Subaru Vehicle Models Subaru Impreza 1992-2000 Torque Specifications
Subaru Vehicle Models Subaru Impreza 1992-2000

Subaru Vehicle Models Subaru Impreza 1992-2000 Torque Specifications

Complete Subaru Vehicle Models Subaru Impreza 1992-2000 torque specifications guide. Includes factory-specified torque values, torque sequences, and technical specifications for all components including body, brakes, drivetrain, electrical, emissions sensors, fuel, exhaust, HVAC, and suspension. Essential information for proper assembly and maintenance.

Updated

Important Information

Safety guidelines and reference information for proper torque application

Quick Reference Guide

ft-lbs → Nm
× 1.356
ft-lbs → kg-m
× 0.138
Nm → ft-lbs
× 0.738
in-lbs → ft-lbs
× 0.083

Common Torque Patterns

Star Pattern

Used for wheels and other circular bolt patterns

Star Pattern torque pattern diagram showing proper bolt tightening sequence
Cross Pattern

Used for gaskets and cover plates

Cross Pattern torque pattern diagram showing proper bolt tightening sequence
Sequential Pattern

Used for head bolts and other critical components

Sequential Pattern torque pattern diagram showing proper bolt tightening sequence

Common Mistakes to Avoid

Over-tightening

Exceeding the specified torque value can stretch or break fasteners, damage threads, or crack components.

Prevention:

Always use a calibrated torque wrench and follow specifications exactly.

Incorrect Torque Sequence

Tightening bolts in the wrong order can cause uneven pressure distribution and potential leaks or damage.

Prevention:

Follow the manufacturer's specified torque sequence pattern.

Dirty Threads

Dirt, rust, or old thread locker can affect torque readings and proper fastener tension.

Prevention:

Clean and inspect all threads before assembly. Use new thread locker if specified.

Reusing TTY Bolts

Torque-to-yield bolts are designed to stretch and must not be reused.

Prevention:

Always replace TTY bolts with new ones. They are single-use only.

Dry vs. Lubricated

Not accounting for whether torque specs are for dry or lubricated fasteners can lead to incorrect tension.

Prevention:

Check if specs are for dry or lubricated threads. Use specified lubricant when required.

Recommended Tools

Torque Wrench (1/4" Drive)

Range: 2-25 ft-lbs
Small fasteners, delicate components

Torque Wrench (3/8" Drive)

Range: 10-100 ft-lbs
Most common automotive fasteners

Torque Wrench (1/2" Drive)

Range: 30-250 ft-lbs
Large fasteners, wheels

Angle Gauge

Torque-to-yield (TTY) bolts

Torque Wrench Care

  • Calibrate annually or after 5,000 clicks
  • Store at lowest setting
  • Keep clean and lubricated

Search Specifications

Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

1.6l H4 Engine

Torque specifications for 1.6L-H4 Engine

Cylinder Head and Engine Block

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
25.5 ft-lbs (34.6 N·m)
Important Notes
Estimated value, actual value may vary depending on engine and application.
2

Cylinder Head Studs

M10 x 1.25
Torque Specification
35 ft-lbs (47.4 N·m)
Important Notes
Estimated value, actual value may vary depending on engine and application.

Main Bearings and Crankshaft

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
52.5 ft-lbs (71.2 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Specification
94 ft-lbs (127.4 N·m)

Valvetrain and Timing System

1

Camshaft Sprocket Bolt

M12 x 1.25
Torque Specification
46.5 ft-lbs (63 N·m)
2

Timing Belt/Chain Tensioner Bolt

M10 x 1.25
Torque Specification
23.5 ft-lbs (31.9 N·m)

Engine Mounts and Oil Pan

1

Engine Mounting Bolts

M12 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated value, actual value may vary depending on engine and application.
2

Oil Pan Bolts

M8 x 1.25
Torque Specification
4.5 ft-lbs (6.1 N·m)

Fuel and Ignition System

1

Fuel Injector Bolts

M8 x 1.25
Torque Specification
14 ft-lbs (19 N·m)
2

Spark Plugs

M14 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)

1.8l H4 Engine

Torque specifications for 1.8L-H4 Engine

Engine Block and Cylinder Head

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
25.5 ft-lbs (34.5 N·m)
Important Notes
Estimated average value from 22-29 ft-lbs (30-40 Nm) range.
2

Cylinder Head to Engine Block Studs

M14 x 1.5
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Estimated average value from 30-40 ft-lbs (41-54 Nm) range.

