Subaru Vehicle Models Subaru Impreza 2007-2011
Subaru Vehicle Models Subaru Impreza 2007-2011 Torque Specifications
Complete Subaru Vehicle Models Subaru Impreza 2007-2011 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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2.5l H4 Engine
Torque specifications for 2.5L-H4 Engine
2.5l H4 Engine
Torque specifications for 2.5L-H4 Engine
Cylinder Head
1 Cylinder Head Bolts
M10 x 1.25
1
Cylinder Head Bolts
M10 x 1.25
Torque Specification
1. 18 ft-lbs (24 N·m)
2. 23 ft-lbs (31 N·m)
Important Notes
Follow the manufacturer's torque sequence to ensure even clamping force and prevent head gasket failure.
2 Valve Cover Bolts
M6 x 1.0
2
Valve Cover Bolts
M6 x 1.0
Torque Specification
4.4 ft-lbs (6 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before tightening.
3 Camshaft Position Sensor Bolt
M6 x 1.0
3
Camshaft Position Sensor Bolt
M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Estimated value based on similar sensor bolts.
Crankshaft And Bearings
1 Main Bearing Bolts
M12 x 1.25
1
Main Bearing Bolts
M12 x 1.25
Torque Specification
54 ft-lbs (73 N·m)
Important Notes
Follow the manufacturer's 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
34 ft-lbs (46 N·m)
Important Notes
Ensure the rod bearings are properly lubricated before assembly.
3 Flywheel Bolts
M10 x 1.25
3
Flywheel Bolts
M10 x 1.25
Torque Specification
48 ft-lbs (65 N·m)
Important Notes
Use thread locker on the bolts to prevent loosening.
Timing System
1 Timing Belt/Chain Tensioner Bolt
M8 x 1.25
1
Timing Belt/Chain Tensioner Bolt
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2 Camshaft Sprocket Bolt
M10 x 1.25
2
Camshaft Sprocket Bolt
M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Use a holding tool to prevent the camshaft from rotating during tightening.
3 Crankshaft Pulley/Harmonic Balancer Bolt
M12 x 1.25
3
Crankshaft Pulley/Harmonic Balancer Bolt
M12 x 1.25
Torque Specification
94 ft-lbs (127 N·m)
Important Notes
Use a holding tool to prevent the crankshaft from rotating during tightening.
Intake And Exhaust
1 Intake Manifold Bolts
M8 x 1.25
1
Intake Manifold Bolts
M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten bolts in a crisscross pattern to ensure even clamping force.
2 Exhaust Manifold/Headers Bolts
M8 x 1.25
2
Exhaust Manifold/Headers Bolts
M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure the gasket is properly seated before tightening.
3 Fuel Rail Bolts
M6 x 1.0
3
Fuel Rail Bolts
M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure the fuel rail is properly aligned before tightening.
4eat Transmission
Torque specifications for 4eat Transmission
4eat Transmission
Torque specifications for 4eat Transmission
Transmission Mounting
1 Transmission Mounting Bolts
M10 x 1.25
1
Transmission Mounting Bolts
M10 x 1.25
Torque Specification
36.5 ft-lbs (49.5 N·m)
Important Notes
Torque value is the midpoint of the specified range (33-40 ft-lbs). Ensure bolts are tightened 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
4.5 ft-lbs (6.1 N·m)
Important Notes
Torque value is the midpoint of the specified range (48-60 inch-lbs). Use a crisscross pattern to avoid warping the oil pan.
Fluid Management
1 Transmission Drain Plug
M14 x 1.5
1
Transmission Drain Plug
M14 x 1.5
Torque Specification
36 ft-lbs (48.8 N·m)
Important Notes
Torque value is the midpoint of the specified range (29-43 ft-lbs). Use a new crush washer to prevent leaks.
2 Transmission Fill Plug
M14 x 1.5
2
Transmission Fill Plug
M14 x 1.5
Torque Specification
36 ft-lbs (48.8 N·m)
Important Notes
Torque value is the midpoint of the specified range (29-43 ft-lbs). Use a new crush washer to prevent leaks.
