Subaru Vehicle Models Subaru Impreza 2011-2016
Subaru Vehicle Models Subaru Impreza 2011-2016 Torque Specifications
Complete Subaru Vehicle Models Subaru Impreza 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
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2.0l H4 Engine
Torque specifications for 2.0L-H4 Engine
2.0l H4 Engine
Torque specifications for 2.0L-H4 Engine
Cylinder Head
1 Cylinder Head Bolts
M10 x 1.25
1
Cylinder Head Bolts
M10 x 1.25
Torque Specification
1. 26 ft-lbs (35 N·m)
2. 90°
Important Notes
Follow the manufacturer's specified torque sequence to ensure proper sealing.
2 Valve Cover Bolts
M6 x 1.0
2
Valve Cover Bolts
M6 x 1.0
Torque Specification
3.5 ft-lbs (4.7 N·m)
Important Notes
Use a crisscross pattern to ensure even gasket compression.
Crankshaft And Bearings
1 Main Bearing Bolts
M10 x 1.25
1
Main Bearing Bolts
M10 x 1.25
Torque Specification
56.5 ft-lbs (76.5 N·m)
Important Notes
Follow the specified torque sequence to ensure proper crankshaft alignment.
2 Connecting Rod Nuts
M8 x 1.25
2
Connecting Rod Nuts
M8 x 1.25
Torque Specification
33.5 ft-lbs (45.5 N·m)
Important Notes
Ensure proper lubrication of threads before tightening.
Timing System
1 Camshaft Sprocket Bolt
M12 x 1.25
1
Camshaft Sprocket Bolt
M12 x 1.25
Torque Specification
47 ft-lbs (63.5 N·m)
Important Notes
Ensure the timing marks are aligned before tightening.
2 Timing Belt Tensioner Bolt
M8 x 1.25
2
Timing Belt Tensioner Bolt
M8 x 1.25
Torque Specification
26.5 ft-lbs (36 N·m)
Important Notes
Ensure proper belt tension before tightening.
Intake And Exhaust
1 Intake Manifold Bolts
M8 x 1.25
1
Intake Manifold Bolts
M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Use a crisscross pattern to ensure even gasket compression.
2 Exhaust Manifold Bolts
M10 x 1.25
2
Exhaust Manifold Bolts
M10 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure proper alignment of the exhaust manifold before tightening.
Oil System
1 Oil Pan Bolts
M6 x 1.0
1
Oil Pan Bolts
M6 x 1.0
Torque Specification
5 ft-lbs (6.8 N·m)
Important Notes
Use a crisscross pattern to ensure even gasket compression.
2 Oil Pump Bolts
M6 x 1.0
2
Oil Pump Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (10.8 N·m)
Important Notes
Estimated value based on similar components.
Body
Torque specifications for Body
Body
Torque specifications for Body
Suspension And Steering
1 Wheel Lug Nuts
M12 x 1.5
1
Wheel Lug Nuts
M12 x 1.5
Torque Specification
98.5 ft-lbs (133.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Always use a crisscross pattern for tightening.
2 Strut/Shock Absorber Mounting Bolts
M10 x 1.25
2
Strut/Shock Absorber Mounting Bolts
M10 x 1.25
Torque Specification
26.5 ft-lbs (36 N·m)
Important Notes
Torque value is the midpoint of the provided range.
3 Control Arm Bolts
M12 x 1.75
3
Control Arm Bolts
M12 x 1.75
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Torque value is the midpoint of the provided range.
4 Ball Joint Nut
M12 x 1.25
4
Ball Joint Nut
M12 x 1.25
Torque Specification
47 ft-lbs (63.5 N·m)
Important Notes
Torque value is the midpoint of the provided range.
5 Tie Rod End Nut
M10 x 1.25
5
Tie Rod End Nut
M10 x 1.25
Torque Specification
32.5 ft-lbs (44 N·m)
Important Notes
Torque value is the midpoint of the provided range.
6 Sway Bar Link Nut
M10 x 1.25
6
Sway Bar Link Nut
M10 x 1.25
Torque Specification
32.5 ft-lbs (44 N·m)
Important Notes
Torque value is the midpoint of the provided range.
7 Steering Gear/Rack Bolts
M14 x 1.5
7
Steering Gear/Rack Bolts
M14 x 1.5
Torque Specification
79.5 ft-lbs (107.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Use a crisscross pattern for tightening.
