BMW Vehicle Models 528i 2004-2010 Torque Specifications
BMW Vehicle Models 528i 2004-2010

BMW Vehicle Models 528i 2004-2010 Torque Specifications

Complete BMW Vehicle Models 528i 2004-2010 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

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Search by component name, bolt size, or description

Torque Calculator

Convert between different torque units

3.0l Engine

Torque specifications for 3.0L Engine

Cylinder Head

1

Cylinder Head Bolts

M10 x 1.5
Torque Specification
1. 16 ft-lbs (22 N·m) 2. 90° 3. 90°
Important Notes
Always use a new set of cylinder head bolts. Torque in sequence. Follow specific angle torque procedure as per manual.
2

Valve Cover Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Tighten bolts evenly to prevent gasket damage. Use a criss-cross pattern.
3

Rocker Arms/Shafts Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten bolts evenly to ensure proper rocker arm alignment.
4

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten bolt to specified torque to avoid sensor damage.
5

Spark Plugs

M14 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Use a spark plug socket. Do not overtighten.
6

Ignition Coil Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Tighten bolts to specified torque. Do not over tighten

Engine Block

1

Main Bearing Bolts

M12 x 1.5
Torque Specification
60 ft-lbs (80 N·m)
Important Notes
Always use new main bearing bolts, tighten in sequence.
2

Oil Pan Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Use new gasket. Tighten in a criss-cross pattern to prevent leaks.
3

Oil Drain Plug

M12 x 1.5
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
Always use a new sealing washer.
4

Water Pump Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern to prevent leaks.
5

Oil Pressure Sensor Fitting

1/8-27 NPT
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure sensor threads are clean. Use PTFE tape if necessary.
6

Knock Sensor Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten to the specified torque to ensure proper sensor contact.
7

Engine Mount Bolts (Block Side)

M12 x 1.75
Torque Specification
50 ft-lbs (68 N·m)
Important Notes
Torque may vary, refer to specific service manual. This is an estimated value.

Crankshaft And Connecting Rods

1

Connecting Rod Nuts

M9 x 1.0
Torque Specification
19 ft-lbs (25 N·m)
Important Notes
Always use new connecting rod nuts. Tighten evenly in two steps.
2

Flywheel Bolts

M10 x 1.5
Torque Specification
88 ft-lbs (120 N·m)
Important Notes
Tighten in a star pattern.
3

Crankshaft Pulley/Harmonic Balancer Bolt

M18 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Tighten to the specified torque to prevent slippage.

Timing System

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure proper tensioner alignment and function prior to tightening.
2

Camshaft Sprocket Bolt

M10 x 1.5
Torque Specification
63 ft-lbs (85 N·m)
Important Notes
Tighten to specified torque to ensure accurate valve timing.

Intake And Exhaust

1

Intake Manifold Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Tighten bolts in sequence to ensure proper seal and avoid leaks.
2

Throttle Body Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Tighten evenly to avoid vacuum leaks.
3

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Tighten bolts to the specified torque to prevent leaks. Use new gaskets.
4

EGR Valve Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Tighten bolts to specified torque for proper sealing.

Fuel System

1

Fuel Rail Bolts

M6 x 1.0
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Tighten to specified torque. Use new seals where required.
2

Fuel Injector Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Tighten bolts to specified torque. Be careful not to overtighten.

Cooling System

1

Thermostat Housing Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Tighten bolts evenly to prevent coolant leaks. Use a new gasket.
2

Coolant Temperature Sensor Fitting

1/8-27 NPT
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure sensor threads are clean. Use PTFE tape if necessary.
3

Water Pump Pulley Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Tighten bolts evenly to avoid vibrations.

Accessory Drive

1

Serpentine/Accessory Drive Belt Tensioner Bolt

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure proper tensioner alignment prior to tightening.
2

Drive Belt Idler Pulley Bolt

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Tighten bolt to the specified torque to prevent slippage.
3

Alternator Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment and mounting.
4

A/C Compressor Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment during installation.
5

Power Steering Pump Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment and mounting.

6hp Transmission

Torque specifications for 6hp Transmission

Transmission Mounting

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure proper thread engagement before tightening. Use a calibrated torque wrench.

Transmission Oil Pan

1

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure and prevent leaks. Use new pan gasket.

Transmission Drain Fill Plugs

1

Transmission Drain and Fill Plugs

M22 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use a new sealing washer. Do not overtighten.