Driveline Connection
1 Drive Axle/Half Shaft Bolts
M10 x 1.25
1
Drive Axle/Half Shaft Bolts
M10 x 1.25
Torque Specification
67 ft-lbs (90.8 N·m)
Important Notes
Torque value is the midpoint of the specified range (58-76 ft-lbs). Use a crisscross pattern for even tightening.
2 CV Joint/Axle Nut
M24 x 1.5
2
CV Joint/Axle Nut
M24 x 1.5
Torque Specification
166.5 ft-lbs (226 N·m)
Important Notes
Torque value is the midpoint of the specified range (145-188 ft-lbs). Use a new cotter pin to secure the nut.
3 Propeller/Drive Shaft Bolts
M10 x 1.25
3
Propeller/Drive Shaft Bolts
M10 x 1.25
Torque Specification
65.5 ft-lbs (88.8 N·m)
Important Notes
Torque value is the midpoint of the specified range (59-72 ft-lbs). Use a crisscross pattern for even tightening.
Starter Motor
1 Starter Motor Mounting Bolts
M8 x 1.25
1
Starter Motor Mounting Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27.1 N·m)
Important Notes
Torque value is the midpoint of the specified range (18-22 ft-lbs). Ensure proper alignment of the starter motor.
Torque Converter
1 Torque Converter Bolts
M8 x 1.25
1
Torque Converter Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27.1 N·m)
Important Notes
Torque value is the midpoint of the specified range (18-22 ft-lbs). Ensure proper alignment of the torque converter.
Bellhousing
1 Transmission Bellhousing Bolts
M10 x 1.25
1
Transmission Bellhousing Bolts
M10 x 1.25
Torque Specification
36.5 ft-lbs (49.5 N·m)
Important Notes
Torque value is the midpoint of the specified range (33-40 ft-lbs). Use a crisscross pattern for even tightening.
Shift Linkage
1 Transmission Shift Linkage Bolts
M6 x 1.0
1
Transmission Shift Linkage Bolts
M6 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Torque value is the midpoint of the specified range (12-16 ft-lbs). Ensure proper alignment of the shift linkage.
Cooler Lines
1 Transmission Cooler Line Fittings
M12 x 1.25
1
Transmission Cooler Line Fittings
M12 x 1.25
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Torque value is the midpoint of the specified range (15-20 ft-lbs). Use a new O-ring or seal to prevent leaks.
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
90 ft-lbs (122 N·m)
Important Notes
Torque in a star pattern to ensure even clamping force.
2 Strut/Shock Absorber Mounting Bolts
M10 x 1.25
2
Strut/Shock Absorber Mounting Bolts
M10 x 1.25
Torque Specification
72 ft-lbs (98 N·m)
Important Notes
Ensure suspension is at ride height before torquing.
3 Control Arm Bolts
M12 x 1.75
3
Control Arm Bolts
M12 x 1.75
Torque Specification
89 ft-lbs (121 N·m)
Important Notes
Ensure suspension is at ride height before torquing.
4 Ball Joint Nut
M10 x 1.25
4
Ball Joint Nut
M10 x 1.25
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Estimated value based on similar components.
5 Tie Rod End Nut
M8 x 1.25
5
Tie Rod End Nut
M8 x 1.25
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure proper alignment after installation.
6 Sway Bar Link Nut
M8 x 1.25
6
Sway Bar Link Nut
M8 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Estimated value based on similar components.
7 Steering Gear/Rack Bolts
M10 x 1.25
7
Steering Gear/Rack Bolts
M10 x 1.25
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque in a crisscross pattern.
Braking System
1 Brake Caliper Bolts
M8 x 1.25
1
Brake Caliper Bolts
M8 x 1.25
Torque Specification
19 ft-lbs (26 N·m)
Important Notes
Ensure proper alignment of the caliper.
2 Brake Caliper Mounting Bracket Bolts
M12 x 1.75
2
Brake Caliper Mounting Bracket Bolts
M12 x 1.75
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Estimated value based on similar components.
3 Brake Disc/Drum Retaining Bolts
M6 x 1.0
3
Brake Disc/Drum Retaining Bolts
M6 x 1.0
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensure proper alignment of the brake disc/drum.
