BMW M52TU/M54 Dual VANOS Piston Bearing & Spacer Replacement Kit

When rebuilding the Dual VANOS unit on your BMW M52TU or M54 engine, replacing the internal piston bearing components is an important part of properly refreshing the assembly. Our Dual VANOS Piston Bearing & Spacer Replacement Kit includes the internal bearing spacers and washers used inside both the intake and exhaust VANOS piston assemblies.

Over time, wear within the VANOS piston bearing assemblies can contribute to excessive internal movement and the familiar Dual VANOS rattle. These components are especially useful when rebuilding a VANOS unit where the original bearing hardware is worn, damaged, or missing.

BMW does not normally offer these internal bearing components separately, making this kit a convenient alternative to replacing the complete VANOS assembly.

Note: We recommend inspecting and replacing the VANOS piston seals and bearing components together whenever rebuilding the Dual VANOS unit.

Kit Includes

• 2 VANOS Piston Bearing Spacers
• 4 VANOS Piston Bearing Washers
• Services both the intake and exhaust VANOS pistons
• Direct replacement for the internal Dual VANOS bearing hardware

Common Symptoms of a Worn VANOS System

A worn or failing Dual VANOS system may contribute to:

• Loss of low- and mid-range torque
• Reduced engine performance
• Uneven power delivery
• VANOS rattle or excessive mechanical noise
• Rough or uneven idle
• Sluggish acceleration
• Increased fuel consumption
• VANOS-related fault codes

Recommended VANOS Service

For a more complete rebuild, we recommend replacing the VANOS piston seals and anti-rattle bearing componentswhile the VANOS unit is disassembled. Combining fresh seals with properly serviced piston bearing assemblies helps address multiple common wear points at the same time.

BMW M52TU & M54 Fitment Guide

3 Series

5 Series

7 Series

X3

X5

Z3

Z4

Engine Compatibility

Designed for BMW Dual VANOS engines including:

M52TU • M54

This kit may also be applicable to certain M56 Dual VANOS applications using the same internal piston bearing design. Verify the VANOS unit and engine application before ordering.

Important Fitment Note

BMW used multiple engine families within the same chassis and model years. Fitment should be verified by engine code rather than chassis alone. This kit is intended for vehicles equipped with the BMW M52TU or M54 Dual VANOS system.

Whether you're performing preventative maintenance or a complete VANOS overhaul, this Dual VANOS Piston Bearing & Spacer Replacement Kit provides the internal hardware needed to properly service both VANOS piston bearing assemblies.