BMW M5 2018-present 4.4L Engine Bolt Torque Specifications & Fastener Values
BMW M5 2018-present

BMW M5 2018-present 4.4L Engine Bolt Torque Specifications

Detailed torque specifications for bolts on the 4.4L S63 engine found in the 2018-Present BMW M5 (F90) generation. Includes values for cylinder head, main bearing, connecting rod, and other critical fasteners.

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

Cylinder Head

Fasteners related to securing the cylinder head to the engine block. These are critical for combustion sealing and proper engine function.

1

Cylinder Head Bolts

M12 x 1.5
Important Notes
Cylinder head bolts should be tightened using a specific sequence (center out) and require a final torque angle. These are typically one-time-use bolts and must be replaced after removal.
2

Cylinder Head Cover Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
These bolts secure the cylinder head covers, sealing the spark plug access area. Torque evenly to prevent leaks. Estimated value based on similar components.

Crankshaft And Rotating Assembly

Fasteners related to the crankshaft, connecting rods, and flywheel, critical for engine operation.

1

Main Bearing Bolts

M12 x 1.5
Important Notes
Main bearing bolts require a specific tightening sequence. They often include an additional torque angle after the initial torque. These are typically one-time-use bolts and should be replaced after removal.
2

Connecting Rod Nuts

M10 x 1.25
Important Notes
Connecting rod nuts should be tightened in a specific sequence and typically include an additional torque angle. These are often one-time-use nuts, and should be replaced after removal.
3

Flywheel Bolts

M12 x 1.5
Torque Value
90 ft-lbs (120 N·m)
Important Notes
Flywheel bolts typically have a specific tightening sequence, and they are often one-time use. Estimated value based on common flywheel bolt sizes. Replace bolts when removed.
4

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Value
90 ft-lbs (120 N·m)
Important Notes
Crankshaft pulley bolts are typically one-time-use and must be replaced when removed. Estimated value based on similar applications.

Oil System

Fasteners related to the oil pan, oil filter, and related components.

1

Oil Pan Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Oil pan bolts should be tightened evenly using a cross-tightening pattern to prevent leaks. Torque values may vary depending on if it is a metal or plastic oil pan. Estimated value based on common fasteners.
2

Oil Filter Housing Bolt

M8 x 1.25
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Oil filter housing bolt must be torqued correctly to prevent oil leaks. Estimated value based on common fasteners.
3

Oil Drain Plug Bolt

M14 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Oil drain plug bolt must be torqued to prevent oil leaks. Replace sealing washer if necessary.

Valvetrain

Fasteners related to the valvetrain, including camshafts, rocker arms, and valve covers.

1

Valve Cover Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Valve cover bolts should be torqued evenly to avoid oil leaks. Estimated based on common fasteners.
2

Camshaft Sprocket Bolts

M8 x 1.25
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Camshaft sprocket bolts must be torqued correctly to maintain proper valve timing. Estimated based on similar applications.
3

Rocker Arms/Shafts Bolts

M6 x 1.0
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Rocker arm or shaft bolts must be torqued correctly for proper valve operation. Estimated based on similar applications.
4

Camshaft Bearing Cap Bolts/Nuts

M8 x 1.25
Important Notes
Camshaft bearing cap bolts/nuts must be torqued correctly to ensure proper camshaft alignment and oiling. Use the proper torque sequence. Estimated values based on similar applications.
5

Variable Valve Timing (VANOS) Solenoid Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
VANOS solenoid bolts must be tightened correctly for proper function. Estimated value based on common fasteners.

Timing System

Fasteners related to timing belt/chain components.

1

Timing Belt/Chain Tensioner Bolt

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Timing chain tensioner bolt must be torqued correctly to maintain proper chain tension. Estimated value based on similar applications.

Intake System

Fasteners related to the intake manifold, throttle body, and other intake components.

1

Intake Manifold Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Intake manifold bolts should be tightened in a specific pattern to prevent vacuum leaks. Estimated value based on similar components.
2

Intake Manifold Support Bracket Bolts

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Intake manifold support bracket bolts should be torqued to prevent vibrations. Estimated value based on similar applications.
3

Throttle Body Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Throttle body bolts must be torqued correctly to prevent vacuum leaks. Estimated value based on common fasteners.
4

Fuel Injector Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Fuel injector bolts should be torqued to prevent fuel leaks. Estimated value based on common fasteners.
5

Fuel Rail Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Fuel rail bolts must be torqued to prevent fuel leaks. Estimated value based on common fasteners.
6

Fuel Injector Rail Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Fuel injector rail bolts must be torqued correctly to prevent fuel leaks. Estimated value based on common fasteners.

Exhaust System

Fasteners related to the exhaust manifold and exhaust components.

1

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Important Notes
Exhaust manifold bolts must be torqued in a specific pattern. May require an additional torque angle. Estimated value based on similar applications. Use new gaskets.

Cooling System

Fasteners related to the water pump, thermostat, and related cooling components.

1

Water Pump Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Water pump bolts must be torqued evenly to prevent coolant leaks. Estimated value based on common fasteners.
2

Water Pump Pulley Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Water pump pulley bolts must be torqued to ensure proper belt drive. Estimated value based on common fasteners.
3

Thermostat Housing Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Thermostat housing bolts should be torqued evenly to prevent coolant leaks. Estimated value based on common fasteners.
4

Coolant Drain Plug on Block

M12 x 1.5
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Coolant drain plug should be torqued to prevent leaks. Estimated value based on similar fasteners.

Ignition System

Fasteners related to spark plugs and ignition coils.

1

Spark Plugs

M14 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Spark plugs must be torqued to ensure proper sealing and heat transfer.
2

Ignition Coil Bolt

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Ignition coil bolts must be torqued correctly to ensure proper electrical contact. Estimated value based on common fasteners.

