BMW X5 2013-2018 3.0L Engine Bolt Torque Specifications & Fastener Values
BMW X5 2013-2018

BMW X5 2013-2018 3.0L Engine Bolt Torque Specifications

Comprehensive list of bolt torque specifications for the 3.0L engine in the 2013-2018 BMW X5 (F15) model, including cylinder head, main bearing, connecting rod, and other critical engine components.

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 and engine block

Torque specifications for bolts securing the cylinder head to the engine block, and other related components.

1

Cylinder Head Bolts

M12 x 1.5
Torque Value
18 ft-lbs (25 N·m)
Important Notes
These bolts secure the cylinder head to the engine block, ensuring proper compression and preventing engine damage.
2

Engine Block to Transmission Mounting Bolts

M14 x 2
Torque Value
40 ft-lbs (54 N·m)
Important Notes
These bolts secure the engine block to the transmission mount, maintaining engine stability and preventing vibration. (Estimated value)
3

Engine Block to Engine Mounting Bolts

M14 x 2
Torque Value
40 ft-lbs (54 N·m)
Important Notes
These bolts hold the engine block to the engine mount, maintaining engine stability and preventing vibration. (Estimated value)

Main bearings and crankshaft

Torque specifications for bolts securing the main bearings and crankshaft-related components.

1

Main Bearing Bolts

M14 x 1.5
Torque Value
60 ft-lbs (80 N·m)
Important Notes
These bolts hold the main bearings in place, supporting the crankshaft and maintaining engine stability.
2

Crankshaft Position Sensor Bolt

M8 x 1.25
Torque Value
10 ft-lbs (14 N·m)
Important Notes
This bolt secures the crankshaft position sensor, providing critical engine timing information. (Estimated value)
3

Flywheel Bolts

M12 x 1.5
Torque Value
85 ft-lbs (115 N·m)
Important Notes
These bolts attach the flywheel to the crankshaft, enabling the transmission to engage with the engine.
4

Crankshaft Pulley/Harmonic Balancer Bolt

M12 x 1.5
Torque Value
85 ft-lbs (115 N·m)
Important Notes
This bolt secures the crankshaft pulley or harmonic balancer, maintaining engine balance and preventing vibration.

Valvetrain and timing system

Torque specifications for bolts securing the valvetrain and timing system components.

1

Valve Cover Bolts

M8 x 1.25
Torque Value
8 ft-lbs (11 N·m)
Important Notes
These bolts hold the valve cover in place, protecting the engine's valve train and preventing oil leaks.
2

Camshaft Sprocket Bolt

M12 x 1.5
Torque Value
85 ft-lbs (115 N·m)
Important Notes
This bolt attaches the camshaft sprocket to the camshaft, ensuring proper valve timing and engine operation.
3

Timing Belt/Chain Tensioner Bolt

M12 x 1.5
Torque Value
30 ft-lbs (40 N·m)
Important Notes
This bolt secures the timing belt or chain tensioner, maintaining proper timing and preventing engine damage.
4

Camshaft Position Sensor Bolt

M8 x 1.25
Torque Value
10 ft-lbs (14 N·m)
Important Notes
This bolt holds the camshaft position sensor in place, providing critical engine timing information. (Estimated value)
5

Rocker Arms/Shafts Bolts

M10 x 1.5
Torque Value
19 ft-lbs (26 N·m)
Important Notes
These bolts hold the rocker arms or shafts in place, operating the valves and maintaining engine performance.

Air and fuel system

Torque specifications for bolts securing the air and fuel system components.

1

Throttle Body Bolts

M8 x 1.25
Torque Value
8 ft-lbs (11 N·m)
Important Notes
These bolts hold the throttle body in place, regulating airflow and engine performance.
2

Intake Manifold Bolts

M10 x 1.5
Torque Value
8 ft-lbs (11 N·m)
Important Notes
These bolts secure the intake manifold to the engine, directing airflow and fuel into the cylinders.
3

Fuel Rail Bolts

M8 x 1.25
Torque Value
8 ft-lbs (11 N·m)
Important Notes
These bolts secure the fuel rail to the engine, supplying fuel to the cylinders.
4

Fuel Pressure Regulator Bolt

M10 x 1.5
Torque Value
15 ft-lbs (20 N·m)
Important Notes
This bolt secures the fuel pressure regulator, maintaining proper fuel pressure and engine performance. (Estimated value)

Exhaust system

Torque specifications for bolts securing the exhaust system components.