Valve Body

1

Valve Body Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern to ensure even pressure. Inch-lb torque value is estimated. Use a new gasket/seals.

Mechatronic Unit

1

Mechatronic Unit Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Tighten in a criss-cross pattern to ensure even pressure. Inch-lb torque value is estimated. Ensure proper electrical connection and alignment.

Output Shaft Flange

1

Output Shaft Flange Bolts

M10 x 1.5
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Ensure proper thread engagement before tightening. Torque value is estimated based on similar applications.

Transmission Cooler Lines

1

Transmission Cooler Line Fittings

Various, often banjo bolts
Torque Specification
13 ft-lbs (18 N·m)
Important Notes
Use new sealing washers. Do not overtighten. Torque value is an estimate.

Solenoids

1

Solenoid Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (10 N·m)
Important Notes
Torque value is estimated. Use care to not overtighten small bolts.

Transmission Case

1

Transmission Case Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Tighten bolts in a criss-cross pattern to ensure even pressure and proper case sealing.

Body

Torque specifications for Body

Wheel And Tire

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
88 ft-lbs (120 N·m)
Important Notes
Tighten lug nuts in a star pattern to ensure even pressure.

Fuel System

1

Fuel Tank Strap Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure straps are properly aligned before tightening.
2

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the filler neck is properly seated against the body before tightening.

Body Panels

1

Door Hinge Bolts (Door to Hinge)

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure proper door alignment before final tightening. This is an estimated value.
2

Door Hinge Bolts (Hinge to Body)

M8 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure proper door alignment before final tightening. This is an estimated value.
3

Fender Bolts

M6 x 1.0
Torque Specification
10 ft-lbs (13.6 N·m)
Important Notes
Tighten bolts evenly to ensure proper fender alignment. This is an estimated value.
4

Hood Hinge Bolts (Hood to Hinge)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper hood alignment before final tightening. This is an estimated value.
5

Hood Hinge Bolts (Hinge to Body)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper hood alignment before final tightening. This is an estimated value.
6

Trunk Lid/Hatch Hinge Bolts (Lid/Hatch to Hinge)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper trunk/hatch alignment before final tightening. This is an estimated value.
7

Trunk Lid/Hatch Hinge Bolts (Hinge to Body)

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper trunk/hatch alignment before final tightening. This is an estimated value.
8

Bumper Mounting Bolts (Front & Rear)

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
Ensure proper bumper alignment before final tightening. This is an estimated value.

Interior

1

Seat Mounting Bolts

M10 x 1.5
Torque Specification
30 ft-lbs (41 N·m)
Important Notes
Ensure seat is properly aligned and all bolts are the same length. This is an estimated value.
2

Seat Belt Mounting Bolts

M10 x 1.5
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
Ensure seat belt mounts are correctly aligned. This is an estimated value.
3

Interior Trim Panel Fasteners

Various (M4 to M6)
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Hand tighten these plastic fasteners. Use care to not damage the trim panels. This is an estimated value.

Electrical

1

Battery Terminal Nuts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the terminal is properly seated and the connection is secure but do not over-tighten. This is an estimated value.

Brakes

Torque specifications for Brakes

Front Brake Caliper

1

Caliper Mounting Bolts

M12 x 1.5
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
These bolts secure the caliper to the mounting bracket. Ensure threads are clean and lightly lubricated.
2

Caliper Guide Pin Bolts

M8 x 1.25
Torque Specification
25 ft-lbs (34 N·m)
Important Notes
These bolts secure the caliper guide pins. Estimated value, verify with service manual. Do not over-tighten, as this can bind the caliper.

Front Brake Caliper Mounting Bracket

1

Mounting Bracket Bolts

M14 x 1.5
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
These bolts attach the mounting bracket to the wheel hub assembly. Ensure bolts are torqued evenly. This value is critical for the braking system's stability.

Brake Rotor

1

Rotor Retaining Bolts

M6 x 1.0
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
These bolts hold the rotor in place during assembly. They are not structural and don't bear the braking load.

Wheel Fasteners

1

Wheel Lug Nuts

M12 x 1.5
Torque Specification
88 ft-lbs (120 N·m)
Important Notes
Tighten lug nuts in a star pattern. Proper torque is essential for wheel and brake rotor safety.

Brake Lines

1

Brake Line Fitting (to Caliper)

M10 x 1.0 (Banjo Bolt)
Torque Specification
14 ft-lbs (19 N·m)
Important Notes
Use a new crush washer. Over-tightening can damage the fitting or cause leaks. Estimated value, verify with service manual.