Engine Mounts and Transmission

1

Engine Mounting Bolts

M16 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated average value from 40-50 ft-lbs (54-68 Nm) range.
2

Engine Block to Transmission Bolts

M14 x 1.5
Torque Specification
35 ft-lbs (47.5 N·m)
Important Notes
Estimated average value from 30-40 ft-lbs (41-54 Nm) range.

Crankshaft and Camshaft

1

Main Bearing Bolts

M18 x 1.5
Torque Specification
52.5 ft-lbs (71.25 N·m)
Important Notes
Estimated average value from 50-55 ft-lbs (68-75 Nm) range.
2

Crankshaft Pulley/Harmonic Balancer Bolt

M20 x 1.5
Torque Specification
94 ft-lbs (127.5 N·m)
Important Notes
Estimated average value from 87-101 ft-lbs (118-137 Nm) range.
3

Camshaft Sprocket Bolt

M16 x 1.5
Torque Specification
46.5 ft-lbs (63 N·m)
Important Notes
Estimated average value from 43-50 ft-lbs (58-68 Nm) range.

Valvetrain and Intake/Exhaust

1

Valve Cover Bolts

M10 x 1.5
Torque Specification
4 ft-lbs (5.5 N·m)
Important Notes
Estimated average value from 3-5 ft-lbs (4-7 Nm) range.
2

Intake Manifold Bolts

M12 x 1.5
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Estimated average value from 13-15 ft-lbs (18-20 Nm) range.
3

Exhaust Manifold/Headers Bolts

M12 x 1.5
Torque Specification
25.5 ft-lbs (34.5 N·m)
Important Notes
Estimated average value from 22-29 ft-lbs (30-40 Nm) range.

Accessories and Sensors

1

Crankshaft Position Sensor Bolt

M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated average value from 10-15 ft-lbs (14-20 Nm) range.
2

Camshaft Position Sensor Bolt

M8 x 1.25
Torque Specification
12.5 ft-lbs (17 N·m)
Important Notes
Estimated average value from 10-15 ft-lbs (14-20 Nm) range.
3

Water Pump Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20.25 N·m)
Important Notes
Estimated average value from 14-16 ft-lbs (19-22 Nm) range.

2.0l H4 Engine

Torque specifications for 2.0L-H4 Engine

Cylinder Head

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Torque value range: 22-29 ft-lbs (30-40 Nm)
2

Engine Block to Cylinder Head Dowel Pins

M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated torque value range: 10-15 ft-lbs (14-20 Nm)

Main Bearing

1

Main Bearing Bolts

M14 x 1.5
Torque Specification
52 ft-lbs (71 N·m)
Important Notes
Torque value range: 50-55 ft-lbs (68-75 Nm)

Connecting Rod

1

Connecting Rod Nuts

M12 x 1.5
Torque Specification
31 ft-lbs (42 N·m)
Important Notes
Torque value range: 29-33 ft-lbs (40-45 Nm)

Flywheel

1

Flywheel Bolts

M14 x 1.5
Torque Specification
62 ft-lbs (84 N·m)
Important Notes
Torque value range: 58-65 ft-lbs (78-88 Nm)

Oil Pan

1

Oil Pan Bolts

M10 x 1.25
Torque Specification
4 ft-lbs (6 N·m)
Important Notes
Torque value range: 4-5 ft-lbs (6-7 Nm)

Valve Cover

1

Valve Cover Bolts

M8 x 1.25
Torque Specification
4 ft-lbs (6 N·m)
Important Notes
Torque value range: 3-5 ft-lbs (4-7 Nm)

Timing Belt Chain

1

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
24 ft-lbs (33 N·m)
Important Notes
Torque value range: 20-27 ft-lbs (27-37 Nm)

Camshaft

1

Camshaft Sprocket Bolt

M14 x 1.5
Torque Specification
47 ft-lbs (64 N·m)
Important Notes
Torque value range: 43-50 ft-lbs (58-68 Nm)

