Mercedes-Benz Vehicle Models Mercedes SLK 2011-2016
Mercedes-Benz Vehicle Models Mercedes SLK 2011-2016 Torque Specifications
Complete Mercedes-Benz Vehicle Models Mercedes SLK 2011-2016 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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Torque Calculator
Convert between different torque units
1.8l I4 Engine
Torque specifications for 1.8L-I4 Engine
1.8l I4 Engine
Torque specifications for 1.8L-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 Cylinder Head Studs
M14 x 1.5
2
Engine Block to Cylinder Head Studs
M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on general industry standards.
Main Bearings and Crankshaft
1 Main Bearing Bolts
M16 x 1.5
1
Main Bearing Bolts
M16 x 1.5
Torque Specification
69 ft-lbs (94 N·m)
2 Crankshaft Pulley/Harmonic Balancer Bolt
M18 x 1.5
2
Crankshaft Pulley/Harmonic Balancer Bolt
M18 x 1.5
Torque Specification
81 ft-lbs (110 N·m)
Valve Train and Timing
1 Camshaft Sprocket Bolt
M14 x 1.5
1
Camshaft Sprocket Bolt
M14 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
2 Timing Belt/Chain Tensioner Bolt
M12 x 1.5
2
Timing Belt/Chain Tensioner Bolt
M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Engine Mounts and Transmission
1 Engine Block to Transmission Bellhousing Bolts
M14 x 1.5
1
Engine Block to Transmission Bellhousing Bolts
M14 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on general industry standards.
2 Engine Mounting Bolts
M12 x 1.5
2
Engine Mounting Bolts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Estimated value based on general industry standards.
Intake and Exhaust
1 Intake Manifold Bolts
M10 x 1.5
1
Intake Manifold Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2 Exhaust Manifold/Headers Bolts
M12 x 1.5
2
Exhaust Manifold/Headers Bolts
M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Fuel and Ignition
1 Fuel Rail Bolts
M10 x 1.5
1
Fuel Rail Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2 Spark Plugs
M14 x 1.25
2
Spark Plugs
M14 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Cooling and Lubrication
1 Water Pump Bolts
M10 x 1.5
1
Water Pump Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2 Oil Pan Bolts
M10 x 1.5
2
Oil Pan Bolts
M10 x 1.5
Torque Specification
8 ft-lbs (11 N·m)
Accessories and Sensors
1 Throttle Body Bolts
M10 x 1.5
1
Throttle Body Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2 Crankshaft Position Sensor Bolt
M10 x 1.5
2
Crankshaft Position Sensor Bolt
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Estimated value based on general industry standards.
3.5l Engine
Torque specifications for 3.5L Engine
3.5l Engine
Torque specifications for 3.5L 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 Main Bearing Bolts
M14 x 1.5
2
Main Bearing Bolts
M14 x 1.5
Torque Specification
69 ft-lbs (94 N·m)
Crankshaft and Connecting Rods
1 Connecting Rod Nuts
M10 x 1.5
1
Connecting Rod Nuts
M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
2 Flywheel Bolts
M12 x 1.5
2
Flywheel Bolts
M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Valvetrain and Timing System
1 Camshaft Sprocket Bolt
M12 x 1.5
1
Camshaft Sprocket Bolt
M12 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
2 Timing Belt/Chain Tensioner Bolt
M10 x 1.5
2
Timing Belt/Chain Tensioner Bolt
M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Intake and Exhaust Systems
1 Intake Manifold Bolts
M10 x 1.5
1
Intake Manifold Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2 Exhaust Manifold/Headers Bolts
M12 x 1.5
2
Exhaust Manifold/Headers Bolts
M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Cooling System
1 Water Pump Bolts
M10 x 1.5
1
Water Pump Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2 Thermostat Housing Bolts
M10 x 1.5
2
Thermostat Housing Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
Accessory Drive System
1 Accessory Drive Belt Tensioner Bolt
M12 x 1.5
1
Accessory Drive Belt Tensioner Bolt
M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value based on industry standards.
Engine Mounting System
1 Engine Mounting Bolts
M14 x 1.5
1
Engine Mounting Bolts
M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on industry standards.