Fuel System
1 Fuel Tank Strap Bolts
M8 x 1.25
1
Fuel Tank Strap Bolts
M8 x 1.25
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Torque value is the midpoint of the provided range.
2 Fuel Filler Neck Bolts
M6 x 1.0
2
Fuel Filler Neck Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque value is the midpoint of the provided range.
Electrical System
1 Battery Terminal Nuts
M6 x 1.0
1
Battery Terminal Nuts
M6 x 1.0
Torque Specification
4 ft-lbs (5.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Avoid over-tightening to prevent damage to the battery posts.
Body And Panels
1 Body Panel Bolts (e.g., fender, bumper, door hinges)
M6 x 1.0
1
Body Panel Bolts (e.g., fender, bumper, door hinges)
M6 x 1.0
Torque Specification
9.5 ft-lbs (13 N·m)
Important Notes
Torque value is the midpoint of the provided range. Avoid over-tightening to prevent damage to panels.
2 Seat Belt Anchorage Bolts
M10 x 1.25
2
Seat Belt Anchorage Bolts
M10 x 1.25
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Torque value is the midpoint of the provided range. Critical for passenger safety.
3 Subframe Mounting Bolts
M12 x 1.75
3
Subframe Mounting Bolts
M12 x 1.75
Torque Specification
80 ft-lbs (108.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Use a crisscross pattern for tightening.
4 Roof Rack Mounting Bolts
M6 x 1.0
4
Roof Rack Mounting Bolts
M6 x 1.0
Torque Specification
17.5 ft-lbs (23.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Avoid over-tightening to prevent damage to the roof structure.
5 Spare Tire Carrier Bolts
M8 x 1.25
5
Spare Tire Carrier Bolts
M8 x 1.25
Torque Specification
30 ft-lbs (40.5 N·m)
Important Notes
Torque value is the midpoint of the provided range.
Brakes
Torque specifications for Brakes
Brakes
Torque specifications for Brakes
Brake Caliper Assembly
1 Brake Caliper Bolts
M12 x 1.5
1
Brake Caliper Bolts
M12 x 1.5
Torque Specification
61.5 ft-lbs (83 N·m)
Important Notes
Estimated average torque value from the given range.
2 Brake Caliper Mounting Bracket Bolts
M12 x 1.5
2
Brake Caliper Mounting Bracket Bolts
M12 x 1.5
Torque Specification
61.5 ft-lbs (83 N·m)
Important Notes
Estimated average torque value from the given range.
Brake Rotor/Disc Assembly
1 Brake Disc/Drum Retaining Bolts
M10 x 1.25
1
Brake Disc/Drum Retaining Bolts
M10 x 1.25
Torque Specification
50.5 ft-lbs (68.5 N·m)
Important Notes
Estimated average torque value from the given range.
2 Brake Rotor Bolts (if applicable)
M8 x 1.25
2
Brake Rotor Bolts (if applicable)
M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated average torque value from the given range. Consult the vehicle's factory service manual for specific torque specifications.
Wheel Assembly
1 Wheel Lug Nuts
M14 x 1.5
1
Wheel Lug Nuts
M14 x 1.5
Torque Specification
98.5 ft-lbs (133.5 N·m)
Important Notes
Estimated average torque value from the given range.
Brake Master Cylinder Assembly
1 Brake Master Cylinder Bolts
M10 x 1.25
1
Brake Master Cylinder Bolts
M10 x 1.25
Torque Specification
17.5 ft-lbs (23.5 N·m)
Important Notes
Estimated average torque value from the given range. Consult the vehicle's factory service manual for specific torque specifications.
Brake Line Fittings
1 Brake Line Fittings (if applicable)
M8 x 1.25
1
Brake Line Fittings (if applicable)
M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated average torque value from the given range. Consult the vehicle's factory service manual for specific torque specifications.
Drivetrain
Torque specifications for Drivetrain
Drivetrain
Torque specifications for Drivetrain
Engine and Transmission Mounting
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 Crossmember Bolts
M14 x 1.5
2
Transmission Crossmember Bolts
M14 x 1.5
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Estimated value based on similar components.
Driveshaft and Axle Components
1 Propeller/Drive Shaft Bolts
M10 x 1.5
1
Propeller/Drive Shaft Bolts
M10 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
2 Drive Axle/Half Shaft Bolts
M12 x 1.5
2
Drive Axle/Half Shaft Bolts
M12 x 1.5
Torque Specification
52 ft-lbs (70 N·m)
3 CV Joint/Axle Nut
M20 x 1.5
3
CV Joint/Axle Nut
M20 x 1.5
Torque Specification
131 ft-lbs (177 N·m)
Differential and Transfer Case Components
1 Differential Cover Bolts
M12 x 1.5
1
Differential Cover Bolts
M12 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on similar components.