Crankshaft

1

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 1.5
Torque Specification
94 ft-lbs (127 N·m)
Important Notes
Torque value range: 87-101 ft-lbs (118-137 Nm)

Spark Plugs

1

Spark Plugs

M14 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value range: 14-22 ft-lbs (20-30 Nm)

Rocker Arms Shafts

1

Rocker Arms/Shafts Bolts

M10 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque value range: 15-17 ft-lbs (20-23 Nm)

Water Pump

1

Water Pump Bolts

M10 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Torque value range: 14-16 ft-lbs (19-22 Nm)

Thermostat Housing

1

Thermostat Housing Bolts

M8 x 1.25
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque value range: 7-9 ft-lbs (9-12 Nm)

Oil Filter Housing

1

Oil Filter Housing Bolt

M12 x 1.5
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque value range: 13-18 ft-lbs (18-25 Nm)

Oil Drain Plug

1

Oil Drain Plug Bolt

M12 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Torque value range: 22-29 ft-lbs (30-40 Nm)

Crankshaft Position Sensor

1

Crankshaft Position Sensor Bolt

M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated torque value range: 10-15 ft-lbs (14-20 Nm)

Camshaft Position Sensor

1

Camshaft Position Sensor Bolt

M8 x 1.25
Torque Specification
12 ft-lbs (16 N·m)
Important Notes
Estimated torque value range: 10-15 ft-lbs (14-20 Nm)

Engine Mounting

1

Engine Mounting Bolts

M14 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Estimated torque value range: 40-50 ft-lbs (54-68 Nm)

2.2l H4 Engine

Torque specifications for 2.2L-H4 Engine

Cylinder Head and Valvetrain

1

Cylinder Head Bolts

M12 x 1.5
Torque Specification
22 ft-lbs (30 N·m)
2

Valve Cover Bolts

M8 x 1.25
Torque Specification
3 ft-lbs (4 N·m)
3

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)

Engine Block and Bearings

1

Main Bearing Bolts

M14 x 2.0
Torque Specification
50 ft-lbs (68 N·m)
2

Connecting Rod Nuts

M12 x 1.5
Torque Specification
29 ft-lbs (40 N·m)

Crankshaft and Pulley

1

Flywheel Bolts

M14 x 2.0
Torque Specification
58 ft-lbs (78 N·m)
2

Crankshaft Pulley/Harmonic Balancer Bolt

M16 x 2.0
Torque Specification
87 ft-lbs (118 N·m)

Timing and Accessory Components

1

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Specification
20 ft-lbs (27 N·m)
2

Camshaft Sprocket Bolt

M14 x 2.0
Torque Specification
43 ft-lbs (58 N·m)

Engine Mounting and Accessories

1

Engine Mounting Bolts

M14 x 2.0
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Estimated value based on general industry standards.
2

Oil Pan Bolts

M10 x 1.5
Torque Specification
4 ft-lbs (6 N·m)

Intake and Exhaust Components

1

Intake Manifold Bolts

M10 x 1.5
Torque Specification
13 ft-lbs (18 N·m)
2

Exhaust Manifold/Headers Bolts

M12 x 1.5
Torque Specification
22 ft-lbs (30 N·m)

Fuel and Ignition Components

1

Fuel Rail Bolts

M10 x 1.5
Torque Specification
14 ft-lbs (19 N·m)
2

Fuel Injector Bolts

M8 x 1.25
Torque Specification
13 ft-lbs (18 N·m)
3

Ignition Coil Bolt

M8 x 1.25
Torque Specification
6 ft-lbs (8 N·m)

4eat Transmission

Torque specifications for 4eat Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M14 x 1.5
Torque Specification
50.5 ft-lbs (68.5 N·m)
Important Notes
Estimated value based on similar components and bolt sizes.

Transmission Oil System

1

Transmission Oil Pan Bolts

M10 x 1.25
Torque Specification
4.5 ft-lbs (6.1 N·m)
2

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Specification
32.5 ft-lbs (44 N·m)

Transmission Case and Valve Body

1

4EAT Transmission Case Bolts

M12 x 1.5
Torque Specification
37.5 ft-lbs (50.8 N·m)
Important Notes
Estimated value based on industry standards.
2

4EAT Transmission Valve Body Bolts

M10 x 1.25
Torque Specification
11 ft-lbs (14.9 N·m)
Important Notes
Estimated value based on industry standards.