Oil System
1 Oil Pan Bolts
M10 x 1.5
1
Oil Pan Bolts
M10 x 1.5
Torque Specification
8 ft-lbs (11 N·m)
2 Oil Filter Housing Bolt
M10 x 1.5
2
Oil Filter Housing Bolt
M10 x 1.5
Torque Specification
N/A
Important Notes
Hand tight only.
Ignition System
1 Spark Plugs
M14 x 1.25
1
Spark Plugs
M14 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
2 Ignition Coil Bolt
M10 x 1.5
2
Ignition Coil Bolt
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
3.5l V6 Engine
Torque specifications for 3.5L-V6 Engine
3.5l V6 Engine
Torque specifications for 3.5L-V6 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 Main Bearing Bolts
M14 x 1.5
2
Main Bearing Bolts
M14 x 1.5
Torque Specification
69 ft-lbs (94 N·m)
Crankshaft and Connecting Rods
1 Connecting Rod Nuts
M10 x 1.5
1
Connecting Rod Nuts
M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
2 Flywheel Bolts
M12 x 1.5
2
Flywheel Bolts
M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Valvetrain and Timing System
1 Camshaft Sprocket Bolt
M12 x 1.5
1
Camshaft Sprocket Bolt
M12 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
2 Timing Belt/Chain Tensioner Bolt
M10 x 1.5
2
Timing Belt/Chain Tensioner Bolt
M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Intake and Exhaust Systems
1 Intake Manifold Bolts
M10 x 1.5
1
Intake Manifold Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2 Exhaust Manifold/Headers Bolts
M12 x 1.5
2
Exhaust Manifold/Headers Bolts
M12 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Cooling System
1 Water Pump Bolts
M10 x 1.5
1
Water Pump Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
2 Thermostat Housing Bolts
M10 x 1.5
2
Thermostat Housing Bolts
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
Accessory Drive System
1 Accessory Drive Belt Tensioner Bolt
M12 x 1.5
1
Accessory Drive Belt Tensioner Bolt
M12 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Estimated value based on industry standards.
Engine Mounting System
1 Engine Mounting Bolts
M14 x 1.5
1
Engine Mounting Bolts
M14 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on industry standards.
Oil System
1 Oil Pan Bolts
M10 x 1.5
1
Oil Pan Bolts
M10 x 1.5
Torque Specification
8 ft-lbs (11 N·m)
2 Oil Filter Housing Bolt
M10 x 1.5
2
Oil Filter Housing Bolt
M10 x 1.5
Torque Specification
N/A
Important Notes
Hand tight only.
Ignition System
1 Spark Plugs
M14 x 1.25
1
Spark Plugs
M14 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
2 Ignition Coil Bolt
M10 x 1.5
2
Ignition Coil Bolt
M10 x 1.5
Torque Specification
7 ft-lbs (10 N·m)
7g Tronic Transmission
Torque specifications for 7g Tronic Transmission
7g Tronic Transmission
Torque specifications for 7g Tronic Transmission
Transmission Mounting and Bellhousing
1 Transmission Mounting Bolts
M12 x 1.5 (estimated)
1
Transmission Mounting Bolts
M12 x 1.5 (estimated)
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
These values are provided for general guidance. Consult the manufacturer's documentation for confirmation.
2 7G-Tronic Transmission Bellhousing Bolts
M14 x 1.5 (estimated)
2
7G-Tronic Transmission Bellhousing Bolts
M14 x 1.5 (estimated)
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Estimated value based on industry standards. Consult the manufacturer's documentation for confirmation.
Transmission Oil Pan and Filter
1 Transmission Oil Pan Bolts
M10 x 1.25 (estimated)
1
Transmission Oil Pan Bolts
M10 x 1.25 (estimated)
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
These values are provided for general guidance. Consult the manufacturer's documentation for confirmation.
2 7G-Tronic Transmission Filter Bolts
M8 x 1.0 (estimated)
2
7G-Tronic Transmission Filter Bolts
M8 x 1.0 (estimated)
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on industry standards. Consult the manufacturer's documentation for confirmation.
Transmission Valve Body and Solenoid Pack
1 7G-Tronic Transmission Valve Body Bolts
M12 x 1.5 (estimated)
1
7G-Tronic Transmission Valve Body Bolts
M12 x 1.5 (estimated)
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on industry standards. Consult the manufacturer's documentation for confirmation.