2 Transfer Case Drain/Fill Plug
M14 x 1.5
2
Transfer Case Drain/Fill Plug
M14 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Flywheel and Crankshaft Components
1 Flywheel Bolts
M14 x 1.5
1
Flywheel Bolts
M14 x 1.5
Torque Specification
51 ft-lbs (70 N·m)
2 Crankshaft Position Sensor Bolt
M8 x 1.25
2
Crankshaft Position Sensor Bolt
M8 x 1.25
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Estimated value based on similar components.
Transmission Components
1 Transmission Oil Pan Bolts
M10 x 1.5
1
Transmission Oil Pan Bolts
M10 x 1.5
Torque Specification
4 ft-lbs (5 N·m)
2 Transmission Drain and Fill Plugs
M14 x 1.5
2
Transmission Drain and Fill Plugs
M14 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Electrical
Torque specifications for Electrical
Electrical
Torque specifications for Electrical
Ignition System
1 Ignition Coil Bolt
M6 x 1.0
1
Ignition Coil Bolt
M6 x 1.0
Torque Specification
8.5 ft-lbs (12 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for electrical components.
Starting System
1 Starter Motor Mounting Bolts
M10 x 1.5
1
Starter Motor Mounting Bolts
M10 x 1.5
Torque Specification
32.5 ft-lbs (44 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for high-load components.
Charging System
1 Alternator Mounting Bolts
M10 x 1.5
1
Alternator Mounting Bolts
M10 x 1.5
Torque Specification
32.5 ft-lbs (44 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for high-load components.
Battery System
1 Battery Terminal Nuts
M6 x 1.0
1
Battery Terminal Nuts
M6 x 1.0
Torque Specification
4 ft-lbs (5.5 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for electrical connections.
2 Ground Strap Bolts
M6 x 1.0
2
Ground Strap Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for grounding components.
Climate Control System
1 A/C Compressor Mounting Bolts
M10 x 1.5
1
A/C Compressor Mounting Bolts
M10 x 1.5
Torque Specification
32.5 ft-lbs (44 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for high-load components.
2 A/C Line Fittings
M8 x 1.25
2
A/C Line Fittings
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Estimated value based on typical M8 bolt torque for A/C system components.
Engine Management System
1 ECU Mounting Bolts
M6 x 1.0
1
ECU Mounting Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for electronic components.
2 Sensor Mounting Bolts (e.g., Crankshaft Position Sensor, Camshaft Position Sensor)
M6 x 1.0
2
Sensor Mounting Bolts (e.g., Crankshaft Position Sensor, Camshaft Position Sensor)
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for sensor components.
Electrical Distribution System
1 Fuse Box Mounting Bolts
M6 x 1.0
1
Fuse Box Mounting Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for electrical components.
2 Wiring Harness Clamp Bolts
M6 x 1.0
2
Wiring Harness Clamp Bolts
M6 x 1.0
Torque Specification
4 ft-lbs (5.5 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for securing wiring harnesses.
Emissions Sensors
Torque specifications for Emissions_sensors
Emissions Sensors
Torque specifications for Emissions_sensors
Exhaust Manifold Headers
1 Exhaust Manifold/Headers Bolts
M10 x 1.25
1
Exhaust Manifold/Headers Bolts
M10 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2 Exhaust Manifold/Headers to Cylinder Head Bolts
M10 x 1.25
2
Exhaust Manifold/Headers to Cylinder Head Bolts
M10 x 1.25
Torque Specification
28 ft-lbs (38 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
M10 x 1.25
1
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure proper alignment before tightening.
2 Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.25
2
Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure proper alignment before tightening.
Emissions Sensors
1 Oxygen Sensor (O2 Sensor) Mounting Nut
M18 x 1.5
1
Oxygen Sensor (O2 Sensor) Mounting Nut
M18 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value based on similar sensor mounting nuts.
2 Exhaust Gas Temperature Sensor Mounting Bolt
M8 x 1.25
2
Exhaust Gas Temperature Sensor Mounting Bolt
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar sensor mounting bolts.
3 Downstream Oxygen Sensor Mounting Nut
M18 x 1.5
3
Downstream Oxygen Sensor Mounting Nut
M18 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Estimated value based on similar sensor mounting nuts.
