Subaru Vehicle Models Subaru Outback 1994-1999 Torque Specifications
Subaru Vehicle Models Subaru Outback 1994-1999

Subaru Vehicle Models Subaru Outback 1994-1999 Torque Specifications

Complete Subaru Vehicle Models Subaru Outback 1994-1999 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

2.2l H4 Engine

Torque specifications for 2.2L-H4 Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.25
Torque Specification
1. 26 ft-lbs (35 N·m) 2. 32 ft-lbs (43 N·m)
Important Notes
Follow the manufacturer's torque sequence to ensure even clamping force.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
4.5 ft-lbs (6 N·m)
Important Notes
Ensure the valve cover gasket is properly seated before tightening.

Crankshaft And Bearings

1

Main Bearing Bolts

M10 x 1.25
Torque Specification
54 ft-lbs (73 N·m)
Important Notes
Follow the manufacturer's torque sequence to ensure even clamping force.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Ensure the connecting rod bearings are properly installed.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
27 ft-lbs (36 N·m)
Important Notes
Ensure the tensioner is properly aligned before tightening.
2

Camshaft Sprocket Bolt

M12 x 1.25
Torque Specification
58 ft-lbs (78 N·m)
Important Notes
Ensure the camshaft sprocket is properly aligned with the timing marks.

Oil System

1

Oil Pan Bolts

M6 x 1.0
Torque Specification
5.5 ft-lbs (7.5 N·m)
Important Notes
Ensure the oil pan gasket is properly seated before tightening.
2

Oil Pump Bolts

M8 x 1.25
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Estimated value based on similar components.

2.5l H4 Engine

Torque specifications for 2.5L-H4 Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.25
Torque Specification
1. 26 ft-lbs (35 N·m) 2. 32 ft-lbs (43 N·m)
Important Notes
Follow the manufacturer's specified torque sequence to avoid warping the cylinder head.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
0.36 ft-lbs (0.5 N·m)
Important Notes
Over-tightening can damage the gasket. Torque values are estimated based on bolt size and application.

Crankshaft Assembly

1

Main Bearing Bolts

M12 x 1.5
Torque Specification
54 ft-lbs (73 N·m)
Important Notes
Follow the manufacturer's specified torque sequence to ensure proper crankshaft alignment.
2

Connecting Rod Nuts

M8 x 1.25
Torque Specification
32 ft-lbs (43 N·m)
Important Notes
Ensure proper bearing clearance before tightening.
3

Flywheel Bolts

M10 x 1.25
Torque Specification
48 ft-lbs (65 N·m)
Important Notes
Ensure the flywheel is properly aligned before tightening.

Timing System

1

Timing Belt Tensioner Bolt

M8 x 1.25
Torque Specification
27 ft-lbs (36 N·m)
Important Notes
Ensure proper belt tension before tightening.
2

Camshaft Sprocket Bolt

M10 x 1.25
Torque Specification
58 ft-lbs (78 N·m)
Important Notes
Ensure proper timing alignment before tightening.

Oil System

1

Oil Pan Bolts

M6 x 1.0
Torque Specification
0.51 ft-lbs (0.7 N·m)
Important Notes
Over-tightening can damage the gasket. Torque values are estimated based on bolt size and application.
2

Oil Drain Plug Bolt

M14 x 1.5
Torque Specification
29 ft-lbs (40 N·m)
Important Notes
Ensure the oil pan is clean and the gasket is in good condition.

4eat Transmission

Torque specifications for 4eat Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M10 x 1.25
Torque Specification
37.5 ft-lbs (50.5 N·m)
Important Notes
Ensure proper alignment of the transmission before tightening. Torque in a crisscross pattern.

Oil Pan

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7.5 ft-lbs (10.2 N·m)
Important Notes
Torque in a crisscross pattern to avoid warping the oil pan sealing surface.

Fluid Management

1

Transmission Drain Plug

M12 x 1.5
Torque Specification
37.5 ft-lbs (50.5 N·m)
Important Notes
Ensure the drain plug is properly seated before tightening.
2

Transmission Fill Plug

M12 x 1.5
Torque Specification
37.5 ft-lbs (50.5 N·m)
Important Notes
Ensure the fill plug is properly seated before tightening.
3

Transmission Cooler Line Fittings

M10 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)
Important Notes
Ensure proper alignment of the cooler lines before tightening.