2 7G-Tronic Transmission Solenoid Pack Bolts
M8 x 1.0 (estimated)
2
7G-Tronic Transmission Solenoid Pack Bolts
M8 x 1.0 (estimated)
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on industry standards. Consult the manufacturer's documentation for confirmation.
Transmission Fluid Drain and Fill
1 Transmission Drain and Fill Plugs
N/A (not applicable)
1
Transmission Drain and Fill Plugs
N/A (not applicable)
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
These values are provided for general guidance. Consult the manufacturer's documentation for confirmation.
Body
Torque specifications for Body
Body
Torque specifications for Body
Suspension and Steering
1 Strut/Shock Absorber Mounting Bolts
M14 x 1.5
1
Strut/Shock Absorber Mounting Bolts
M14 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
2 Control Arm Bolts
M16 x 1.5
2
Control Arm Bolts
M16 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
3 Ball Joint Nut
M12 x 1.25
3
Ball Joint Nut
M12 x 1.25
Torque Specification
44 ft-lbs (60 N·m)
4 Tie Rod End Nut
M12 x 1.25
4
Tie Rod End Nut
M12 x 1.25
Torque Specification
44 ft-lbs (60 N·m)
5 Sway Bar Link Nut
M12 x 1.25
5
Sway Bar Link Nut
M12 x 1.25
Torque Specification
44 ft-lbs (60 N·m)
6 Steering Gear/Rack Bolts
M14 x 1.5
6
Steering Gear/Rack Bolts
M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Body and Frame
1 Body Mount Bolts
M12 x 1.25
1
Body Mount Bolts
M12 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value. Actual torque value may vary depending on the specific location and type of bolt.
2 Door Hinge Bolts
M10 x 1.25
2
Door Hinge Bolts
M10 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Actual torque value may vary depending on the specific location and type of bolt.
3 Hood Hinge Bolts
M10 x 1.25
3
Hood Hinge Bolts
M10 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Actual torque value may vary depending on the specific location and type of bolt.
4 Trunk Lid Hinge Bolts
M10 x 1.25
4
Trunk Lid Hinge Bolts
M10 x 1.25
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Estimated value. Actual torque value may vary depending on the specific location and type of bolt.
5 Bumper Mounting Bolts
M12 x 1.25
5
Bumper Mounting Bolts
M12 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Estimated value. Actual torque value may vary depending on the specific location and type of bolt.
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
81 ft-lbs (110 N·m)
Important Notes
Ensure proper alignment of the caliper before tightening. Torque in a crisscross pattern.
2 Brake Caliper Mounting Bracket Bolts
M12 x 1.5
2
Brake Caliper Mounting Bracket Bolts
M12 x 1.5
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Ensure the bracket is properly seated before tightening. Torque in a crisscross pattern.
Brake Rotor System
1 Brake Disc/Drum Retaining Bolts
M12 x 1.5
1
Brake Disc/Drum Retaining Bolts
M12 x 1.5
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Ensure the rotor is properly seated before tightening. Torque in a crisscross pattern.
Wheel Attachment System
1 Wheel Lug Nuts
M14 x 1.5
1
Wheel Lug Nuts
M14 x 1.5
Torque Specification
96 ft-lbs (130 N·m)
Important Notes
Ensure the wheel is properly seated before tightening. Torque in a star pattern.
Brake Hydraulic System
1 Brake Hose Banjo Bolt
M10 x 1.0
1
Brake Hose Banjo Bolt
M10 x 1.0
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure the banjo fitting is properly aligned before tightening. Use new sealing washers.
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 seated before tightening. Torque in a crisscross pattern.
3 Brake Booster Mounting Bolts
M8 x 1.25
3
Brake Booster Mounting Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the brake booster is properly seated before tightening. Torque in a crisscross pattern.
4 Brake Pedal Assembly Bolts
M8 x 1.25
4
Brake Pedal Assembly Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the brake pedal assembly is properly seated before tightening. Torque in a crisscross pattern.
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 ABS sensor is properly seated before tightening. Avoid over-tightening to prevent damage to the sensor.
