BMW X5 2019-present 4.4L Engine Bolt Torque Specifications & Fastener Values
BMW X5 2019-present

BMW X5 2019-present 4.4L Engine Bolt Torque Specifications

Comprehensive guide to bolt torque specifications for the 4.4L engine found in the 2019-Present BMW X5, covering various engine components such as cylinder head, main bearings, connecting rods, and more.

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

Specifications for securing the cylinder head to the engine block, critical for combustion sealing and structural integrity.

1

Cylinder Head Bolts (Initial Torque)

M12 x 1.5
Important Notes
Initial torque followed by a 90-degree angle turn. Use new bolts and follow specific tightening sequence. Estimated angle value, consult official manual.
2

Rocker Arm/Shaft Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Ensures proper valve operation. Estimated value, consult official manual.
3

Camshaft Position Sensor Bolt

M6 x 1.0
Torque Value
7 ft-lbs (9 N·m)
Important Notes
Secures the camshaft position sensor to the cylinder head. Avoid over-tightening. Estimated value, consult official manual.

Engine Block

Torque specifications for components directly attached to the engine block, including main bearings and oil pan.

1

Main Bearing Bolts (Initial Torque)

M12 x 1.75
Important Notes
Initial torque followed by a 90-degree angle turn. Use new bolts and follow specific tightening sequence. Estimated angle value, consult official manual.
2

Connecting Rod Nuts (Initial Torque)

M9 x 1.25
Important Notes
Initial torque followed by a 60-degree angle turn. Use new nuts and follow specific tightening sequence. Estimated angle value, consult official manual.
3

Oil Pan Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Ensures a leak-free seal without distorting the oil pan. Estimated value, consult official manual.
4

Knock Sensor Bolt

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensures the sensor is properly secured for accurate readings. Estimated value, consult official manual.
5

Oil Filter Housing Bolt

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Ensures a leak-free seal for oil filtration. Estimated value, consult official manual.
6

Oil Drain Plug Bolt

M14 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Ensures a leak-free seal without damaging the threads. Estimated value, consult official manual.
7

Crankshaft Position Sensor Bolt

M6 x 1.0
Torque Value
7 ft-lbs (9 N·m)
Important Notes
Ensures that the Crankshaft Position Sensor is secure, but not overtightened. Estimated value, consult official manual.

Valvetrain

Specifications for components related to valve timing and control, including camshaft sprockets and timing chain tensioners.

1

Camshaft Sprocket Bolt

M10 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Critical for maintaining proper valve timing. Estimated value, consult official manual.
2

Timing Chain Tensioner Bolt

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensures correct tension on the timing chain. Estimated value, consult official manual.
3

Variable Valve Timing (VVT) Solenoid Bolts

M6 x 1.0
Torque Value
8 ft-lbs (11 N·m)
Important Notes
Ensures proper VVT function, avoid overtightening. Estimated value, consult official manual.

External Components

Fastening specifications for external components including manifolds, covers, and other mounting hardware.

1

Valve Cover Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Avoid warping the covers. Estimated value, consult official manual.
2

Intake Manifold Bolts

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensure airtight seal, prevents vacuum leaks. Estimated value, consult official manual.
3

Exhaust Manifold/Header Bolts

M8 x 1.25
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Ensures a leak-free seal of the exhaust system. Estimated value, consult official manual.
4

Exhaust Manifold/Headers to Cylinder Head Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Ensures a leak-free seal of the exhaust system. Estimated value, consult official manual.
5

EGR Valve Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Ensures secure, leak-free installation. Estimated value, consult official manual.
6

Throttle Body Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Ensures a secure connection, prevent air leaks. Estimated value, consult official manual.
7

High-Pressure Fuel Pump Mounting Bolts

M8 x 1.25
Torque Value
20 ft-lbs (27 N·m)
Important Notes
Prevents fuel leaks and ensures proper pump operation. Estimated value, consult official manual.
8

Vacuum Pump Mounting Bolts

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Ensures a leak-free operation. Estimated value, consult official manual.
9

PCV Valve Mounting Bolts

M6 x 1.0
Torque Value
7 ft-lbs (9 N·m)
Important Notes
Ensures secure sealing of the PCV valve. Avoid overtightening. Estimated value, consult official manual.

Fuel System

Specifications for components related to the fuel system, including fuel rails and injectors.

1

Fuel Rail Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Prevents fuel leaks and maintains proper fuel pressure. Estimated value, consult official manual.
2

Fuel Injector Bolts

M5 x 0.8
Torque Value
6 ft-lbs (8 N·m)
Important Notes
Prevents damage to the injectors and keeps them properly sealed. Estimated value, consult official manual.

Cooling System

Specifications for components related to the engine's cooling system.