Fuel System
1 Fuel Tank Strap Bolts
M8 x 1.25
1
Fuel Tank Strap Bolts
M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure the fuel tank is properly aligned before torquing.
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
Ensure a proper seal to prevent fuel leaks.
Safety System
1 Seat Belt Anchorage Bolts
M10 x 1.25
1
Seat Belt Anchorage Bolts
M10 x 1.25
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Critical for passenger safety. Ensure proper alignment.
Structural System
1 Subframe Mounting Bolts
M14 x 2.0
1
Subframe Mounting Bolts
M14 x 2.0
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Torque in a crisscross pattern to ensure even clamping force.
2 Bumper Reinforcement Bolts
M8 x 1.25
2
Bumper Reinforcement Bolts
M8 x 1.25
Torque Specification
21 ft-lbs (28 N·m)
Important Notes
Ensure proper alignment for crash protection.
Brakes
Torque specifications for Brakes
Brakes
Torque specifications for Brakes
Brake Caliper System
1 Brake Caliper Bolts
M10 x 1.25
1
Brake Caliper Bolts
M10 x 1.25
Torque Specification
19.5 ft-lbs (26.5 N·m)
Important Notes
Estimated value based on typical M10 bolt torque specifications. Ensure proper alignment of the caliper during installation.
2 Brake Caliper Mounting Bracket Bolts
M12 x 1.5
2
Brake Caliper Mounting Bracket Bolts
M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Estimated value based on typical M12 bolt torque specifications. Ensure the bracket is securely anchored to the steering knuckle or hub assembly.
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
25.5 ft-lbs (34.5 N·m)
Important Notes
Estimated value based on typical M8 bolt torque specifications. Ensure the rotor or drum is properly seated on the hub before tightening.
Wheel Hub System
1 Wheel Lug Nuts
M12 x 1.5
1
Wheel Lug Nuts
M12 x 1.5
Torque Specification
90 ft-lbs (122 N·m)
Important Notes
Ensure proper torque to maintain rotor alignment and caliper positioning. Use a star pattern for tightening.
Brake Hydraulic System
1 Brake Hose Fittings
M10 x 1.0
1
Brake Hose Fittings
M10 x 1.0
Torque Specification
16.5 ft-lbs (22.5 N·m)
Important Notes
Estimated value based on typical M10 bolt torque specifications. Ensure a leak-free connection.
2 Master Cylinder Mounting Bolts
M8 x 1.25
2
Master Cylinder Mounting Bolts
M8 x 1.25
Torque Specification
10 ft-lbs (13.5 N·m)
Important Notes
Estimated value based on typical M8 bolt torque specifications. Ensure proper alignment with the brake booster.
3 Brake Bleeder Screws
M8 x 1.25
3
Brake Bleeder Screws
M8 x 1.25
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Estimated value based on typical M8 bolt torque specifications. Ensure the screws are securely closed to prevent air entry or fluid leakage.
Brake Pedal System
1 Brake Pedal Assembly Bolts
M8 x 1.25
1
Brake Pedal Assembly Bolts
M8 x 1.25
Torque Specification
16.5 ft-lbs (22.5 N·m)
Important Notes
Estimated value based on typical M8 bolt torque specifications. Ensure proper alignment with the firewall or bracket.
Drivetrain
Torque specifications for Drivetrain
Drivetrain
Torque specifications for Drivetrain
Flywheel
1 Flywheel Bolts
M10 x 1.25
1
Flywheel Bolts
M10 x 1.25
Torque Specification
51 ft-lbs (69 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper sequence to avoid warping the flywheel.
Transmission Mounting
1 Transmission Mounting Bolts
M12 x 1.75
1
Transmission Mounting Bolts
M12 x 1.75
Torque Specification
36.5 ft-lbs (49.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure mounts are properly aligned before tightening.
Drive Axle
1 Drive Axle/Half Shaft Bolts
M14 x 1.5
1
Drive Axle/Half Shaft Bolts
M14 x 1.5
Torque Specification
67 ft-lbs (91 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the axle before tightening.