Drivetrain
Torque specifications for Drivetrain
Drivetrain
Torque specifications for Drivetrain
Engine Block and Crankshaft
1 Main Bearing Bolts
M14 x 1.5
1
Main Bearing Bolts
M14 x 1.5
Torque Specification
69 ft-lbs (94 N·m)
2 Crankshaft Pulley/Harmonic Balancer Bolt
M16 x 1.5
2
Crankshaft Pulley/Harmonic Balancer Bolt
M16 x 1.5
Torque Specification
81 ft-lbs (110 N·m)
Transmission and Bellhousing
1 Transmission Mounting Bolts
M12 x 1.5
1
Transmission Mounting Bolts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Transmission Bellhousing Bolts
M10 x 1.5
2
Transmission Bellhousing Bolts
M10 x 1.5
Torque Specification
40 ft-lbs (55 N·m)
Important Notes
Estimated value based on industry standards.
Differential and Axles
1 Differential Drain/Fill Plug
M12 x 1.5
1
Differential Drain/Fill Plug
M12 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
2 Differential Cover Bolts
M10 x 1.5
2
Differential Cover Bolts
M10 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on industry standards.
3 CV Joint/Axle Nut
M20 x 1.5
3
CV Joint/Axle Nut
M20 x 1.5
Torque Specification
184 ft-lbs (250 N·m)
Flywheel and Drive Axles
1 Flywheel Bolts
M14 x 1.5
1
Flywheel Bolts
M14 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
2 Drive Axle/Half Shaft Bolts
M12 x 1.5
2
Drive Axle/Half Shaft Bolts
M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Electrical
Torque specifications for Electrical
Electrical
Torque specifications for Electrical
Battery System
1 Battery Terminal Nuts
M8 x 1.25
1
Battery Terminal Nuts
M8 x 1.25
Torque Specification
6 ft-lbs (8 N·m)
Alternator and Starter System
1 Alternator Mounting Bolts
M12 x 1.5
1
Alternator Mounting Bolts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
2 Starter Motor Mounting Bolts
M12 x 1.5
2
Starter Motor Mounting Bolts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Ignition System
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 general industry standards.
2 Spark Plug Wire Retainer Bolts
M6 x 1
2
Spark Plug Wire Retainer Bolts
M6 x 1
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on general industry standards.
Accessory Systems
1 Fuel Pump Electrical Connector Bolts
M6 x 1
1
Fuel Pump Electrical Connector Bolts
M6 x 1
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on general industry standards.
2 A/C Compressor Electrical Connector Bolts
M6 x 1
2
A/C Compressor Electrical Connector Bolts
M6 x 1
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on general industry standards.
Emissions Sensors
Torque specifications for Emissions_sensors
Emissions Sensors
Torque specifications for Emissions_sensors
Exhaust Manifold System
1 Exhaust Manifold/Headers Bolts
M8 x 1.25
1
Exhaust Manifold/Headers Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 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
2
Exhaust Manifold/Headers to Cylinder Head Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
Exhaust Pipe System
1 Exhaust Pipe to Exhaust Manifold/Headers Bolts
M8 x 1.25
1
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure bolts are tightened evenly to prevent leaks.
2 Catalytic Converter to Exhaust Pipe Bolts
M8 x 1.25
2
Catalytic Converter to Exhaust Pipe Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure bolts are tightened evenly to prevent leaks.
3 Downpipe to Catalytic Converter Bolts
M8 x 1.25
3
Downpipe to Catalytic Converter Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure bolts are tightened evenly to prevent leaks.
Emissions Control System
1 EGR Valve Bolts
M6 x 1.0
1
EGR Valve Bolts
M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure bolts are tightened evenly to prevent leaks.
2 Secondary Air Injection System Bolts
M6 x 1.0
2
Secondary Air Injection System Bolts
M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure bolts are tightened evenly to prevent leaks.
Oxygen Sensor System
1 O2 Sensor (Oxygen Sensor) Mounting
M12 x 1.5
1
O2 Sensor (Oxygen Sensor) Mounting
M12 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure the sensor is properly aligned before tightening.
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
15 ft-lbs (20 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
15 ft-lbs (20 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.
Oxygen Sensor
1 Oxygen Sensor (O2 Sensor) Mounting Bolts
M10 x 1.25
1
Oxygen Sensor (O2 Sensor) Mounting Bolts
M10 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure sensor is properly aligned before tightening.
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 hanger is properly aligned before tightening.