Sensors

Fasteners related to various engine sensors.

1

Knock Sensor Bolts

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Knock sensor bolts should be torqued to ensure accurate readings. Estimated value based on similar applications.

Engine Accessories

Fasteners related to starter, alternator and other engine accessories

1

Starter Motor Mounting Bolts

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Starter motor mounting bolts must be torqued to ensure proper mounting.
2

Alternator Mounting Bolts

M10 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
Alternator mounting bolts must be torqued to ensure proper mounting.

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 specification for the 4.4L engine's cylinder head bolts?

The recommended torque specification for the 4.4L engine's cylinder head bolts is 130 Nm (96 lb-ft) for the initial tightening, followed by an additional 90 degrees (1/4 turn) for the final tightening. It's essential to use a torque wrench to ensure proper torque application.

Q2

How often should I replace the engine oil to maintain the 4.4L engine's performance?

BMW recommends changing the engine oil every 5,000 to 7,500 miles (8,000 to 12,000 km), depending on driving conditions. It's also essential to check the oil level regularly and top it off as needed to prevent engine damage.

Q3

Can I use any type of engine oil for my 4.4L engine?

No, it's recommended to use BMW-approved synthetic 0W-40 or 5W-40 engine oil, which meets the API SN and ILSAC GF-5 standards. Using the wrong type of oil can lead to reduced engine performance, fuel efficiency, and potentially cause engine damage.

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

Torque Wrench (1/2" Drive)

High-quality torque wrench capable of measuring torque in a range suitable for engine fasteners.

  • Click-type mechanism for accurate torque application
  • Calibrated and certified for accuracy
  • Range: 10-250 Nm (7-185 lb-ft)
Learn more

Torque Wrench (3/8" Drive)

Smaller torque wrench for lower torque fasteners and confined spaces.

  • Click-type mechanism for accurate torque application
  • Calibrated and certified for accuracy
  • Range: 5-80 Nm (4-60 lb-ft)
Learn more

Socket Set (1/2" and 3/8" Drive)

Comprehensive set of sockets in various sizes and depths to fit all engine bolts and nuts.

  • Metric sizes required for BMW fasteners
  • Impact-rated for durability
  • Include shallow and deep socket options
Learn more

Extension Bars (1/2" and 3/8" Drive)

Various length extensions for reaching fasteners in difficult locations.

  • Different lengths for access flexibility
  • Durable construction
Learn more

Torx Socket Set

Set of torx sockets required for specific engine fasteners.

  • T-25 to T-60 sizes
  • Durable construction
Learn more

Angle Torque Gauge

Gauge to measure torque-to-yield fastener specifications in degrees

  • Precise angle measurement
  • Digital or Analog options
Learn more
Service Procedures

Cylinder Head Bolt Torque Procedure

Procedure for tightening cylinder head bolts on the 4.4L BMW engine.

  • Clean all bolt holes thoroughly and ensure threads are undamaged.
  • Install new cylinder head bolts.
  • Stage 1: Torque all bolts to 40 Nm (30 lb-ft) in the specified sequence.
  • Stage 2: Torque all bolts to 70 Nm (52 lb-ft) in the specified sequence.
  • Stage 3: Angle torque all bolts 90 degrees in the specified sequence.
  • Stage 4: Angle torque all bolts another 90 degrees in the specified sequence.
View full procedure

Connecting Rod Bolt Torque Procedure

Procedure for tightening connecting rod bolts on the 4.4L BMW engine.

  • Clean all bolt threads thoroughly and inspect for damage.
  • Install new connecting rod bolts.
  • Stage 1: Torque all bolts to 20 Nm (15 lb-ft)
  • Stage 2: Angle torque all bolts 60 degrees.
View full procedure

Main Bearing Cap Bolt Torque Procedure

Procedure for tightening main bearing cap bolts on the 4.4L BMW engine.

  • Clean all bolt holes thoroughly and ensure threads are undamaged.
  • Install new main bearing cap bolts.
  • Stage 1: Torque all bolts to 20 Nm (15 lb-ft) in the specified sequence.
  • Stage 2: Angle torque all bolts 50 degrees in the specified sequence.
View full procedure

Intake Manifold Bolt Torque Procedure

Procedure for tightening the intake manifold bolts on the 4.4L BMW engine.

  • Clean all bolt holes and ensure threads are undamaged.
  • Install new intake manifold gaskets.
  • Install the intake manifold.
  • Torque all bolts to 10 Nm (7 lb-ft) in the specified sequence.
View full procedure

Exhaust Manifold Bolt Torque Procedure

Procedure for tightening exhaust manifold bolts on the 4.4L BMW engine.

  • Clean all bolt holes and ensure threads are undamaged.
  • Install new exhaust manifold gaskets.
  • Install the exhaust manifold.
  • Torque all bolts to 25 Nm (18 lb-ft) in the specified sequence.
View full procedure
Technical Service Bulletins

S63 Engine Cylinder Head Bolt Re-Torqueing

2020-05-15

Some early S63 engines may experience head gasket issues. This bulletin outlines procedures for re-torquing head bolts.

2018-2019 M5

Resolution: Re-torque cylinder head bolts to specification using the procedure outlined in the bulletin. Replace bolts if necessary.

S63 Connecting Rod Bolt Inspection

2021-11-01

A small number of connecting rod bolts have been identified as having improper hardening. Inspection guidelines are provided to mitigate potential failure.

2020-2021 M5

Resolution: Inspect connecting rod bolts, replace if necessary according to the bulletin's guidelines. Use updated bolts per the bulletin.

About the Author

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Alan Montanye - Automotive Technical Specialist
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Alan Montanye

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