2 CV Joint/Axle Nut
M24 x 1.5
2
CV Joint/Axle Nut
M24 x 1.5
Torque Specification
166.5 ft-lbs (226 N·m)
Important Notes
Torque value is the midpoint of the provided range. Use a torque wrench capable of handling high torque values.
Propeller Shaft
1 Propeller/Drive Shaft Bolts
M12 x 1.75
1
Propeller/Drive Shaft Bolts
M12 x 1.75
Torque Specification
65.5 ft-lbs (89 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the drive shaft before tightening.
Transmission Fluid System
1 Transmission Oil Pan Bolts
M6 x 1.0
1
Transmission Oil Pan Bolts
M6 x 1.0
Torque Specification
0.5 ft-lbs (0.7 N·m)
Important Notes
Torque value is the midpoint of the provided range. Use a torque wrench capable of handling low torque values.
2 Transmission Drain and Fill Plugs
M14 x 1.5
2
Transmission Drain and Fill Plugs
M14 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper sealing to prevent leaks.
Differential Fluid System
1 Differential Drain/Fill Plug
M14 x 1.5
1
Differential Drain/Fill Plug
M14 x 1.5
Torque Specification
39.5 ft-lbs (53.5 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper sealing to prevent leaks.
Transfer Case Fluid System
1 Transfer Case Drain/Fill Plug
M14 x 1.5
1
Transfer Case Drain/Fill Plug
M14 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper sealing to prevent leaks.
Differential Mounting
1 Differential Mounting Bolts
M12 x 1.75
1
Differential Mounting Bolts
M12 x 1.75
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the differential before tightening.
Transfer Case Mounting
1 Transfer Case Mounting Bolts
M10 x 1.25
1
Transfer Case Mounting Bolts
M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the transfer case before tightening.
Rear Differential
1 Rear Differential Pinion Flange Bolts
M12 x 1.75
1
Rear Differential Pinion Flange Bolts
M12 x 1.75
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the driveshaft before tightening.
Front Differential
1 Front Differential Carrier Bolts
M12 x 1.75
1
Front Differential Carrier Bolts
M12 x 1.75
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is the midpoint of the provided range. Ensure proper alignment of the differential before tightening.
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 (11.5 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for electrical components.
Starting System
1 Starter Motor Mounting Bolts
M8 x 1.25
1
Starter Motor Mounting Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on typical M8 bolt torque for mounting electrical components.
Charging System
1 Alternator Mounting Bolts
M10 x 1.5
1
Alternator Mounting Bolts
M10 x 1.5
Torque Specification
36.5 ft-lbs (49.5 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for mounting heavy electrical components.
Battery System
1 Battery Terminal Nuts
M6 x 1.0
1
Battery Terminal Nuts
M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for electrical connections.
Ac System
1 A/C Compressor Mounting Bolts
M8 x 1.25
1
A/C Compressor Mounting Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Estimated value based on typical M8 bolt torque for mounting electrical components.
2 A/C Line Fittings
M6 x 1.0
2
A/C Line Fittings
M6 x 1.0
Torque Specification
17.5 ft-lbs (23.5 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for A/C fittings.
Grounding System
1 Grounding Point Bolts
M6 x 1.0
1
Grounding Point Bolts
M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for grounding connections.
Fuse And Ecu System
1 Fuse Box Mounting Bolts
M6 x 1.0
1
Fuse Box Mounting Bolts
M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for mounting electrical components.
2 ECU Mounting Bolts
M6 x 1.0
2
ECU Mounting Bolts
M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for mounting electrical components.
Wiring Harness System
1 Wiring Harness Clamp Bolts
M6 x 1.0
1
Wiring Harness Clamp Bolts
M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for securing wiring harnesses.
Lighting System
1 Headlight Mounting Bolts
M6 x 1.0
1
Headlight Mounting Bolts
M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for mounting electrical components.
Emissions Sensors
Torque specifications for Emissions_sensors
Emissions Sensors
Torque specifications for Emissions_sensors
Egr System
1 EGR Valve Bolts
M8 x 1.25
1
EGR Valve Bolts
M8 x 1.25
Torque Specification
20.5 ft-lbs (27.8 N·m)
Important Notes
Torque value is the midpoint of the provided range (18-23 ft-lbs).