Heat Shields
1 Catalytic Converter Heat Shield Bolts
M6 x 1.0
1
Catalytic Converter Heat Shield Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on similar heat shield bolts.
Egr System
1 EGR Valve Bolts
M8 x 1.25
1
EGR Valve Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar EGR valve bolts.
Exhaust
Torque specifications for Exhaust
Exhaust
Torque specifications for Exhaust
Exhaust Manifold Headers
1 Exhaust Manifold/Headers to Cylinder Head Bolts
M10 x 1.25
1
Exhaust Manifold/Headers to Cylinder Head Bolts
M10 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2 Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.25
2
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure gasket is properly seated before tightening.
Catalytic Converter
1 Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.25
1
Catalytic Converter to Exhaust Pipe Bolts
M10 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure gasket is properly seated before tightening.
Muffler
1 Muffler to Exhaust Pipe Bolts
M10 x 1.25
1
Muffler to Exhaust Pipe Bolts
M10 x 1.25
Torque Specification
28 ft-lbs (38 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
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on typical heat shield bolt sizes.
Oxygen Sensor
1 Oxygen Sensor (O2 Sensor)
M18 x 1.5
1
Oxygen Sensor (O2 Sensor)
M18 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure sensor is properly seated before tightening.
Exhaust Flange
1 Exhaust Flange Bolts (Downpipe to Midpipe)
M10 x 1.25
1
Exhaust Flange Bolts (Downpipe to Midpipe)
M10 x 1.25
Torque Specification
28 ft-lbs (38 N·m)
Important Notes
Ensure gasket is properly seated before tightening.
Exhaust Hanger
1 Exhaust Hanger Bolts
M8 x 1.25
1
Exhaust Hanger Bolts
M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on typical exhaust hanger bolt sizes.
Fuel
Torque specifications for Fuel
Fuel
Torque specifications for Fuel
Fuel Rail System
1 Fuel Rail Bolts
M6 x 1.0
1
Fuel Rail Bolts
M6 x 1.0
Torque Specification
2.5 ft-lbs (3.4 N·m)
Important Notes
Estimated value based on similar M6 bolts in fuel systems. Ensure a leak-free seal without over-tightening.
2 Fuel Injector Bolts
M6 x 1.0
2
Fuel Injector Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Ensure proper sealing of the injectors to prevent fuel leaks.
Fuel Pump System
1 Fuel Pump Mounting Bolts
M8 x 1.25
1
Fuel Pump Mounting Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on similar M8 bolts in fuel systems. Ensure the pump is securely mounted.
2 Fuel Tank Sender Unit Bolts
M6 x 1.0
2
Fuel Tank Sender Unit Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on similar M6 bolts in fuel systems. Ensure accurate fuel level readings.
Fuel Tank System
1 Fuel Tank Strap Bolts
M10 x 1.5
1
Fuel Tank Strap Bolts
M10 x 1.5
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Estimated value based on similar M10 bolts in fuel systems. Ensure the tank is securely held in place.
2 Fuel Filler Neck Bolts
M6 x 1.0
2
Fuel Filler Neck Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on similar M6 bolts in fuel systems. Ensure a secure connection to prevent leaks.
Fuel Filter System
1 Fuel Filter Bolt/Nut
M8 x 1.25
1
Fuel Filter Bolt/Nut
M8 x 1.25
Torque Specification
23.5 ft-lbs (32 N·m)
Important Notes
Estimated value based on similar M8 bolts in fuel systems. Ensure a leak-free connection.
High Pressure Fuel System
1 Fuel Pressure Regulator Bolts
M6 x 1.0
1
Fuel Pressure Regulator Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on similar M6 bolts in fuel systems. Ensure proper fuel pressure regulation.
2 High-Pressure Fuel Pump Bolts
M8 x 1.25
2
High-Pressure Fuel Pump Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on similar M8 bolts in fuel systems. Ensure secure mounting and leak-free operation.
Fuel Line System
1 Fuel Line Fittings
M8 x 1.25
1
Fuel Line Fittings
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Estimated value based on similar M8 bolts in fuel systems. Ensure leak-free connections.
Hvac
Torque specifications for Hvac
Hvac
Torque specifications for Hvac
A/C Compressor
1 A/C Compressor Mounting Bolts
M12 x 1.5
1
A/C Compressor Mounting Bolts
M12 x 1.5
Torque Specification
32.5 ft-lbs (44 N·m)
Important Notes
Estimated average value from the provided range.
