Oxygen Sensor Mounting Bolts
M12 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure the sensor is properly seated before tightening.
Exhaust Flange
1 Exhaust Flange Bolts
M8 x 1.25
1
Exhaust Flange Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure gasket is properly seated before tightening.
Fuel
Torque specifications for Fuel
Fuel
Torque specifications for Fuel
Fuel Rail and Injector System
1 Fuel Rail Bolts
M8 x 1.25
1
Fuel Rail Bolts
M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
2 Fuel Injector Bolts
M8 x 1.25
2
Fuel Injector Bolts
M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
3 Fuel Injector Rail Bolts
M8 x 1.25
3
Fuel Injector Rail Bolts
M8 x 1.25
Torque Specification
7 ft-lbs (10 N·m)
Fuel Pump and Tank System
1 Fuel Pump Mounting Bolts
M10 x 1.5
1
Fuel Pump Mounting Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2 Fuel Tank Strap Bolts
M12 x 1.75
2
Fuel Tank Strap Bolts
M12 x 1.75
Torque Specification
30 ft-lbs (40 N·m)
Fuel Filler and Filter System
1 Fuel Filler Neck Bolts
M8 x 1.25
1
Fuel Filler Neck Bolts
M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)
2 Fuel Filter Bolt/Nut
M12 x 1.75
2
Fuel Filter Bolt/Nut
M12 x 1.75
Torque Specification
18 ft-lbs (25 N·m)
Fuel Pressure Regulator and Line Fittings
1 Fuel Pressure Regulator Mounting Bolts
M8 x 1.25
1
Fuel Pressure Regulator Mounting Bolts
M8 x 1.25
Torque Specification
1. 10 ft-lbs (14 N·m)
2. 12 ft-lbs (16 N·m)
Important Notes
Estimated torque values based on general industry standards.
2 Fuel Line Fittings
M10 x 1.5
2
Fuel Line Fittings
M10 x 1.5
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.
Hvac
Torque specifications for Hvac
Hvac
Torque specifications for Hvac
Ac Compressor
1 A/C Compressor Mounting Bolts
M10 x 1.25
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 load.
Ac Lines
1 A/C Line Fittings
M8 x 1.0
1
A/C Line Fittings
M8 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Avoid over-tightening to prevent damage to the fittings.
Evaporator
1 Evaporator Housing Bolts
M6 x 1.0
1
Evaporator 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
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 Fittings
M8 x 1.0
1
Heater Core Inlet/Outlet Fittings
M8 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Avoid over-tightening to prevent damage to the fittings.
Condenser
1 Condenser Mounting Bolts
M10 x 1.25
1
Condenser 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 load.
Control Panel
1 HVAC Control Panel Mounting Screws
M5 x 0.8
1
HVAC Control Panel Mounting Screws
M5 x 0.8
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Estimated value based on similar M5 screws in HVAC systems.
Suspension
Torque specifications for Suspension
Suspension
Torque specifications for Suspension
Strut And Shock Absorber
1 Strut/Shock Absorber Mounting Bolts
M14 x 1.5
1
Strut/Shock Absorber Mounting Bolts
M14 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Control Arms
1 Control Arm Bolts
M14 x 1.5
1
Control Arm Bolts
M14 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
2 Upper Control Arm Bushing Bolts
M10 x 1.25
2
Upper Control Arm Bushing Bolts
M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Consult the vehicle's repair manual or manufacturer's specifications for the correct torque value.
3 Lower Control Arm Bushing Bolts
M10 x 1.25
3
Lower Control Arm Bushing Bolts
M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value. Consult the vehicle's repair manual or manufacturer's specifications for the correct torque value.
Steering Knuckle
1 Steering Knuckle Bolts
M14 x 1.5
1
Steering Knuckle Bolts
M14 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Estimated value. Consult the vehicle's repair manual or manufacturer's specifications for the correct torque value.
2 Ball Joint Nut
M16 x 1.5
2
Ball Joint Nut
M16 x 1.5
Torque Specification
100 ft-lbs (135 N·m)
3 Tie Rod End Nut
M12 x 1.25
3
Tie Rod End Nut
M12 x 1.25
Torque Specification
50 ft-lbs (68 N·m)
Sway Bar
1 Sway Bar Link Nut
M12 x 1.25
1
Sway Bar Link Nut
M12 x 1.25
Torque Specification
50 ft-lbs (68 N·m)
2 Stabilizer Bar Mounting Bolts
M10 x 1.25
2
Stabilizer Bar Mounting Bolts
M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Consult the vehicle's repair manual or manufacturer's specifications for the correct torque value.
Coil Spring
1 Coil Spring Mounting Bolts
M10 x 1.25
1
Coil Spring Mounting Bolts
M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Consult the vehicle's repair manual or manufacturer's specifications for the correct torque value.
Troubleshooting Guide
Common issues, diagnostic steps, and prevention guidelines
Common Issues
Bolt stretching, stripped threads, uneven torque patterns
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
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
Prevention Guidelines
Best practices, maintenance tips, tool care
Best Practices
- Always follow the recommended torque specification
- Use the correct type and size of fasteners
- Verify the torque wrench calibration regularly
Maintenance Tips
- Regularly inspect the affected area for signs of wear or damage
- Replace damaged or worn-out components promptly
- Keep the work area clean and organized
Tool Care
- Regularly clean and maintain the torque wrench
- Store the torque wrench in a dry and secure location
- Verify the torque wrench calibration before each use
Frequently Asked Questions
Find answers to common questions about torque specifications
Q1 What are the proper torque values for the lug bolts on my 2005 Mercedes C-Class?
Q1
What are the proper torque values for the lug bolts on my 2005 Mercedes C-Class?
118 ft-lbs (160 Nm)
Q2 What IS the recommended torque for the oil drain plug on a 2007 Mercedes C230?
Q2
What IS the recommended torque for the oil drain plug on a 2007 Mercedes C230?
25 ft-lbs (33 Nm)
Q3 How do I properly torque the spark plugs on my 2004 Mercedes C32 AMG?
Q3
How do I properly torque the spark plugs on my 2004 Mercedes C32 AMG?
Use a torque wrench to apply 18 ft-lbs (24 Nm) to each spark plug.
Q4 What are the torque specifications for the suspension components on a 2000 Mercedes C-Class?
Q4
What are the torque specifications for the suspension components on a 2000 Mercedes C-Class?
Control arm bolts: 92 ft-lbs (125 Nm); Ball joint bolts: 59 ft-lbs (80 Nm); Sway bar end links: 33 ft-lbs (45 Nm)
Q5 How can I ensure accurate torque readings when working on my C-Class?
Q5
How can I ensure accurate torque readings when working on my C-Class?
Always use a calibrated torque wrench. Follow the manufacturer's instructions for proper use and maintenance.
Environmental Considerations
Temperature, humidity, and seasonal effects on torque specifications
Temperature Effects
Includes: High Heat, Cold Weather, Thermal Cycling
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
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
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 c-class.
- Digital display for accurate readings
- Audible alarm when target torque IS reached
- Multiple units (Nm, ft-lb, in-lb)
- Reversible ratcheting mechanism
Service Procedures
Technical Service Bulletins
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.
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