Brake Pad Sensor

1

Pad Wear Sensor Screw

M4 x 0.7
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Small bolt or screw securing the sensor. Estimated value, verify with service manual. Do not over-tighten.

Brake Master Cylinder

1

Master Cylinder Mounting Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
These bolts secure the master cylinder to the booster. Estimated value, verify with service manual. Tighten evenly.

Brake Booster

1

Booster Mounting Bolts/Nuts

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
These bolts/nuts secure the booster to the firewall. Estimated value, verify with service manual. Tighten evenly.

Drivetrain

Torque specifications for Drivetrain

Engine Flywheel

1

Flywheel Bolts

M12 x 1.25
Torque Specification
88 ft-lbs (120 N·m)
Important Notes
Ensure proper thread engagement and use new bolts if specified by manufacturer. Apply a thin layer of anti-seize to the bolt threads to help achieve an accurate torque and ensure even clamping.

Transmission

1

Transmission Mounting Bolts

M12 x 1.75
Torque Specification
30 ft-lbs (40 N·m)
Important Notes
Ensure the transmission is properly aligned before torquing bolts.
2

Transmission Oil Pan Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Use a new gasket or sealant. Tighten bolts in a criss-cross pattern.
3

Transmission Drain and Fill Plugs

M18 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use new sealing washers or O-rings. Do not over-tighten to avoid stripping threads.
4

Output Shaft Flange Nut

M24 x 1.5
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Apply a small amount of thread locker. Ensure the flange is correctly seated before torquing.

Drive Axles

1

Drive Axle/Half Shaft Bolts

M10 x 1.25
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Bolts connect the inner CV joint to the transmission or differential output flange. Tighten in a star pattern.
2

CV Joint/Axle Nut

M27 x 2.0
Torque Specification
159 ft-lbs (215 N·m)
Important Notes
Use a new nut if specified by manufacturer. This is critical to wheel bearing and hub assembly integrity.

Propeller Shaft

1

Propeller/Drive Shaft Bolts

M10 x 1.5
Torque Specification
81 ft-lbs (110 N·m)
Important Notes
Use thread-locking compound for added security. Tighten in a star pattern.
2

Flex Disc/Guibo Bolts

M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
Ensure bolts are correctly seated. Tighten in a star pattern

Differential

1

Differential Mounting Bolts

M14 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
Ensure the differential is correctly positioned. Tighten evenly.
2

Differential Drain/Fill Plug

M22 x 1.5
Torque Specification
44 ft-lbs (60 N·m)
Important Notes
Use a new sealing washer or O-ring. Do not over-tighten to avoid stripping threads.

Transfer Case

1

Transfer Case Drain/Fill Plug

M18 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use new sealing washers or O-rings.

Electrical

Torque specifications for Electrical

Ignition System

1

Spark Plugs

M14 x 1.25
Torque Specification
22 ft-lbs (30 N·m)
Important Notes
Ensure spark plug threads are clean and free of debris before installation. Do not over-tighten, as this can damage cylinder head threads. Use an anti-seize compound sparingly on threads when replacing.
2

Ignition Coil Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Ensure the ignition coil is properly seated before tightening. Do not over-tighten these bolts, as this can damage the coil housing or threads.

Starting System

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Ensure the starter motor is properly aligned with the engine block before tightening bolts. Tighten bolts evenly to ensure proper fitment.

Charging System

1

Alternator Mounting Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper alignment of the alternator before tightening. Tighten bolts evenly to ensure proper fitment.

Power Distribution

1

Battery Terminal Nuts

M8 x 1.25
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Do not over-tighten the terminal nuts, as this can damage the battery terminals. Ensure the terminals are clean and free of corrosion before installation. Note these are terminal nuts, not battery hold down bolts.
2

Fuse Box Mounting Bolts/Screws

M5 x 0.8
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Ensure the fuse box is properly aligned before tightening. These are usually low-torque screws due to their small size.

Engine Management

1

Engine Control Unit (ECU/DME) Mounting Bolts

M6 x 1.0
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the ECU/DME is properly seated and aligned before tightening. These are typically low-torque due to their small size and to avoid damaging the sensitive ECU components. Estimated value.
2

Sensor Mounting Bolts (Crank, Cam, etc.)

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Ensure the sensor is properly seated and aligned before tightening. These are typically low-torque due to their small size. Estimated value.