Exhaust Manifold System
1 Exhaust Manifold/Headers Bolts
M10 x 1.5
1
Exhaust Manifold/Headers Bolts
M10 x 1.5
Torque Specification
29.5 ft-lbs (40 N·m)
Important Notes
Torque value is the midpoint of the provided range (25-34 ft-lbs).
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
20.5 ft-lbs (27.8 N·m)
Important Notes
Torque value is the midpoint of the provided range (18-23 ft-lbs).
Exhaust Pipe System
1 Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
1
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
Torque Specification
29.5 ft-lbs (40 N·m)
Important Notes
Torque value is the midpoint of the provided range (25-34 ft-lbs).
2 Catalytic Converter to Exhaust Pipe Bolts
M8 x 1.25
2
Catalytic Converter to Exhaust Pipe Bolts
M8 x 1.25
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Torque value is the midpoint of the provided range (13-15 ft-lbs).
Emissions Sensors
1 Oxygen Sensor (O2 Sensor)
M18 x 1.5
1
Oxygen Sensor (O2 Sensor)
M18 x 1.5
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Torque value is estimated based on similar sensor specifications.
2 Air Fuel Ratio (AFR) Sensor
M18 x 1.5
2
Air Fuel Ratio (AFR) Sensor
M18 x 1.5
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Torque value is estimated based on similar sensor specifications.
3 Exhaust Gas Temperature (EGT) Sensor
M12 x 1.25
3
Exhaust Gas Temperature (EGT) Sensor
M12 x 1.25
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Torque value is the midpoint of the provided range (15-20 ft-lbs).
Heat Shield System
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 (10.8 N·m)
Important Notes
Torque value is the midpoint of the provided range (7-9 ft-lbs).
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
20.5 ft-lbs (27.8 N·m)
Important Notes
Torque value is an average of the provided range (18-23 ft-lbs). Ensure bolts are tightened in a crisscross pattern to evenly distribute pressure.
2 Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
2
Exhaust Pipe to Exhaust Manifold/Headers Bolts
M10 x 1.5
Torque Specification
29.5 ft-lbs (40 N·m)
Important Notes
Torque value is an average of the provided range (25-34 ft-lbs). Ensure the 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
14 ft-lbs (19 N·m)
Important Notes
Torque value is an average of the provided range (13-15 ft-lbs). Avoid over-tightening to prevent damage to the catalytic converter.
Muffler
1 Muffler to Exhaust Pipe Bolts
M8 x 1.25
1
Muffler to Exhaust Pipe Bolts
M8 x 1.25
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Torque value is an average of the provided range (13-15 ft-lbs). Ensure the muffler is properly aligned 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 (10.8 N·m)
Important Notes
Torque value is an average of the provided range (7-9 ft-lbs). Avoid over-tightening to prevent damage to the heat shield.
Exhaust Hangers
1 Exhaust Hanger Bolts
M8 x 1.25
1
Exhaust Hanger Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque value is an average of the provided range (18-22 ft-lbs). Ensure the hanger is properly aligned before tightening.
Oxygen Sensor
1 Oxygen Sensor (O2 Sensor) Bolts
M8 x 1.25
1
Oxygen Sensor (O2 Sensor) Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque value is an average of the provided range (18-22 ft-lbs). Ensure the sensor is properly seated before tightening.
Exhaust Flange
1 Exhaust Flange Bolts (Mid-Pipe to Rear Pipe)
M10 x 1.5
1
Exhaust Flange Bolts (Mid-Pipe to Rear Pipe)
M10 x 1.5
Torque Specification
29.5 ft-lbs (40 N·m)
Important Notes
Torque value is an average of the provided range (25-34 ft-lbs). Ensure the gasket is properly seated before tightening.
Fuel
Torque specifications for Fuel
Fuel
Torque specifications for Fuel
Fuel Rail System
1 Fuel Rail Bolts
M8 x 1.25
1
Fuel Rail Bolts
M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque values are based on typical M8 bolts. Ensure bolts are tightened in a crisscross pattern.
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
Torque values are based on typical M6 bolts. Ensure injectors are properly seated before tightening.