1

Exhaust Manifold/Headers Bolts

M12 x 1.5
Torque Value
26 ft-lbs (35 N·m)
Important Notes
These bolts attach the exhaust manifold or headers to the engine, directing exhaust gases out of the cylinders.
2

EGR Valve Bolts

M8 x 1.25
Torque Value
18 ft-lbs (25 N·m)
Important Notes
These bolts hold the EGR valve in place, regulating exhaust gas recirculation and reducing emissions.

Cooling system

Torque specifications for bolts securing the cooling system components.

1

Water Pump Bolts

M10 x 1.5
Torque Value
8 ft-lbs (11 N·m)
Important Notes
These bolts secure the water pump to the engine, circulating coolant and regulating engine temperature.
2

Thermostat Housing Bolts

M10 x 1.5
Torque Value
8 ft-lbs (11 N·m)
Important Notes
These bolts hold the thermostat housing in place, regulating engine temperature and coolant flow.

Lubrication system

Torque specifications for bolts securing the lubrication system components.

1

Oil Pan Bolts

M10 x 1.5
Torque Value
11 ft-lbs (15 N·m)
Important Notes
These bolts secure the oil pan to the engine block, containing the engine oil and preventing leaks.
2

Oil Filter Housing Bolt

M10 x 1.5
Torque Value
18 ft-lbs (25 N·m)
Important Notes
This bolt secures the oil filter housing, containing the oil filter and maintaining engine lubrication.
3

Oil Drain Plug Bolt

M12 x 1.5
Torque Value
25 ft-lbs (34 N·m)
Important Notes
This bolt seals the oil drain plug, preventing oil leaks and maintaining engine lubrication.

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 torque specifications important when working on my BMW X5's 3.0L engine?

Proper torque specifications ensure that fasteners are neither too loose, which could lead to parts falling off or leaks, nor too tight, which could damage threads, bolts, or engine components. Using a torque wrench is critical for accurate fastening. For example, overtightening cylinder head bolts can lead to head warping and costly repairs.

Q2

What happens if I overtighten or undertighten a bolt?

Overtightening can stretch or break bolts, damage threads, and crush gaskets, leading to leaks and component failure. Undertightening can cause fasteners to loosen under vibration and stress, resulting in leaks, movement of components, and possible part failure. An example is loose valve cover bolts causing an oil leak.

Q3

Should I replace bolts when working on the engine?

Some bolts, especially those subjected to high stress or specific torque-to-yield procedures, should be replaced each time they are loosened. For instance, cylinder head bolts often require replacement to ensure proper clamping force. Always refer to the repair manual for specific recommendations.

Q4

How often should I check the torque of engine bolts?

Generally, torque specifications do not need regular checks unless a component has been recently serviced, or if a leak is detected from a bolted area. After a repair, double check torque specifications after a few drive cycles. If a gasket has been replaced, monitor that area for leaks after repairs. Also, after initial assembly, it is critical to ensure accurate torque prior to operation. An example is checking torque on an intake manifold bolts after installing the manifold.

Q5

Are the torque specifications the same for all 3.0L engines in the 2013-2018 BMW X5?

While many torque specifications are similar across various iterations of the 3.0L engine within the 2013-2018 BMW X5 range (N55), some variations exist. Always consult the specific repair manual or online database for the exact engine code (e.g., N55B30A) found in your vehicle to ensure accurate torque specifications.

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 inch Drive)

A calibrated torque wrench is essential for accurately tightening bolts to the specified torque.

  • Wide torque range (e.g., 10-150 ft-lbs)
  • Click-type mechanism for accurate torque application
  • 1/2 inch drive for common socket sizes
Learn more

Torque Wrench (3/8 inch Drive)

A smaller torque wrench for lower torque specifications on smaller bolts.