Transmission Filter and Cooler Lines

1

4EAT Transmission Filter Bolts

M10 x 1.25
Torque Specification
11 ft-lbs (14.9 N·m)
Important Notes
Estimated value based on industry standards.
2

4EAT Transmission Cooler Line Fittings

M12 x 1.5
Torque Specification
17.5 ft-lbs (23.7 N·m)
Important Notes
Estimated value based on industry standards.

Body

Torque specifications for Body

Suspension And Steering

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
70 ft-lbs (95 N·m)
Important Notes
Ensures wheels remain securely attached during operation. Critical for safety.
2

Strut/Shock Absorber Mounting Bolts

M10 x 1.25
Torque Specification
60 ft-lbs (82 N·m)
Important Notes
Ensures stability and proper suspension function.
3

Control Arm Bolts

M10 x 1.25
Torque Specification
60 ft-lbs (82 N·m)
Important Notes
Ensures alignment and stability of the suspension system.
4

Ball Joint Nut

M8 x 1.0
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Ensures proper steering and suspension function.
5

Tie Rod End Nut

M6 x 1.0
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensures precise steering control and alignment.
6

Sway Bar Link Nut

M5 x 0.8
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Ensures stability during cornering and reduces body roll.
7

Steering Gear/Rack Bolts

M10 x 1.25
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Ensures precise steering control and alignment.

Fuel And Electrical

1

Fuel Tank Strap Bolts

M6 x 1.0
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensures the fuel tank remains securely mounted, preventing leaks or detachment.
2

Fuel Filler Neck Bolts

M4 x 0.7
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Ensures a secure connection and prevents fuel leaks.
3

Battery Terminal Nuts

M4 x 0.7
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Ensures a reliable electrical connection and prevents corrosion or loose connections.

Body Panels And Interior

1

Body Panel Bolts (e.g., fender, door hinges, hood hinges)

M5 x 0.8
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Ensures panels remain securely attached and aligned, preventing rattles or misalignment.
2

Seat Belt Anchorage Bolts

M8 x 1.0
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Critical for passenger safety, ensuring the seat belts function correctly in the event of a collision.
3

Bumper Mounting Bolts

M6 x 1.0
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensures the bumper remains securely attached and aligned, providing protection in the event of a collision.
4

Roof Rack Mounting Bolts

M5 x 0.8
Torque Specification
17 ft-lbs (23 N·m)
Important Notes
Ensures the roof rack remains securely attached, preventing damage or detachment during use.

Brakes

Torque specifications for Brakes

Brake Caliper

1

Brake Caliper Bolts

M10 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Torque value is estimated based on typical M10 bolt specifications for brake calipers.
2

Brake Caliper Mounting Bracket Bolts

M12 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Torque value is estimated based on typical M12 bolt specifications for mounting brackets.

Brake Disc Drum

1

Brake Disc/Drum Retaining Bolts

M10 x 1.25
Torque Specification
53 ft-lbs (72 N·m)
Important Notes
Torque value is estimated based on typical M10 bolt specifications for brake discs/drums.

Wheel Attachment

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is estimated based on typical M12 bolt specifications for wheel lug nuts.

Brake Pedal

1

Brake Pedal Mounting Bolts

M8 x 1.25
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Torque value is estimated based on typical M8 bolt specifications for brake pedal assemblies.

Brake Hydraulics

1

Brake Line Fittings

M10 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Torque value is estimated based on typical M10 brake line fitting specifications.
2

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Torque value is estimated based on typical M8 bolt specifications for master cylinders.
3

Brake Booster Mounting Bolts

M10 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Torque value is estimated based on typical M10 bolt specifications for brake boosters.

Drivetrain

Torque specifications for Drivetrain

Flywheel

1

Flywheel Bolts

M10 x 1.25
Torque Specification
61.5 ft-lbs (83 N·m)
Important Notes
Torque value is an average of the provided range (58-65 ft-lbs / 78-88 Nm).