Fuel Pump And Tank System
1 Fuel Pump Mounting Bolts
M8 x 1.25
1
Fuel Pump Mounting Bolts
M8 x 1.25
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Torque values are based on typical M8 bolts. Ensure the fuel pump is properly aligned before tightening.
2 Fuel Tank Strap Bolts
M10 x 1.5
2
Fuel Tank Strap Bolts
M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Torque values are based on typical M10 bolts. Ensure the fuel tank is properly supported before tightening.
3 Fuel Tank Sender Unit Bolts
M6 x 1.0
3
Fuel Tank Sender Unit Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque values are based on typical M6 bolts. Ensure the sender unit is properly seated before tightening.
Fuel Delivery System
1 Fuel Filler Neck Bolts
M6 x 1.0
1
Fuel Filler Neck Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque values are based on typical M6 bolts. Ensure the filler neck is properly aligned before tightening.
2 Fuel Filter Bolt/Nut
M10 x 1.5
2
Fuel Filter Bolt/Nut
M10 x 1.5
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Torque values are based on typical M10 bolts. Ensure the filter housing is properly seated before tightening.
3 Fuel Line Fittings (Banjo Bolts)
M12 x 1.5
3
Fuel Line Fittings (Banjo Bolts)
M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Torque values are based on typical M12 bolts. Ensure the banjo fitting is properly aligned before tightening.
Emissions Control System
1 Fuel Evaporative Canister Bolts
M6 x 1.0
1
Fuel Evaporative Canister Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque values are based on typical M6 bolts. Ensure the canister is properly aligned before tightening.
2 Fuel Line Clamp Bolts
M6 x 1.0
2
Fuel Line Clamp Bolts
M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque values are based on typical M6 bolts. Ensure the fuel line is properly positioned before tightening.
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
20 ft-lbs (27 N·m)
Important Notes
Torque value is the midpoint of the recommended range (18-22 ft-lbs).
2 A/C Compressor Clutch Bolt
M14 x 1.25
2
A/C Compressor Clutch Bolt
M14 x 1.25
Torque Specification
22.5 ft-lbs (30.5 N·m)
Important Notes
Torque value is the midpoint of the recommended range (20-25 ft-lbs).
A/C Condenser
1 A/C Condenser Mounting Bolts
M10 x 1.25
1
A/C Condenser Mounting Bolts
M10 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Torque value is the midpoint of the estimated range (10-15 ft-lbs).
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
Torque value is the midpoint of the estimated range (8-12 ft-lbs).
A/C Refrigerant Lines
1 A/C Refrigerant Line Bracket Bolts
M10 x 1.25
1
A/C Refrigerant Line Bracket Bolts
M10 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Torque value is the midpoint of the estimated range (10-15 ft-lbs).
2 A/C Line Fittings
M12 x 1.5
2
A/C Line Fittings
M12 x 1.5
Torque Specification
17.5 ft-lbs (23.75 N·m)
Important Notes
Torque value is the midpoint of the recommended range (15-20 ft-lbs).
Suspension
Torque specifications for Suspension
Suspension
Torque specifications for Suspension
Strut Shock Absorber
1 Strut/Shock Absorber Mounting Bolts
M12 x 1.5
1
Strut/Shock Absorber Mounting Bolts
M12 x 1.5
Torque Specification
72.5 ft-lbs (98.5 N·m)
Important Notes
Torque value is an average of the provided range (66-79 ft-lbs / 90-107 Nm).
2 Strut Tower Mounting Bolts
M10 x 1.25
2
Strut Tower Mounting Bolts
M10 x 1.25
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Torque value is an average of the provided range (40-50 ft-lbs / 54-68 Nm).
3 Lower Strut Mounting Bolts
M12 x 1.5
3
Lower Strut Mounting Bolts
M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is an average of the provided range (60-70 ft-lbs / 81-95 Nm).
Control Arm Ball Joint
1 Control Arm Bolts
M14 x 1.5
1
Control Arm Bolts
M14 x 1.5
Torque Specification
89 ft-lbs (121 N·m)
Important Notes
Torque value is an average of the provided range (83-95 ft-lbs / 113-129 Nm).