Drivetrain Connection

1

Drive Axle/Half Shaft Bolts

M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque in a crisscross pattern to ensure even clamping force.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
166.5 ft-lbs (226 N·m)
Important Notes
Ensure the axle is properly seated before tightening.

Starter Motor

1

Starter Motor Mounting Bolts

M8 x 1.25
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure proper alignment of the starter motor before tightening.

Torque Converter

1

Torque Converter Bolts

M8 x 1.25
Torque Specification
25.5 ft-lbs (34.5 N·m)
Important Notes
Ensure proper alignment of the torque converter before tightening.

Bellhousing

1

Transmission Bellhousing Bolts

M10 x 1.25
Torque Specification
37.5 ft-lbs (50.5 N·m)
Important Notes
Ensure proper alignment of the transmission and engine before tightening.

Valve Body

1

Transmission Valve Body Bolts

M6 x 1.0
Torque Specification
7.5 ft-lbs (10.2 N·m)
Important Notes
Torque in a crisscross pattern to ensure even clamping force.

Shift Linkage

1

Transmission Shift Linkage Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)
Important Notes
Ensure proper alignment of the shift linkage before tightening.

Body

Torque specifications for Body

Suspension And Steering

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 specified range (58-72 ft-lbs).
2

Strut/Shock Absorber Mounting Bolts

M10 x 1.25
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is the midpoint of the specified range (61-69 ft-lbs).
3

Control Arm Bolts

M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is the midpoint of the specified range (58-72 ft-lbs).
4

Ball Joint Nut

M10 x 1.25
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is the midpoint of the specified range (61-69 ft-lbs).
5

Tie Rod End Nut

M8 x 1.25
Torque Specification
37.5 ft-lbs (51 N·m)
Important Notes
Torque value is the midpoint of the specified range (32-43 ft-lbs).
6

Sway Bar Link Nut

M8 x 1.25
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Torque value is the midpoint of the specified range (29-43 ft-lbs).
7

Steering Gear/Rack Bolts

M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is the midpoint of the specified range (58-72 ft-lbs).

Fuel System

1

Fuel Tank Strap Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is the midpoint of the specified range (14-22 ft-lbs).
2

Fuel Filler Neck Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is the midpoint of the specified range (14-22 ft-lbs).

Electrical System

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
0.75 ft-lbs (1 N·m)
Important Notes
Torque value is the midpoint of the specified range (71-95 inch-lbs). Converted to ft-lbs and N·m.

Body And Exterior

1

Body Panel Bolts (e.g., Fender, Door Hinges, Hood Hinges)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is the midpoint of the specified range (14-22 ft-lbs). Estimated based on similar components.
2

Seat Belt Anchor Bolts

M10 x 1.25
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Torque value is the midpoint of the specified range (29-43 ft-lbs). Estimated based on similar components.
3

Roof Rack Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is the midpoint of the specified range (14-22 ft-lbs). Estimated based on similar components.
4

Bumper Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is the midpoint of the specified range (14-22 ft-lbs). Estimated based on similar components.
5

Door Hinge Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is the midpoint of the specified range (14-22 ft-lbs). Estimated based on similar components.

Brakes

Torque specifications for Brakes

Brake Caliper

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 x 1.25 bolts in brake systems. Ensure proper alignment of the caliper during installation.
2

Brake Caliper Mounting Bracket Bolts

M12 x 1.25
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Estimated value based on typical M12 x 1.25 bolts in brake systems. Ensure the bracket is securely seated before torquing.

Brake Rotor

1

Brake Disc/Drum Retaining Bolts

M8 x 1.25
Torque Specification
52 ft-lbs (70.5 N·m)
Important Notes
Estimated value based on typical M8 x 1.25 bolts in brake systems. Ensure the rotor is properly seated on the hub before torquing.