Transmission Mounting

1

Transmission Mounting Bolts

M10 x 1.5
Torque Specification
50.5 ft-lbs (69 N·m)
Important Notes
Torque value is an average of the provided range (47-54 ft-lbs / 64-74 Nm).

Drive Axle

1

Drive Axle/Half Shaft Bolts

M10 x 1.25
Torque Specification
50.5 ft-lbs (69 N·m)
Important Notes
Torque value is an average of the provided range (47-54 ft-lbs / 64-74 Nm).
2

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
144.5 ft-lbs (196 N·m)
Important Notes
Torque value is an average of the provided range (137-152 ft-lbs / 186-206 Nm).

Propeller Shaft

1

Propeller/Drive Shaft Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque value is an average of the provided range (15-17 ft-lbs / 20-23 Nm).

Fluid System

1

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Specification
32.5 ft-lbs (44 N·m)
Important Notes
Torque value is an average of the provided range (29-36 ft-lbs / 39-49 Nm).
2

Differential Drain/Fill Plug

M14 x 1.5
Torque Specification
39.5 ft-lbs (54 N·m)
Important Notes
Torque value is an average of the provided range (36-43 ft-lbs / 49-59 Nm).
3

Transfer Case Drain/Fill Plug

M12 x 1.5
Torque Specification
32.5 ft-lbs (44 N·m)
Important Notes
Torque value is an average of the provided range (29-36 ft-lbs / 39-49 Nm).

Differential Mounting

1

Differential Mounting Bolts

M10 x 1.5
Torque Specification
50.5 ft-lbs (69 N·m)
Important Notes
Torque value is an average of the provided range (47-54 ft-lbs / 64-74 Nm).

Transfer Case Mounting

1

Transfer Case Mounting Bolts

M10 x 1.5
Torque Specification
50.5 ft-lbs (69 N·m)
Important Notes
Torque value is an average of the provided range (47-54 ft-lbs / 64-74 Nm).

Pinion Flange

1

Rear Differential Pinion Flange Bolts

M12 x 1.75
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is an average of the provided range (58-72 ft-lbs / 78-98 Nm).
2

Front Differential Pinion Flange Bolts

M12 x 1.75
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is an average of the provided range (58-72 ft-lbs / 78-98 Nm).

Transmission Bellhousing

1

Transmission Bellhousing Bolts

M10 x 1.5
Torque Specification
50.5 ft-lbs (69 N·m)
Important Notes
Torque value is an average of the provided range (47-54 ft-lbs / 64-74 Nm).

Electrical

Torque specifications for Electrical

Ignition System

1

Ignition Coil Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (9.5 N·m)
Important Notes
Torque value is an average estimate based on typical M6 bolts in ignition systems.

Starting System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
31 ft-lbs (42 N·m)
Important Notes
Torque value is an average estimate based on typical M10 bolts in starter motor applications.

Charging System

1

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
31 ft-lbs (42 N·m)
Important Notes
Torque value is an average estimate based on typical M10 bolts in alternator applications.

Battery System

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Torque value is an average estimate based on typical M6 bolts in battery terminal applications.

Grounding System

1

Grounding Point Bolts

M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Torque value is an average estimate based on typical M6 bolts in grounding applications.

Engine Management System

1

ECU Mounting Bolts

M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Torque value is an average estimate based on typical M6 bolts in ECU applications.
2

Sensor Mounting Bolts (e.g., Crankshaft Position Sensor)

M6 x 1.0
Torque Specification
8.5 ft-lbs (11.5 N·m)
Important Notes
Torque value is an average estimate based on typical M6 bolts in sensor applications.

Fuse And Relay System

1

Fuse Box Mounting Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Torque value is an average estimate based on typical M6 bolts in fuse box applications.

Emissions Sensors

Torque specifications for Emissions_sensors

Egr System

1

EGR Valve Bolts

M8 x 1.25
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Estimated value based on typical M8 bolt torque for emissions components.
2

EGR Pipe Bolts

M8 x 1.25
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Estimated value based on typical M8 bolt torque for emissions components.

Exhaust Manifold System

1

Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for exhaust components.
2

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.5
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for exhaust components.