2 Ball Joint Nut
M12 x 1.25
2
Ball Joint Nut
M12 x 1.25
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Torque value is an average of the provided range (43-51 ft-lbs / 59-69 Nm).
Steering System
1 Tie Rod End Nut
M10 x 1.25
1
Tie Rod End Nut
M10 x 1.25
Torque Specification
36.5 ft-lbs (49.5 N·m)
Important Notes
Torque value is an average of the provided range (33-40 ft-lbs / 45-54 Nm).
2 Steering Gear/Rack Bolts
M12 x 1.5
2
Steering Gear/Rack Bolts
M12 x 1.5
Torque Specification
65.5 ft-lbs (89 N·m)
Important Notes
Torque value is an average of the provided range (59-72 ft-lbs / 80-98 Nm).
Sway Bar
1 Sway Bar Link Nut
M10 x 1.25
1
Sway Bar Link Nut
M10 x 1.25
Torque Specification
30 ft-lbs (40.5 N·m)
Important Notes
Torque value is an average of the provided range (27-33 ft-lbs / 36-45 Nm).
Wheel Hub
1 Wheel Lug Nuts
M12 x 1.5
1
Wheel Lug Nuts
M12 x 1.5
Torque Specification
90 ft-lbs (122 N·m)
Important Notes
Torque value is an average of the provided range (80-100 ft-lbs / 108-136 Nm). Always use a star pattern for tightening.
Rear Suspension
1 Rear Trailing Arm Bolts
M14 x 1.5
1
Rear Trailing Arm Bolts
M14 x 1.5
Torque Specification
77.5 ft-lbs (105 N·m)
Important Notes
Torque value is an average of the provided range (70-85 ft-lbs / 95-115 Nm).
2 Rear Lateral Link Bolts
M12 x 1.5
2
Rear Lateral Link Bolts
M12 x 1.5
Torque Specification
67.5 ft-lbs (91.5 N·m)
Important Notes
Torque value is an average of the provided range (60-75 ft-lbs / 81-102 Nm).
Subframe
1 Subframe Mounting Bolts
M14 x 1.5
1
Subframe Mounting Bolts
M14 x 1.5
Torque Specification
80 ft-lbs (108.5 N·m)
Important Notes
Torque value is an average of the provided range (70-90 ft-lbs / 95-122 Nm). Always use a crisscross pattern for 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 are the torque specifications for the lug nuts on a 2007-2011 Subaru Impreza?
Q1
What are the torque specifications for the lug nuts on a 2007-2011 Subaru Impreza?
The torque specification for the lug nuts on a 2007-2011 Subaru Impreza IS 80 ft-lbs (108 Nm).
Q2 What IS the recommended torque for the spark plugs on a 2007-2011 Subaru Impreza?
Q2
What IS the recommended torque for the spark plugs on a 2007-2011 Subaru Impreza?
The recommended torque for the spark plugs on a 2007-2011 Subaru Impreza IS 18 ft-lbs (24 Nm).
Q3 What tools do I need to properly torque the bolts on my 2007-2011 Subaru Impreza?
Q3
What tools do I need to properly torque the bolts on my 2007-2011 Subaru Impreza?
You will need a torque wrench, a socket set, and a torque specification guide specific to your vehicle.
Q4 How do I ensure that the bolts are properly torqued on my 2007-2011 Subaru Impreza?
Q4
How do I ensure that the bolts are properly torqued on my 2007-2011 Subaru Impreza?
Ensure that the torque wrench IS calibrated to the correct specifications, use the correct socket size, and follow the torque specifications for each bolt.
Q5 What are the consequences of not properly torquing the bolts on my 2007-2011 Subaru Impreza?
Q5
What are the consequences of not properly torquing the bolts on my 2007-2011 Subaru Impreza?
Improperly torqued bolts can lead to a variety of problems, including component failure, leaks, and safety hazards.
Q6 How often should I inspect and torque the bolts on my 2007-2011 Subaru Impreza?
Q6
How often should I inspect and torque the bolts on my 2007-2011 Subaru Impreza?
Regularly inspect and torque the bolts on your 2007-2011 Subaru Impreza, especially after any maintenance or repairs.
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 impreza.
- 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.
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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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