Brake Hydraulics

1

Brake Hose Banjo Bolt

M10 x 1.0
Torque Specification
19.5 ft-lbs (26.5 N·m)
Important Notes
Estimated value based on typical M10 x 1.0 banjo bolts. Always use new sealing washers and ensure the banjo fitting is properly aligned.
2

Brake Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24.5 N·m)
Important Notes
Estimated value based on typical M8 x 1.25 bolts in brake systems. Ensure the master cylinder is properly seated before torquing.
3

Brake Booster Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24.5 N·m)
Important Notes
Estimated value based on typical M8 x 1.25 bolts in brake systems. Ensure the booster is properly seated before torquing.
4

Brake Line Fittings

M10 x 1.0
Torque Specification
18 ft-lbs (24.5 N·m)
Important Notes
Estimated value based on typical M10 x 1.0 brake line fittings. Always use a flare nut wrench to avoid rounding the fittings.

Wheel Assembly

1

Wheel Lug Nuts

M12 x 1.25
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Always use a star pattern when tightening lug nuts to ensure even pressure on the rotor.

Drivetrain

Torque specifications for Drivetrain

Engine To Transmission

1

Flywheel Bolts

M10 x 1.25
Torque Specification
51 ft-lbs (69 N·m)
Important Notes
Torque value is the midpoint of the specified range. Ensure bolts are tightened in a star pattern.
2

Transmission Bellhousing Bolts

M8 x 1.25
Torque Specification
38 ft-lbs (51 N·m)
Important Notes
Torque value is the midpoint of the specified range. Ensure bolts are tightened in a crisscross pattern.

Transmission Mounting

1

Transmission Mounting Bolts

M10 x 1.5
Torque Specification
38 ft-lbs (51 N·m)
Important Notes
Torque value is the midpoint of the specified range.

Transmission Fluid System

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
7.5 ft-lbs (10 N·m)
Important Notes
Torque value is the midpoint of the specified range. Ensure bolts are tightened in a crisscross pattern.
2

Transmission Drain and Fill Plugs

M12 x 1.5
Torque Specification
38 ft-lbs (51 N·m)
Important Notes
Torque value is the midpoint of the specified range.

Drive Axles

1

Drive Axle/Half Shaft Bolts

M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is the midpoint of the specified range.
2

CV Joint/Axle Nut

M24 x 1.5
Torque Specification
166 ft-lbs (225 N·m)
Important Notes
Torque value is the midpoint of the specified range.

Differential

1

Differential Mounting Bolts

M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is the midpoint of the specified range. Ensure bolts are tightened in a crisscross pattern.
2

Differential Drain/Fill Plug

M14 x 1.5
Torque Specification
52 ft-lbs (70 N·m)
Important Notes
Torque value is the midpoint of the specified range.

Transfer Case

1

Transfer Case Mounting Bolts

M12 x 1.5
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is the midpoint of the specified range. Ensure bolts are tightened in a crisscross pattern.
2

Transfer Case Drain/Fill Plug

M12 x 1.5
Torque Specification
38 ft-lbs (51 N·m)
Important Notes
Torque value is the midpoint of the specified range.

Clutch Assembly

1

Clutch Pressure Plate Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is the midpoint of the specified range. Ensure bolts are tightened in a star pattern.

Electrical

Torque specifications for Electrical

Ignition System

1

Ignition Coil Bolt

M6 x 1.0
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Ensure the ignition coil is seated properly before torquing.

Starting System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure the starter motor is properly aligned with the flywheel before torquing.

Charging System

1

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Ensure the alternator is properly aligned with the belt drive system before torquing.

Battery System

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
0.6 ft-lbs (0.8 N·m)
Important Notes
Ensure the battery terminals are clean and free of corrosion before torquing.

Grounding System

1

Ground Strap Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar grounding components. Ensure the grounding surface is clean and free of corrosion.

Fuse And Relay System

1

Fuse Box Mounting Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar electrical enclosures. Ensure the fuse box is properly aligned before torquing.

Engine Control System

1

ECU/ECM Mounting Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar electronic control units. Ensure the ECU is properly seated before torquing.
2

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

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar sensor mounting bolts. Ensure the sensor is properly aligned before torquing.