A/C Lines and Fittings
1 A/C Line Fittings
M10 x 1.25
1
A/C Line Fittings
M10 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Estimated average value from the provided range.
2 A/C Refrigerant Line Clamp Bolts
M8 x 1.25
2
A/C Refrigerant Line Clamp Bolts
M8 x 1.25
Torque Specification
7.5 ft-lbs (10 N·m)
Important Notes
Estimated average value from the provided range.
A/C Condenser
1 A/C Condenser Mounting Bolts
M10 x 1.5
1
A/C Condenser Mounting Bolts
M10 x 1.5
Torque Specification
17.5 ft-lbs (24 N·m)
Important Notes
Estimated average value from the provided range.
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
12.5 ft-lbs (17 N·m)
Important Notes
Estimated average value from the provided range.
Suspension
Torque specifications for Suspension
Suspension
Torque specifications for Suspension
Strut Shock Absorber
1 Strut/Shock Absorber Mounting Bolts
M10 x 1.25
1
Strut/Shock Absorber Mounting Bolts
M10 x 1.25
Torque Specification
26.5 ft-lbs (36 N·m)
Important Notes
Torque value is the midpoint of the specified range (23-30 ft-lbs).
2 Strut Tower Mounting Bolts
M8 x 1.25
2
Strut Tower Mounting Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on typical M8 bolt torque specifications.
Control Arms
1 Control Arm Bolts
M12 x 1.5
1
Control Arm Bolts
M12 x 1.5
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Torque value is the midpoint of the specified range (37-43 ft-lbs).
2 Ball Joint Nut
M12 x 1.5
2
Ball Joint Nut
M12 x 1.5
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Torque value is the midpoint of the specified range (43-51 ft-lbs).
Steering Components
1 Tie Rod End Nut
M10 x 1.25
1
Tie Rod End Nut
M10 x 1.25
Torque Specification
32.5 ft-lbs (44 N·m)
Important Notes
Torque value is the midpoint of the specified range (29-36 ft-lbs).
2 Sway Bar Link Nut
M10 x 1.25
2
Sway Bar Link Nut
M10 x 1.25
Torque Specification
32.5 ft-lbs (44 N·m)
Important Notes
Torque value is the midpoint of the specified range (29-36 ft-lbs).
3 Steering Gear/Rack Bolts
M14 x 1.5
3
Steering Gear/Rack Bolts
M14 x 1.5
Torque Specification
79.5 ft-lbs (108 N·m)
Important Notes
Torque value is the midpoint of the specified range (74-85 ft-lbs).
Rear Suspension
1 Rear Trailing Arm Bolts
M12 x 1.5
1
Rear Trailing Arm Bolts
M12 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Estimated value based on typical M12 bolt torque specifications.
2 Rear Lateral Link Bolts
M12 x 1.5
2
Rear Lateral Link Bolts
M12 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Estimated value based on typical M12 bolt torque specifications.
3 Rear Hub Carrier Bolts
M14 x 1.5
3
Rear Hub Carrier Bolts
M14 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Estimated value based on typical M14 bolt torque specifications.
Wheels And Axles
1 CV Joint/Axle Nut
M24 x 1.5
1
CV Joint/Axle Nut
M24 x 1.5
Torque Specification
138 ft-lbs (187 N·m)
Important Notes
Torque value is the midpoint of the specified range (131-145 ft-lbs).
2 Wheel Lug Nuts
M12 x 1.25
2
Wheel Lug Nuts
M12 x 1.25
Torque Specification
1. 98.5 ft-lbs (133.5 N·m)
Important Notes
Torque value is the midpoint of the specified range (89-108 ft-lbs). Use a star pattern for tightening.
Subframe
1 Subframe Mounting Bolts
M14 x 1.5
1
Subframe Mounting Bolts
M14 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Estimated value based on typical M14 bolt torque specifications.
Tr580 Transmission
Torque specifications for Tr580 Transmission
Tr580 Transmission
Torque specifications for Tr580 Transmission
Transmission Mounting
1 Transmission Mounting Bolts
M10 x 1.25
1
Transmission Mounting Bolts
M10 x 1.25
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Ensure proper alignment of the transmission before tightening. Torque in a crisscross pattern.
2 Transmission Crossmember Bolts
M10 x 1.25
2
Transmission Crossmember Bolts
M10 x 1.25
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on similar mounting bolts. Torque in a crisscross pattern.