1

Water Pump Bolts

M8 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Ensures a leak-free coolant seal. Estimated value, consult official manual.
2

Water Pump Pulley Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Ensures proper belt drive and pump operation. Estimated value, consult official manual.
3

Thermostat Housing Bolts

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Creates a seal to prevent coolant leaks. Estimated value, consult official manual.
4

Coolant Temp Sensor Bolt

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Ensures a leak-free seal, do not overtighten. Estimated value, consult official manual.

Engine Accessories

Specifications for accessory components such as the crankshaft pulley, tensioners, and idler pulleys.

1

Crankshaft Pulley/Harmonic Balancer Bolt

M14 x 1.5
Torque Value
100 ft-lbs (136 N·m)
Important Notes
High torque needed to prevent loosening and vibration. Estimated value, consult official manual.
2

Serpentine/Accessory Drive Belt Tensioner Bolt

M10 x 1.5
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Maintains proper belt tension. Estimated value, consult official manual.
3

Drive Belt Idler Pulley Bolts

M10 x 1.5
Torque Value
30 ft-lbs (41 N·m)
Important Notes
Ensures correct pulley function under belt tension. Estimated value, consult official manual.

Ignition System

Specifications for components related to the ignition system.

1

Spark Plugs

M14 x 1.25
Torque Value
18 ft-lbs (24 N·m)
Important Notes
Specific torque to crush the gasket for proper sealing. Estimated value, consult official manual.
2

Ignition Coil Bolt

M6 x 1.0
Torque Value
7 ft-lbs (9 N·m)
Important Notes
Ensures secure mounting without damaging the coils. Estimated value, consult official manual.

Turbocharging System

Specifications for the turbocharger and its associated components.

1

Turbocharger Oil Feed Line Bolts (Engine Block Side)

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensures a leak-free oil seal. Estimated value, consult official manual.
2

Turbocharger Coolant Feed Line Bolts

M8 x 1.25
Torque Value
15 ft-lbs (20 N·m)
Important Notes
Ensures a leak-free coolant seal. Estimated value, consult official manual.
3

Turbocharger Mounting Bolts

M10 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
Ensures the turbocharger is securely mounted to the manifold and engine. Estimated value, consult official manual.
4

Turbocharger Compressor Inlet Pipe Clamps

Clamp
Torque Value
0 ft-lbs (0 N·m)
Important Notes
Hand-tighten, then 1/4 turn. Avoid overtightening. Estimated value, consult official manual.
5

Turbocharger Compressor Outlet Pipe Clamps

Clamp
Torque Value
0 ft-lbs (0 N·m)
Important Notes
Hand-tighten, then 1/4 turn. Avoid overtightening. Estimated value, consult official manual.
6

Intercooler Piping Clamps

Clamp
Torque Value
0 ft-lbs (0 N·m)
Important Notes
Hand-tighten, then 1/4 turn. Avoid overtightening. Estimated value, consult official manual.

Sensors

Specifications for various engine sensors and their mounting hardware.

1

Exhaust Gas Temp Sensor Bolt

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Ensures proper exhaust seal, avoid overtightening. Estimated value, consult official manual.
2

Oil Pressure Sensor Bolt

M6 x 1.0
Torque Value
10 ft-lbs (14 N·m)
Important Notes
Ensures proper oil seal, avoid overtightening. Estimated value, consult official manual.

Engine Mounts

Specifications for securing the engine mounts to the engine block.

1

Engine Mount Bolts (Engine Side)

M12 x 1.75
Torque Value
50 ft-lbs (68 N·m)
Important Notes
Specific torque for proper alignment, stability, and vibration damping. Estimated value, consult official manual.

Flywheel

Specifications for securing the flywheel to the crankshaft

1

Flywheel Bolts

M12 x 1.5
Torque Value
60 ft-lbs (81 N·m)
Important Notes
Ensures proper power transfer and prevents vibrations. Estimated value, consult official manual.

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

Why are proper torque specifications important for my BMW X5's 4.4L engine?

Correct torque ensures components are held together with the appropriate clamping force. Under-torquing can lead to leaks, vibrations, and part failure, while over-torquing can damage threads, deform parts, or cause bolt breakage. For example, improperly torqued cylinder head bolts can lead to head gasket failure and major engine damage.

Q2

Where can I find the specific torque specifications for each bolt on my 4.4L engine?

The most reliable source for torque specifications is the official BMW repair manual or an equivalent professional automotive database like ALLDATA or TIS. These resources provide accurate and up-to-date information tailored to your specific 2019-Present BMW X5's 4.4L engine.

Q3

What type of torque wrench should I use?

It's highly recommended to use a calibrated torque wrench, either beam-type or click-type, that meets the specified torque range of the fasteners you are tightening. Digital torque wrenches can provide increased accuracy. For example, if the specified torque is 25 Nm, ensure your wrench is calibrated within that range for optimal results.

Q4

Should I apply any lubricants to the threads before tightening?