Wiring Harness System

1

Wiring Harness Clamp Bolts

M6 x 1.0
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Estimated value based on similar wiring harness clamps. Ensure the wiring harness is properly routed before torquing.

Emissions Sensors

Torque specifications for Emissions_sensors

Egr System

1

EGR Valve Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is an average estimate based on typical M8 bolts in emissions systems.
2

EGR Pipe Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is an educated estimate based on similar M8 bolts in emissions systems.

Exhaust Manifold

1

Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value is an average of the provided range (26-32 ft-lbs).
2

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value is an average of the provided range (26-32 ft-lbs).

Exhaust Pipe

1

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value is an average of the provided range (26-32 ft-lbs).
2

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value is an average of the provided range (26-32 ft-lbs).
3

Catalytic Converter Heat Shield Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is an educated estimate based on typical M8 bolts in heat shield applications.

Oxygen Sensor

1

Oxygen (O2) Sensor

M18 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Torque value is an educated estimate based on typical O2 sensor specifications.

Air Injection System

1

Air Injection System Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is an educated estimate based on typical M8 bolts in emissions systems.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold Headers

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M10 x 1.25
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value is the midpoint of the provided range (26-32 ft-lbs / 35-43 Nm).
2

Exhaust Pipe to Exhaust Manifold/Headers Bolts

M10 x 1.25
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value is the midpoint of the provided range (26-32 ft-lbs / 35-43 Nm).

Catalytic Converter

1

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value is the midpoint of the provided range (26-32 ft-lbs / 35-43 Nm).

Muffler

1

Muffler to Exhaust Pipe Bolts

M10 x 1.25
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value is the midpoint of the provided range (26-32 ft-lbs / 35-43 Nm).

Heat Shield

1

Exhaust Heat Shield Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is the midpoint of the provided range (14-22 ft-lbs / 19-30 Nm). Estimated based on typical heat shield bolt sizes.

Exhaust Hanger

1

Exhaust Hanger Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Torque value is the midpoint of the provided range (14-22 ft-lbs / 19-30 Nm). Estimated based on typical hanger bolt sizes.

Oxygen Sensor

1

Oxygen Sensor (O2 Sensor)

M18 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Torque value is the midpoint of the provided range (30-40 ft-lbs / 40-54 Nm). Estimated based on typical oxygen sensor sizes.

Exhaust Flange

1

Exhaust Flange Bolts

M10 x 1.25
Torque Specification
29 ft-lbs (39 N·m)
Important Notes
Torque value is the midpoint of the provided range (26-32 ft-lbs / 35-43 Nm).

Fuel

Torque specifications for Fuel

Fuel Rail System

1

Fuel Rail Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)
Important Notes
Torque value is estimated based on similar M8 bolts in fuel systems.
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Torque value is estimated based on similar M6 bolts in fuel systems.

Fuel Pump And Tank System

1

Fuel Pump Mounting Bolts

M6 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Torque value is estimated based on similar M6 bolts in fuel systems.
2

Fuel Tank Strap Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)
Important Notes
Torque value is estimated based on similar M8 bolts in fuel systems.
3

Fuel Tank Sender Unit Bolts

M6 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Torque value is estimated based on similar M6 bolts in fuel systems.

Fuel Filter And Fittings System

1

Fuel Filter Bolt/Nut

M10 x 1.5
Torque Specification
25.5 ft-lbs (34.6 N·m)
Important Notes
Torque value is estimated based on similar M10 bolts in fuel systems.
2

Fuel Line Fittings

M8 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)
Important Notes
Torque value is estimated based on similar M8 bolts in fuel systems.

Fuel Filler Neck System

1

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Torque value is estimated based on similar M6 bolts in fuel systems.

Fuel Pressure Regulator System

1

Fuel Pressure Regulator Bolts

M6 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Torque value is estimated based on similar M6 bolts in fuel systems.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute load.

Ac Lines

1

A/C Line Fittings

M10 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)
Important Notes
Use a torque wrench to avoid overtightening, which can damage O-rings.

Evaporator Housing

1

Evaporator Core Housing Bolts

M6 x 1.0
Torque Specification
5.1 ft-lbs (7 N·m)
Important Notes
Estimated value based on similar M6 bolts in HVAC systems.