Exhaust Pipe System

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for exhaust components.
2

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for exhaust components.

Oxygen Sensor System

1

Oxygen Sensor (O2 Sensor) Bolts

M10 x 1.5
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Estimated value based on typical M10 bolt torque for exhaust components.

Air Injection System

1

Air Injection System Bolts

M6 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Estimated value based on typical M6 bolt torque for emissions components.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.25
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Torque value is an average of the provided range (22-29 ft-lbs).
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.25
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Torque value is an average of the provided range (22-29 ft-lbs).

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Torque value is an average of the provided range (22-29 ft-lbs).

Muffler

1

Muffler to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Torque value is an average of the provided range (22-29 ft-lbs).

Egr Valve

1

EGR Valve Bolts

M8 x 1.25
Torque Specification
18.5 ft-lbs (25 N·m)
Important Notes
Torque value is an average of the provided range (17-20 ft-lbs).

Heat Shield

1

Exhaust Heat Shield Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Torque value is an average of the provided range (7-9 ft-lbs).

Oxygen Sensor

1

Oxygen Sensor (O2 Sensor)

M12 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Torque value is an average of the provided range (30-40 ft-lbs).

Exhaust Flange

1

Exhaust Flange Bolts (Downpipe to Midpipe)

M10 x 1.25
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Torque value is an average of the provided range (22-29 ft-lbs).

Exhaust Hanger

1

Exhaust Hanger Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque value is an average of the provided range (14-18 ft-lbs).

Fuel

Torque specifications for Fuel

Fuel Delivery System

1

Fuel Rail Bolts

M8 x 1.25
Torque Specification
14.5 ft-lbs (20 N·m)
Important Notes
Ensures proper fuel delivery and prevents leaks.
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Ensures a proper seal and prevents fuel leaks.
3

Fuel Pump Mounting Bolts

M6 x 1.0
Torque Specification
13.5 ft-lbs (18 N·m)
Important Notes
Ensures the fuel pump is securely mounted and prevents leaks.

Fuel Storage System

1

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
31 ft-lbs (42 N·m)
Important Notes
Ensures the fuel tank is securely mounted and prevents movement or leaks.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (14 N·m)
Important Notes
Ensures a tight seal and prevents fuel vapor leaks.

Fuel Filtration System

1

Fuel Filter Bolt/Nut

M8 x 1.25
Torque Specification
25.5 ft-lbs (35 N·m)
Important Notes
Ensures the fuel filter is securely mounted and prevents leaks.

Fuel Regulation System

1

Fuel Pressure Regulator Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value. Ensures the fuel pressure regulator is securely mounted and maintains correct fuel pressure.
2

Fuel Return Line Bolts

M6 x 1.0
Torque Specification
13 ft-lbs (18 N·m)
Important Notes
Estimated value. Ensures a secure connection and prevents fuel leaks.

Fuel Level Monitoring System

1

Fuel Tank Sender Unit Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value. Ensures accurate fuel level readings and prevents leaks.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.25
Torque Specification
31 ft-lbs (42 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute load.

Ac Lines

1

A/C Line Fittings

M8 x 1.25
Torque Specification
13 ft-lbs (18 N·m)
Important Notes
Ensure fittings are clean and free of debris before tightening.

Evaporator

1

Evaporator Housing Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Blower Motor

1

Blower Motor Mounting Bolts

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Heater Core

1

Heater Core Inlet/Outlet Fittings

M8 x 1.25
Torque Specification
13 ft-lbs (18 N·m)
Important Notes
Ensure fittings are clean and free of debris before tightening.

Condenser

1

Condenser Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (11 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Control Panel

1

HVAC Control Panel Mounting Screws

M4 x 0.7
Torque Specification
3 ft-lbs (4 N·m)
Important Notes
Estimated value based on similar M4 screws in HVAC systems.

Suspension

Torque specifications for Suspension

Strut Shock Absorber

1

Strut/Shock Absorber Mounting Bolts

M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Torque value is the midpoint of the provided range (55-63 ft-lbs / 75-85 Nm).
2

Lower Strut Mount Bolts

M12 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Torque value is the midpoint of the provided range (50-60 ft-lbs / 68-81 Nm).
3

Upper Strut Mount Nuts

M10 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Torque value is the midpoint of the provided range (14-18 ft-lbs / 19-24 Nm).