Oil Pan
1 Transmission Oil Pan Bolts
M6 x 1.0
1
Transmission Oil Pan Bolts
M6 x 1.0
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Use a torque wrench for precise application to avoid overtightening and damaging the pan or gasket.
Fluid Plugs
1 Transmission Drain Plug
M14 x 1.5
1
Transmission Drain Plug
M14 x 1.5
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Ensure the plug is clean and the sealing washer is in good condition before installation.
2 Transmission Fill Plug
M14 x 1.5
2
Transmission Fill Plug
M14 x 1.5
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Ensure the plug is clean and the sealing washer is in good condition before installation.
Driveline
1 Drive Axle/Half Shaft Bolts
M12 x 1.25
1
Drive Axle/Half Shaft Bolts
M12 x 1.25
Torque Specification
56 ft-lbs (76 N·m)
Important Notes
Ensure the axle is fully seated before tightening.
2 CV Joint/Axle Nut
M24 x 1.5
2
CV Joint/Axle Nut
M24 x 1.5
Torque Specification
138 ft-lbs (187 N·m)
Important Notes
Use a torque wrench and ensure the axle is fully seated.
3 Propeller/Drive Shaft Bolts
M8 x 1.25
3
Propeller/Drive Shaft Bolts
M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Torque in a crisscross pattern to ensure even clamping force.
Starter Motor
1 Starter Motor Mounting Bolts
M8 x 1.25
1
Starter Motor Mounting Bolts
M8 x 1.25
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Ensure the starter motor is properly aligned before tightening.
Bell Housing
1 Bell Housing Bolts
M10 x 1.25
1
Bell Housing Bolts
M10 x 1.25
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Torque in a crisscross pattern to ensure even clamping force.
2 Clutch Pressure Plate Bolts
M8 x 1.25
2
Clutch Pressure Plate Bolts
M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque in a crisscross pattern to ensure even clamping force.
3 Torque Converter Bolts
M8 x 1.25
3
Torque Converter Bolts
M8 x 1.25
Torque Specification
23 ft-lbs (31 N·m)
Important Notes
Ensure the torque converter is properly seated before tightening.
Shift Linkage
1 Shift Linkage Bolts
M6 x 1.0
1
Shift Linkage Bolts
M6 x 1.0
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure the shift linkage is properly aligned before tightening.
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 IS the proper torque value for the lug nuts on a 2011-2016 Subaru Impreza?
Q1
What IS the proper torque value for the lug nuts on a 2011-2016 Subaru Impreza?
100 ft-lb (135 Nm)
Q2 What torque wrench should be used for tightening critical bolts on the Subaru Impreza?
Q2
What torque wrench should be used for tightening critical bolts on the Subaru Impreza?
A torque wrench with a range of 20-250 ft-lb (27-339 Nm) and an accuracy of ±4%
Q3 How do I ensure accurate torque readings when using a torque wrench?
Q3
How do I ensure accurate torque readings when using a torque wrench?
Always calibrate your torque wrench according to the manufacturer's instructions and use it within its specified range.
Q4 What are the consequences of over-tightening bolts?
Q4
What are the consequences of over-tightening bolts?
Over-tightening can stretch or even break bolts, leading to potential safety hazards.
Q5 What IS the recommended torque sequence for tightening cylinder head bolts?
Q5
What IS the recommended torque sequence for tightening cylinder head bolts?
Refer to the Subaru Impreza service manual for specific torque sequence and angle values.
Q6 Can I use regular motor oil for engine bolts?
Q6
Can I use regular motor oil for engine bolts?
No, always use the specified thread sealant or anti-seize compound for engine bolts to prevent galling.
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)
Crucial for tightening bolts to exact specifications in the impreza, protecting components and ensuring proper assembly. This range covers most applications on the vehicle.
- Digital screen for precise readings
- Beeps when target torque IS reached
- Various units of measurement (Nm, ft-lb, in-lb)
- Ratcheting mechanism rotates in both directions
Service Procedures
Tightening Engine Cylinder Head Bolts
Procedure for proper engine cylinder head bolt tightening sequence and torque specifications on the impreza.
- Follow tightening sequence in a star pattern
- Use new bolts and apply engine oil to threads
- Tighten to 50 Nm (37 ft-lb) in three steps
- 90-degree turn to 65 Nm (48 ft-lb)
- 90-degree turn to 80 Nm (59 ft-lb)
Technical Service Bulletins
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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.
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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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