Generally, dry threads are used unless otherwise specified in the service manual. Some bolts, especially those in the cylinder head, might require a specific lubricant or a torque-to-angle procedure. Always consult your service manual before applying any lubricants. Applying the wrong lubricant or too much can affect the clamping force.

Q5

What if I don't have a torque wrench?

Using a torque wrench is crucial for proper engine assembly. Attempting to tighten bolts 'by feel' can easily lead to under or over-torquing, potentially damaging the engine. If you do not have a torque wrench, you should consider bringing your vehicle to a certified BMW technician.

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)

A calibrated torque wrench is essential for accurate torque application, preventing over or under-tightening of bolts.

  • Wide torque range suitable for engine components
  • Click-type mechanism for accurate torque application
  • Audible click indicates achieved torque value
Learn more

Torque Wrench (3/8" Drive)

A smaller torque wrench for lower torque fasteners found on accessories or intake components.

  • Lower torque range suitable for smaller fasteners
  • Click-type mechanism for precise torque
  • Compact size for accessing tight areas
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets is required to fit the various bolt head sizes used throughout the 4.4L engine.

  • Includes a variety of sizes ranging from 8mm to 24mm
  • Both standard and deep well sockets
  • Durable construction for heavy use
Learn more

Extension Bars

Extension bars are needed to reach bolts in recessed or hard-to-access areas.

  • Various lengths to accommodate different reach needs
  • Secure connection to sockets and ratchets
  • Made from durable steel
Learn more

Universal Joint

A universal joint is necessary for accessing bolts at an angle.

  • Allows sockets to be used at an angle
  • Robust build to withstand torque
  • Increases access in confined areas
Learn more

Angled Torque Adapter

Used to accurately apply torque when the torque wrench is at an angle.

  • Ensures accurate torque readings even at an angle
  • Calibrated to convert the applied torque value
  • Easy to attach and use
Learn more
Service Procedures

Cylinder Head Bolt Torque Procedure

The cylinder head bolts on the 4.4L engine require a specific tightening sequence and multiple torque passes to ensure proper sealing and prevent leaks.

  • Ensure all bolts are clean and lightly oiled.
  • Install cylinder head and hand-tighten all bolts.
  • Torque all bolts to 30 Nm following the specified sequence.
  • Torque all bolts to 70 Nm following the specified sequence.
  • Angle-torque all bolts an additional 90 degrees following the specified sequence.
  • Angle-torque all bolts an additional 90 degrees following the specified sequence.
  • Angle-torque all bolts an additional 30 degrees following the specified sequence.
View full procedure

Main Bearing Cap Bolt Torque Procedure

The main bearing cap bolts require a specific sequence and torque specification to ensure proper crankshaft alignment and engine operation. Using a torque angle gauge is important for accurate results.

  • Install main bearing caps and hand-tighten bolts.
  • Torque all bolts to 20 Nm following the specified sequence.
  • Torque all bolts to 60 Nm following the specified sequence.
  • Angle-torque all bolts an additional 60 degrees following the specified sequence.
  • Angle-torque all bolts an additional 45 degrees following the specified sequence.
View full procedure

Connecting Rod Bolt Torque Procedure

Connecting rod bolts are stretch bolts and must be torqued to the correct specification to ensure proper bearing cap fitment. Replace bolts when reused.

  • Install connecting rod caps and hand-tighten bolts.
  • Torque all bolts to 20 Nm following the specified sequence.
  • Angle-torque all bolts an additional 70 degrees following the specified sequence.
View full procedure
Technical Service Bulletins

Oil Leak at Cylinder Head Cover

2021-03-15

Some 2019-2020 X5 models with the 4.4L engine may experience oil leaks at the cylinder head cover due to incorrect torque settings during manufacturing or previous service.

2019-2020 BMW X5 with 4.4L engine

Resolution: Inspect the cylinder head cover gasket for damage. Replace the gasket and torque the cover bolts to 10 Nm, following the specified sequence.

Crankshaft Main Bearing Bolt Loosening

2022-07-20

Instances of crankshaft main bearing bolts loosening have been reported in some high-performance variants, resulting in engine noise or damage. The specific cause is under investigation.

2021-2022 BMW X5 M50i and X5M with 4.4L engine

Resolution: Inspect and re-torque the crankshaft main bearing bolts to the revised specification of 20 Nm, 60 Nm and then angle-torque an additional 60 degrees and then 45 degrees, following the correct sequence. Replace if stretched.

Connecting Rod Bolt Stretching

2023-09-01

Some instances of connecting rod bolts being stretched beyond their limit during high-performance operation have been reported. Bolts MUST be replaced on reuse. Always use new torque bolts during service.

2019-2023 BMW X5 with 4.4L engine

Resolution: Always replace the connecting rod bolts and follow the torque to yield specification of 20 Nm and 70 Degrees.

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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