Flex Pipe Joint
1 Flex Pipe or Exhaust Joint Bolts
M8 x 1.25
1
Flex Pipe or Exhaust Joint Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 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 Hold-Down Clamp Bolts
M6 x 1.0
3
Fuel Injector Hold-Down Clamp Bolts
M6 x 1.0
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
Fuel Pump and Filter System
1 Fuel Pump Mounting Bolts
M10 x 1.5
1
Fuel Pump Mounting Bolts
M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
2 Fuel Filter Bolt/Nut
M12 x 1.75
2
Fuel Filter Bolt/Nut
M12 x 1.75
Torque Specification
37 ft-lbs (50 N·m)
3 Fuel Pressure Regulator Mounting Bolts
M8 x 1.25
3
Fuel Pressure Regulator 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.
Fuel Tank and Filler Neck System
1 Fuel Tank Strap Bolts
M12 x 1.75
1
Fuel Tank Strap Bolts
M12 x 1.75
Torque Specification
15 ft-lbs (20 N·m)
2 Fuel Filler Neck Bolts
M10 x 1.5
2
Fuel Filler Neck Bolts
M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Fuel Line Fittings
1 Fuel Line Fittings
M8 x 1.25
1
Fuel Line Fittings
M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.
Hvac
Torque specifications for Hvac
Hvac
Torque specifications for Hvac
A/C Compressor
1 A/C Compressor Mounting Bolts
M10 x 1.5
1
A/C Compressor Mounting Bolts
M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Proper torque ensures secure attachment to the engine block, preventing vibration and noise.
A/C Lines and Fittings
1 A/C Line Fittings
M8 x 1.25
1
A/C Line Fittings
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Proper torque ensures a leak-free seal, preventing refrigerant loss and system malfunction.
A/C Condenser
1 A/C Condenser Mounting Bolts
M12 x 1.75
1
A/C Condenser Mounting Bolts
M12 x 1.75
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Estimated value based on industry standards. Proper torque ensures secure attachment to the radiator support, preventing vibration and noise.
A/C Evaporator
1 A/C Evaporator Mounting Bolts
M8 x 1.25
1
A/C Evaporator Mounting Bolts
M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on industry standards. Proper torque ensures secure attachment to the dashboard or HVAC module, preventing vibration and noise.
A/C Refrigerant Lines
1 A/C Refrigerant Line Clamp Bolts
M6 x 1.0
1
A/C Refrigerant Line Clamp Bolts
M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on industry standards. Proper torque ensures a leak-free seal, preventing refrigerant loss and system malfunction.
Suspension
Torque specifications for Suspension
Suspension
Torque specifications for Suspension
Front Suspension
1 Control Arm Bolts
M14 x 1.5
1
Control Arm Bolts
M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure proper torque to maintain suspension geometry and alignment.
2 Ball Joint Nut
M16 x 1.5
2
Ball Joint Nut
M16 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Ensure proper torque to maintain smooth suspension movement.
3 Steering Knuckle Bolts
M18 x 1.5
3
Steering Knuckle Bolts
M18 x 1.5
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Ensure proper torque to maintain steering geometry and alignment.
Rear Suspension
1 Upper Control Arm Bushing Bolts
M12 x 1.5
1
Upper Control Arm Bushing Bolts
M12 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Ensure proper torque to maintain suspension alignment and stability. (Estimated value)
2 Lower Control Arm Bolts
M14 x 1.5
2
Lower Control Arm Bolts
M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure proper torque to maintain suspension geometry and alignment.
3 Coil Spring Mounting Bolts
M10 x 1.5
3
Coil Spring Mounting Bolts
M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Ensure proper torque to maintain suspension alignment and stability.
Steering System
1 Tie Rod End Nut
M16 x 1.5
1
Tie Rod End Nut
M16 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Ensure proper torque to maintain steering geometry and alignment.
2 Sway Bar Link Nut
M14 x 1.5
2
Sway Bar Link Nut
M14 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Ensure proper torque to maintain suspension stability and alignment.
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 recommended torque specifications for the engine cylinder head bolts on a 2011-2016 Mercedes SLK?
Q1
What are the recommended torque specifications for the engine cylinder head bolts on a 2011-2016 Mercedes SLK?