Control Arms

1

Control Arm Bolts

M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Torque value is the midpoint of the provided range (55-63 ft-lbs / 75-85 Nm).
2

Ball Joint Nut

M10 x 1.25
Torque Specification
40 ft-lbs (54 N·m)
Important Notes
Torque value is the midpoint of the provided range (36-43 ft-lbs / 49-59 Nm).

Steering System

1

Tie Rod End Nut

M10 x 1.25
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Torque value is the midpoint of the provided range (29-36 ft-lbs / 39-49 Nm).
2

Steering Gear/Rack Bolts

M12 x 1.5
Torque Specification
53 ft-lbs (72 N·m)
Important Notes
Torque value is the midpoint of the provided range (48-58 ft-lbs / 65-79 Nm).

Sway Bar

1

Sway Bar Link Nut

M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Torque value is the midpoint of the provided range (22-29 ft-lbs / 30-40 Nm).

Wheels

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is the midpoint of the provided range (58-72 ft-lbs / 78-98 Nm). Always use a star pattern when tightening lug nuts.

Subframe

1

Subframe Bolts

M14 x 1.5
Torque Specification
75 ft-lbs (102 N·m)
Important Notes
Torque value is the midpoint of the provided range (70-80 ft-lbs / 95-108 Nm). Always follow the manufacturer's recommended torque sequence.

Rear Suspension

1

Rear Trailing Arm Bolts

M12 x 1.5
Torque Specification
60 ft-lbs (81 N·m)
Important Notes
Torque value is the midpoint of the provided range (55-65 ft-lbs / 75-88 Nm).
2

Rear Lateral Link Bolts

M12 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Torque value is the midpoint of the provided range (50-60 ft-lbs / 68-81 Nm).

Troubleshooting Guide

Common issues, diagnostic steps, and prevention guidelines

Common Issues

Bolt stretching, stripped threads, uneven torque patterns

Loose Components

Symptoms:
  • Rattling or vibration noises
  • Visible movement in components
  • Uneven panel gaps
Solutions:
  • Clean threads and mounting surfaces
  • Replace damaged fasteners
  • Apply proper torque in sequence
  • Use thread locker if specified

Stripped Fasteners

Symptoms:
  • Unable to achieve proper torque
  • Fastener spins freely
  • Visible thread damage
Solutions:
  • Use thread repair kit if appropriate
  • Install thread insert (HeliCoil)
  • Replace component if threaded hole is damaged
  • Upgrade to higher grade fastener if recommended

Overtightened Components

Symptoms:
  • Cracked or deformed parts
  • Broken fasteners
  • Compressed gaskets or seals
Solutions:
  • Replace damaged components
  • Use new fasteners
  • Follow proper torque sequence
  • Verify correct torque specifications

Diagnostic Steps

Visual inspection, torque verification, thread assessment

1

Visual Inspection

Inspect the affected area for any visible signs of damage or wear

  • Check for cracks or deformation
  • Look for signs of excessive wear
  • Verify proper fastener installation
2

Torque Verification

Verify the torque applied to the fasteners

  • Check the torque wrench calibration
  • Verify the torque specification
  • Compare the applied torque to the specification
3

Thread Assessment

Assess the condition of the threads

  • Check for signs of thread damage
  • Verify the thread type and size
  • Check for proper thread engagement

Prevention Guidelines

Best practices, maintenance tips, tool care

Best Practices

  • Always follow the recommended torque specification
  • Use the correct type and size of fasteners
  • Verify the torque wrench calibration regularly

Maintenance Tips

  • Regularly inspect the affected area for signs of wear or damage
  • Replace damaged or worn-out components promptly
  • Keep the work area clean and organized

Tool Care

  • Regularly clean and maintain the torque wrench
  • Store the torque wrench in a dry and secure location
  • Verify the torque wrench calibration before each use

Frequently Asked Questions

Find answers to common questions about torque specifications

Q1

What IS the recommended torque for the lug nuts on my 1992-2000 Subaru Impreza?

The recommended torque for the lug nuts on a 1992-2000 Subaru Impreza IS 85 ft-lbs.