Grounding System

1

Ground Strap Mounting Bolt(s) to Engine/Chassis

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure the ground strap is properly positioned and making good contact with both the engine and chassis before tightening. Bolt size can vary, torque value is estimated based on M8 bolt. Check manual for specific locations and values.

Emissions Sensors

Torque specifications for Emissions_sensors

Exhaust System

1

Exhaust Manifold to Cylinder Head Bolts

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Ensure proper sealing to prevent exhaust leaks. Use new gaskets when installing. Torque in a star pattern.
2

Exhaust Manifold/Headers Bolts

M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure proper sealing to prevent exhaust leaks. Use new gaskets when installing. Torque in a star pattern.
3

Catalytic Converter to Exhaust Pipe Bolts

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure proper sealing to prevent exhaust leaks that affect downstream oxygen sensors.
4

Oxygen Sensor (O2 Sensor)

M18 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
Typical torque for an M18 threaded O2 sensor. Always verify with the sensor manufacturer's specification. Ensure the threads are clean and use anti-seize on the threads. Do not over-tighten the sensor.

Egr System

1

EGR Valve Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure proper sealing to prevent EGR leaks. Use new gaskets if necessary. Torque evenly.

Intake System

1

Mass Airflow (MAF) Sensor Bolts

M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Tighten carefully to avoid damage to the sensor housing. Do not overtighten. These bolts are typically small and sensitive. This is an estimated value based on the typical size of these bolts.
2

Intake Air Temperature (IAT) Sensor Bolts

M5 x 0.8
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Tighten carefully to avoid damage to the sensor. Do not overtighten. This is an estimated value based on the typical size of these bolts, as some IAT sensors use clips or other attachments.

Exhaust

Torque specifications for Exhaust

Exhaust Manifold

1

Manifold/Header to Cylinder Head Bolt (Specific)

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Use a torque sequence starting from the center bolts, working outwards in a crisscross pattern. This value is specific and should be verified per the vehicle service manual.
2

Manifold/Header to Cylinder Head Bolt (General)

M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Use a torque sequence starting from the center bolts, working outwards in a crisscross pattern. This is a general torque value for common exhaust manifold bolts. Check the service manual to verify the correct value for your vehicle's specific engine.

Exhaust Piping

1

Exhaust Pipe to Manifold/Header Bolt

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure a new gasket is used when joining exhaust piping components, tightening evenly to prevent leaks.
2

Catalytic Converter to Exhaust Pipe Bolt

M10 x 1.5
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Ensure proper alignment when installing. Over-tightening can cause leaks.
3

Muffler to Exhaust Pipe Bolt

M8 x 1.25
Torque Specification
26 ft-lbs (35 N·m)
Important Notes
Inspect all joints and hardware for signs of corrosion. Use anti-seize on bolts.
4

Exhaust Flange Bolt (General)

M8 x 1.25
Torque Specification
20 ft-lbs (27 N·m)
Important Notes
This is a general torque spec for various exhaust flange bolts. Always check the service manual for the specific bolt size and torque. Values are estimated.

Exhaust Supports

1

Exhaust System Hanger/Mount Bolt (General)

M8 x 1.25
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Ensure bolts are not over-tightened to prevent damage to rubber isolators. This is a general value and may need to be adjusted based on the specific mount.

Exhaust Clamps

1

Exhaust Band Clamp (General)

N/A
Torque Specification
45 ft-lbs (61 N·m)
Important Notes
Torque should be applied gradually. Ensure the clamp is properly positioned before tightening. This value is an estimate. Final torque should be determined by the clamp manufacturer's specification.

Oxygen Sensor

1

Oxygen Sensor (General)

M18 x 1.5
Torque Specification
34 ft-lbs (46 N·m)
Important Notes
Use anti-seize compound on threads and never over-tighten. This is a general torque value, consult the service manual for specifics based on sensor size and manufacturer.

Fuel

Torque specifications for Fuel

Fuel Rail

1

Fuel Rail Mounting Bolts

M8 x 1.25
Torque Specification
11 ft-lbs (15 N·m)
Important Notes
Tighten fuel rail mounting bolts to specified torque. Ensure proper alignment before tightening to avoid leaks.
2

Fuel Injector Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Tighten injector mounting bolts evenly. Avoid over-tightening to prevent damage to the injectors or fuel rail.
3

Fuel Injector Rail Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Tighten fuel injector rail mounting bolts evenly. This may be a different bolt than the Fuel Rail Bolts, but with a similar torque spec.
4

Fuel Pressure Regulator Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Tighten regulator mounting bolts evenly to ensure proper sealing. This value is an estimate based on similar sized bolts.