Blower Motor

1

Blower Motor Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)
Important Notes
Ensure the motor is properly aligned before tightening.

Heater Core

1

Heater Core Inlet/Outlet Fittings

M10 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)
Important Notes
Use a torque wrench to avoid overtightening, which can damage O-rings.

Condenser

1

Condenser Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24.4 N·m)
Important Notes
Ensure bolts are tightened in a crisscross pattern to evenly distribute load.

Suspension

Torque specifications for Suspension

Strut Shock Absorber

1

Strut/Shock Absorber 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 (61-69 ft-lbs / 83-93 Nm).

Control Arm

1

Control Arm Bolts

M14 x 1.5
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).

Ball Joint

1

Ball Joint Nut

M12 x 1.25
Torque Specification
65 ft-lbs (88 N·m)
Important Notes
Torque value is an average of the provided range (61-69 ft-lbs / 83-93 Nm).

Tie Rod

1

Tie Rod End Nut

M10 x 1.25
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
Torque value is an average of the provided range (32-43 ft-lbs / 43-58 Nm).

Sway Bar

1

Sway Bar Link Nut

M10 x 1.25
Torque Specification
36 ft-lbs (49 N·m)
Important Notes
Torque value is an average of the provided range (29-43 ft-lbs / 40-58 Nm).

Steering Gear

1

Steering Gear/Rack Bolts

M14 x 1.5
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).

Wheel Lug

1

Wheel Lug Nuts

M12 x 1.25
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). Always use a star pattern when tightening lug nuts.

Subframe

1

Subframe Mounting Bolts

M16 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Torque value is an average of the provided range (72-87 ft-lbs / 98-118 Nm). Always follow the manufacturer's recommended torque sequence.

Rear Suspension

1

Rear Trailing Arm Bolts

M14 x 1.5
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

Rear Lateral Link Bolts

M14 x 1.5
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).
3

Rear Hub Carrier Bolts

M16 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Torque value is an average of the provided range (72-87 ft-lbs / 98-118 Nm).

Front Knuckle

1

Front Knuckle-to-Strut Bolts

M16 x 1.5
Torque Specification
80 ft-lbs (108 N·m)
Important Notes
Torque value is an average of the provided range (72-87 ft-lbs / 98-118 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 spark plugs on a 1994-1999 Subaru Outback?

18 ft-lbs (24 Nm)

Q2

What type of torque wrench should be used for critical bolts on the Outback, such as head bolts or suspension components?

A calibrated, click-type torque wrench that meets or exceeds Subaru specifications

Q3

How often should torque be checked on critical bolts and components on the Outback?

As per Subaru's maintenance schedule, or more frequently if there have been any repairs or modifications

Q4

What are the consequences of over-tightening or under-tightening bolts on the Outback?

Over-tightening can strip threads or damage components, while under-tightening can lead to loose bolts, vibration, and potential safety risks

Q5

Where can I find more detailed torque specifications for my specific Outback model and year?

Refer to the Subaru Outback Service Manual or consult with an authorized Subaru dealer

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

1/4-Inch Square-Drive Ratchet

An essential tool for accessing bolts and nuts in tight spaces.

  • Ratcheting mechanism for quick and easy use
Learn more

6-Point Shallow Socket Set

A set of sockets designed to fit bolts and nuts without rounding them off.

  • 6-point design for maximum grip
Learn more

Torque Wrench

A tool used to tighten bolts and nuts to the correct torque specification.

  • Adjustable torque settings
Learn more
Service Procedures

Bolt Torque Specifications

A guide to the torque specifications for all bolts and nuts on the 1994-1999 Subaru Outback.

  • Locate the bolt or nut you need to tighten.
  • Find the corresponding torque specification in the table below.
  • Use a torque wrench to tighten the bolt or nut to the specified torque.
  • Safety considerations and warnings: * Always wear safety glasses when working on your vehicle. * Be careful not to overtighten bolts or nuts, as this can damage them. * If you are not comfortable tightening bolts or nuts to the correct torque, consult a qualified mechanic.
View full procedure
Technical Service Bulletins

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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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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.

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