Q2

What IS the torque spec for the spark plugs in my 1992-2000 Subaru Impreza?

The torque spec for the spark plugs in a 1992-2000 Subaru Impreza IS 18 ft-lbs.

Q3

What IS the torque spec for the oil pan drain plug on my 1992-2000 Subaru Impreza?

The torque spec for the oil pan drain plug on a 1992-2000 Subaru Impreza IS 22 ft-lbs.

Q4

What type of torque wrench should I use to tighten bolts on my 1992-2000 Subaru Impreza?

It IS recommended to use a click-type torque wrench to ensure accurate torque application on your 1992-2000 Subaru Impreza.

Q5

IS it important to follow the specified torque values for my 1992-2000 Subaru Impreza?

Yes, it IS crucial to adhere to the specified torque values for your 1992-2000 Subaru Impreza to prevent damage to components, ensure proper assembly, and maintain vehicle safety.

Q6

Can I use a regular wrench to tighten bolts on my 1992-2000 Subaru Impreza?

While it IS possible to use a regular wrench, it IS not recommended as it can be difficult to achieve accurate torque values and could lead to over-tightening or under-tightening.

Environmental Considerations

Temperature, humidity, and seasonal effects on torque specifications

Temperature Effects

Includes: High Heat, Cold Weather, Thermal Cycling

Temperature can significantly impact torque values and fastener behavior

Cold Weather

Effects:
  • Increased material brittleness
  • Higher torque required due to thread contraction
  • Reduced thread lubricant effectiveness
Recommendations:
  • Allow components to warm to room temperature when possible
  • Consider using winter-grade thread lubricants
  • Check torque values more frequently during winter months

Hot Weather

Effects:
  • Thermal expansion of components
  • Decreased friction in threads
  • Accelerated lubricant breakdown
Recommendations:
  • Check torque when components are at normal operating temperature
  • Use temperature-resistant thread lockers
  • Consider re-torquing after heat cycles

Humidity and Corrosion

Covers: Rust Prevention, Salt Exposure, Moisture Control

Moisture and corrosion can affect fastener integrity and torque values

High Humidity

Effects:
  • Accelerated corrosion formation
  • Reduced friction coefficient
  • Potential thread seizing
Prevention:
  • Use corrosion-resistant fasteners
  • Apply appropriate anti-seize compounds
  • Maintain proper protective coatings

Salt Exposure

Effects:
  • Rapid corrosion development
  • Thread damage
  • Seized fasteners
Prevention:
  • Regular underbody washing
  • Use of sacrificial anodes where appropriate
  • Application of protective coatings

Seasonal Maintenance

Spring, Summer, Fall, and Winter maintenance schedules

Spring

  • Inspect for winter damage
  • Clean and protect exposed fasteners
  • Check torque on critical components

Summer

  • Monitor heat-affected components
  • Check expansion-related loosening
  • Inspect cooling system mounts

Fall

  • Prepare for winter conditions
  • Apply corrosion protection
  • Verify all fasteners are properly torqued

Winter

  • More frequent inspection of critical fasteners
  • Check for salt damage
  • Monitor suspension component torque

Related Resources

Tools, service procedures, and technical bulletins

Recommended Tools

Digital Torque Wrench (10-100 Nm)

Recommended for precise tightening of fasteners within the specified torque range, ensuring proper assembly and preventing damage.

  • Digital display for accurate readings
  • Audible signal when target torque IS reached
Learn more
Service Procedures

Engine Components Torque Specifications

Refer to the following table for tightening torque values for specific engine components.

View full procedure

Suspension and Steering Torque Specifications

Tighten suspension and steering components to the specified torque values for optimal performance and safety.

View full procedure

Brake System Torque Specifications

Ensure the proper functioning and safety of the braking system by following the recommended torque values when tightening its components.

View full procedure
Technical Service Bulletins

Legal Disclaimer

Important information about using this content

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

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

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

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

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

About the Author

Expert automotive knowledge and experience

Alan Montanye - Automotive Technical Specialist
ASE

Alan Montanye

Automotive Technical Specialist

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

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

Diagnostic

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

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

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

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

© 2025 Subaru Specs. All rights reserved.