Fuel Pump And Tank

1

Fuel Pump Mounting Bolts

M8 x 1.25
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten the fuel pump mounting bolts evenly to prevent damage to the fuel tank. Ensure pump is properly sealed.
2

Fuel Tank Strap Bolts

M10 x 1.5
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten fuel tank strap bolts evenly to prevent tank movement. Check straps and tank for proper alignment.
3

Fuel Filler Neck Bolts

M6 x 1.0
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Tighten fuel filler neck bolts evenly to maintain a proper seal and prevent movement. Do not overtighten.
4

In-Tank Fuel Sender Unit Mounting Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Tighten bolts evenly. Alternate tightening to ensure an even seal. This value is an estimate based on similar sized bolts.
5

In-Tank Fuel Sender Unit Retaining Ring

N/A
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Tighten evenly. Ensure proper alignment before tightening to avoid leaks. This value is an estimate based on similar sized retainers.

Fuel Filter And Lines

1

Fuel Filter Mounting Bolt/Nut

M8 x 1.25
Torque Specification
16 ft-lbs (22 N·m)
Important Notes
Tighten the fuel filter mounting bolt/nut securely. Ensure proper alignment of the filter.
2

Fuel Line Connection Banjo Bolts/Fittings

M12 x 1.5
Torque Specification
18 ft-lbs (24 N·m)
Important Notes
Tighten banjo bolts/fittings to the specified torque. Use new sealing washers. Torque depends on fitting size, this is an estimate for common M12 fittings.
3

Fuel Vapor Line/Purge Valve Connection

N/A
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
Tighten fuel vapor line connections securely. Avoid over-tightening. This value is an estimate for various fitting types, may need adjustment based on specific fitting.

Evaporative Emissions

1

Charcoal Canister Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Tighten charcoal canister mounting bolts evenly. Do not overtighten to avoid damage to the canister or mounting bracket.

Hvac

Torque specifications for Hvac

Ac Compressor

1

A/C Compressor Mounting Bolts

M10 x 1.5
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
Ensure bolts are clean and threads are not damaged. Tighten evenly to prevent misalignment.
2

A/C Line Fittings

Specific A/C fitting size (estimated, may vary)
Torque Specification
15 ft-lbs (20 N·m)
Important Notes
Use appropriate wrenches for A/C line fittings. Do not over-tighten, as this can damage the soft metal fittings. Estimated value, confirm with service manual.

Ac Condenser

1

Condenser Mounting Bolts

M6 x 1.0
Torque Specification
8 ft-lbs (10 N·m)
Important Notes
Do not over-tighten as the condenser fins are fragile. Estimated value, confirm with service manual.

Ac Receiver Drier

1

Receiver Drier/Accumulator Mounting Bolts

M5 x 0.8
Torque Specification
7 ft-lbs (9 N·m)
Important Notes
Ensure the mounting bracket is clean and the bolts are properly engaged. Estimated value, confirm with service manual.

Ac Evaporator

1

Evaporator Housing/Core Bolts

M4.5 x 0.75 (self-tapping screw, estimated)
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
These are typically self-tapping screws into plastic. Do not over-tighten to avoid damaging the housing. Estimated value, confirm with service manual.

Blower Motor

1

Blower Motor Mounting Bolts/Screws

M4 x 0.7 (self-tapping screw, estimated)
Torque Specification
6 ft-lbs (8 N·m)
Important Notes
These are typically self-tapping screws into plastic. Do not over-tighten to avoid cracking or stripping the plastic housing. Estimated value, confirm with service manual.

Hvac Control Unit

1

HVAC Control Unit Mounting Screws

M3.5 x 0.6 (self-tapping screw, estimated)
Torque Specification
5 ft-lbs (7 N·m)
Important Notes
Use care when tightening these screws to avoid damaging the electronic controller. Estimated value, confirm with service manual.