  • Lower torque range (e.g., 5-80 ft-lbs)
  • Click-type mechanism for accurate torque application
  • 3/8 inch drive for smaller socket sizes
Learn more

Socket Set (Metric)

A comprehensive set of metric sockets for various bolt head sizes.

  • Standard depth and deep sockets
  • Sizes ranging from 8mm to 19mm (and larger for specific components)
  • 1/2 inch and 3/8 inch drive sockets
Learn more

E-Torx Socket Set

Required for specific BMW components that utilize E-Torx (external Torx) fasteners.

  • Sizes E8 - E20
  • Both standard and deep socket configurations
Learn more

Torque Angle Meter

An angle meter is required for bolts that specify torque + angle tightening.

  • Measures the angle of rotation after initial torque application
  • Digital and analog versions available
  • Adaptable to various ratchet sizes
Learn more
Service Procedures

Cylinder Head Bolt Tightening Procedure

Procedure for correctly tightening the cylinder head bolts on the N55 3.0L engine.

  • Clean threads and bolt heads.
  • Apply new bolts as torque to yield are required.
  • Tighten all cylinder head bolts in sequence to 30 Nm (22 ft-lbs).
  • Tighten all cylinder head bolts in sequence to 70 Nm (52 ft-lbs).
  • Tighten all cylinder head bolts in sequence by 90 degrees.
  • Tighten all cylinder head bolts in sequence by another 90 degrees.
View full procedure

Intake Manifold Bolt Tightening Procedure

Procedure for correctly tightening the intake manifold bolts on the N55 3.0L engine.

  • Clean threads and bolt heads.
  • Hand-tighten all intake manifold bolts.
  • Tighten all intake manifold bolts to 10 Nm (7 ft-lbs) in sequence.
  • Tighten all intake manifold bolts to 20 Nm (15 ft-lbs) in sequence.
View full procedure

Main Bearing Cap Bolt Tightening Procedure

Procedure for correctly tightening the main bearing cap bolts on the N55 3.0L engine.

  • Clean threads and bolt heads.
  • Apply new bolts as torque to yield are required.
  • Tighten all main bearing cap bolts in sequence to 20 Nm (15 ft-lbs).
  • Tighten all main bearing cap bolts in sequence to 50 Nm (37 ft-lbs).
  • Tighten all main bearing cap bolts in sequence by 70 degrees.
View full procedure
Technical Service Bulletins

N55 Engine - Cylinder Head Bolt Issues

2015-07-15

Some N55 engines may exhibit cylinder head bolt issues due to manufacturing variances which can result in head gasket failure. Check for any signs of coolant or oil leaks near the cylinder head and proper torque values and tightening sequences should be verified.

2013-2015 X5 35i (N55 engine)

Resolution: Replace cylinder head bolts with revised bolts and follow correct tightening procedures. Verify head surface is true.

N55 Engine - Oil Pan Bolt Loosening

2016-03-20

Certain N55 engines may experience oil pan bolt loosening over time due to vibrations. This can lead to oil leaks from the oil pan gasket. Ensure bolts are tightened to specification and apply thread-locking compound.

2013-2016 X5 35i (N55 engine)

Resolution: Remove the oil pan, replace the gasket, clean the bolt threads, apply thread-locking compound, and tighten to the specified torque.

N55 Engine - VANOS Bolt Update

2017-11-10

An updated procedure for VANOS bolt tightening to prevent loosening of the fasteners. Torque is critical and must be followed per the updated technical instructions.

2013-2018 X5 35i (N55 engine)

Resolution: Re-torque VANOS bolts using updated tightening specifications with correct tooling and verify that the VANOS is functioning correctly following procedures.

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.

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

Diagnostic

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

Repair

Expert in both traditional mechanical repairs and modern vehicle systems.

Additional Expertise

Documentation

Created over 500 detailed repair guides and technical documents.

Training

Conducted technical training sessions and contributed to repair databases.

Certifications & Research

Certifications

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

Research & Community

Actively researches emerging technologies and contributes to automotive forums.

Legal Disclaimer

Important information about using this content

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

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

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

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

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

© 2025 BMW Specs. All rights reserved.

Privacy Policy Terms of Service