The torque specifications for the engine cylinder head bolts on a 2011-2016 Mercedes SLK are as follows: - Step 1: 20 Nm (15 ft-lbs) - Step 2: 40 Nm (30 ft-lbs) - Step 3: 60 Nm (44 ft-lbs) - Step 4: 80 Nm (59 ft-lbs) - Step 5: 90 Nm (66 ft-lbs) - Step 6: 100 Nm (74 ft-lbs) plus an additional 90° angle turn
Q2 What IS the proper torque for the lug nuts on a 2011-2016 Mercedes SLK?
Q2
What IS the proper torque for the lug nuts on a 2011-2016 Mercedes SLK?
The recommended torque for the lug nuts on a 2011-2016 Mercedes SLK IS 120 Nm (89 ft-lbs).
Q3 What IS the torque specification for the oil drain plug on a 2011-2016 Mercedes SLK?
Q3
What IS the torque specification for the oil drain plug on a 2011-2016 Mercedes SLK?
The torque specification for the oil drain plug on a 2011-2016 Mercedes SLK IS 30 Nm (22 ft-lbs).
Q4 What type of torque wrench should I use for my 2011-2016 Mercedes SLK?
Q4
What type of torque wrench should I use for my 2011-2016 Mercedes SLK?
It IS recommended to use a torque wrench that IS specifically designed for automotive applications. The torque wrench should have a range that covers the torque specifications for your vehicle. Additionally, the torque wrench should be calibrated regularly to ensure accuracy.
Q5 What are the consequences of over-tightening a bolt?
Q5
What are the consequences of over-tightening a bolt?
Over-tightening a bolt can stretch the bolt, weaken it, and cause it to break. It can also damage the threads in the mating component. In some cases, over-tightening a bolt can even cause the component to crack or break.
Q6 What are the consequences of under-tightening a bolt?
Q6
What are the consequences of under-tightening a bolt?
Under-tightening a bolt can cause the bolt to loosen and come out, which can lead to a variety of problems. In some cases, under-tightening a bolt can even cause the component to fail.
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)
Recommended for tightening fasteners to precise torque specifications, preventing damage and ensuring proper assembly.
- Digital display for accurate readings
- Audible alarm when target torque IS reached
- Multiple units (Nm, ft-lb, in-lb)
- Reversible ratcheting mechanism
Service Procedures
Engine Bolt Torque Specifications
Technical procedure for tightening engine bolts on the 2011-2016 Mercedes slk.
- Locate and identify the engine bolts.
- Clean the bolts and threads with a degreaser.
- Apply a small amount of anti-seize lubricant to the bolts.
- Tighten the bolts to the specified torque using a digital torque wrench.
- Double-check the tightness of the bolts after they have been tightened.
Suspension Bolt Torque Specifications
Technical procedure for tightening suspension bolts on the 2011-2016 Mercedes slk.
- Locate and identify the suspension bolts.
- Clean the bolts and threads with a degreaser.
- Apply a small amount of anti-seize lubricant to the bolts.
- Tighten the bolts to the specified torque using a digital torque wrench.
- Double-check the tightness of the bolts after they have been tightened.
Brake System Bolt Torque Specifications
Technical procedure for tightening brake system bolts on the 2011-2016 Mercedes slk.
- Locate and identify the brake system bolts.
- Clean the bolts and threads with a degreaser.
- Apply a small amount of anti-seize lubricant to the bolts.
- Tighten the bolts to the specified torque using a digital torque wrench.
- Double-check the tightness of the bolts after they have been tightened.
Technical Service Bulletins
Service Bulletin: Engine Bolt Torque Correction
2014-04-01Updated torque specifications for certain engine bolts on the 2011-2013 Mercedes slk.
2011-2013 slk
Resolution: Tighten the specified engine bolts to the updated torque specifications.
Technical Service Bulletin: Suspension Bolt Inspection
2016-06-15Inspection procedure for suspension bolts on the 2011-2016 Mercedes slk.
2011-2016 slk
Resolution: Inspect the suspension bolts for signs of wear or damage and replace as necessary.
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Technical Information
- All specifications, including torque values, fluid capacities, and maintenance procedures, should be verified against your vehicle's factory service manual.
- Vehicle specifications and procedures may vary by model year, trim level, and region.
- Always follow the manufacturer's recommended procedures and safety precautions.
- Working on vehicles can be dangerous. Always take proper safety precautions and use appropriate safety equipment.
- If you're unsure about any procedure, consult a qualified professional mechanic.
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