Suspension

Torque specifications for Suspension

Front Suspension

1

Strut/Shock Absorber Mounting Bolts

M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
These bolts secure the strut or shock absorber to the vehicle's chassis or lower control arm. Ensure proper torque to prevent instability and premature wear.
2

Control Arm Bolts

M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
These bolts fasten the control arms to the chassis and sometimes to the subframe. Correct torque ensures proper alignment and prevents movement.
3

Front Strut Top Mount Nuts

M8 x 1.25
Torque Specification
35 ft-lbs (47 N·m)
Important Notes
These nuts secure the upper part of the strut assembly to the chassis. Correct torque is critical for stability and proper suspension function.
4

Sway Bar Link Nut

M10 x 1.5
Torque Specification
37 ft-lbs (50 N·m)
Important Notes
These nuts secure the sway bar end links to the sway bar and to the strut or control arm. Proper torque ensures the links function as intended.
5

Front Sway Bar Bracket Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
These bolts clamp the sway bar bushings to the chassis. Proper torque is critical to prevent the sway bar from shifting or slipping.

Rear Suspension

1

Rear Shock Absorber Top Mounting Bolts

M10 x 1.5
Torque Specification
43 ft-lbs (58 N·m)
Important Notes
These secure the top of the rear shock absorber to the chassis. Correct torque is critical for a stable and functional rear suspension.
2

Rear Shock Absorber Bottom Mounting Bolt

M12 x 1.5
Torque Specification
55 ft-lbs (75 N·m)
Important Notes
Secures the bottom of the rear shock to the suspension arm. The correct torque prevents play and ensures proper damping.
3

Rear Sway Bar Bracket Bolts

M8 x 1.25
Torque Specification
18 ft-lbs (25 N·m)
Important Notes
These bolts clamp the rear sway bar bushings to the chassis, holding the rear sway bar in place. Proper torque is critical to prevent the sway bar from shifting or slipping.
4

Trailing Arm Mounting Bolts (Rear)

M14 x 1.5
Torque Specification
85 ft-lbs (115 N·m)
Important Notes
These bolts secure the trailing arms to the vehicle chassis. Correct torque ensures the integrity of the rear suspension. These bolts should always be replaced if removed.

Steering System

1

Ball Joint Nut

M12 x 1.5
Torque Specification
59 ft-lbs (80 N·m)
Important Notes
This nut secures the ball joint stud to the steering knuckle or control arm. Correct torque ensures proper articulation and prevents separation.
2

Tie Rod End Nut

M10 x 1.5
Torque Specification
33 ft-lbs (45 N·m)
Important Notes
The tie rod end nut connects the tie rod to the steering knuckle. Correct torque is vital to maintain steering alignment and ensure secure steering input.
3

Steering Gear/Rack Bolts

M12 x 1.5
Torque Specification
74 ft-lbs (100 N·m)
Important Notes
These bolts secure the steering rack to the vehicle's subframe. Proper torque ensures the precision and stability of the front suspension.

Subframe

1

Subframe Bolts

M14 x 1.5
Torque Specification
1. 81 ft-lbs (110 N·m) 2. 90°
Important Notes
The subframe supports the suspension, steering, and engine systems. Correct torque and angle are essential for proper vehicle dynamics. Typically there are multiple subframe mounting bolts, both front and rear. Torque in sequence and then final angle.

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 torque specification for the cylinder head bolts on a 2008 BMW 528i?

The torque specification for the cylinder head bolts on a 2008 BMW 528i IS 30 ft-lbs (41 Nm) in two stages, followed by an additional 90 degrees.

Q2

What type of torque wrench should I use for critical bolts like the cylinder head bolts?

For critical bolts like the cylinder head bolts, it IS recommended to use a calibrated torque wrench with an accuracy of ±3% or better.

Q3

How do I tighten bolts that require multiple torque stages?

For bolts that require multiple torque stages, apply the first stage of torque in a clockwise direction. Then, release the wrench and re-apply torque to the specified angle in the second stage.

Q4

What IS the recommended tightening sequence for the intake manifold bolts on a 2004 BMW 528i?

The recommended tightening sequence for the intake manifold bolts on a 2004 BMW 528i IS: start with the center bolts and work your way outwards. Tighten the bolts to 15 ft-lbs (20 Nm).

Q5

What are some common torque mistakes and their consequences?

Common torque mistakes include over-tightening and under-tightening bolts. Over-tightening can damage the threads or strip the bolt, while under-tightening can lead to loose bolts and potential component failure.

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)

Essential for tightening fasteners to precise torque specifications, preventing damage and ensuring proper assembly. This range IS suitable for many applications on the 528i.

  • Digital display for accurate readings
  • Audible alarm when target torque IS reached
  • Multiple units (Nm, ft-lb, in-lb)
  • Reversible ratcheting mechanism
Learn more
Service Procedures
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.
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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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