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911 553 921 2 Compressor Cylinder Head for WABCO Systems
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911 553 921 2 WABCO Compatible Compressor Cylinder Head

11 01 20

Summary

This high-strength compressor cylinder head is designed for heavy commercial vehicle air brake compressors. It serves as a critical component for rebuilding units, ensuring proper sealing of the compression chamber and managing internal air passages. Compatible with WABCO systems. Equivalent to OE WABCO 9115539212.

Product identifiers
EAN Code8699031043586
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Compatible OEM Codes

  • WABCO
    • 911 553 921 2
    • 911 553 656 2
  • MERCEDES BENZ
    • 001 130 16 15

Description

What does a compressor cylinder head do?

This compressor cylinder head acts as the primary seal sitting atop the air brake compressor cylinder block, effectively closing the compression chamber from above. By replacing this component, workshop technicians can perform a precise rebuild of the compressor in place, avoiding the need for a full unit replacement. It is a vital part for maintaining optimal air output and managing running temperatures within the pneumatic system.

Compatibility and application

This component is designed to be compatible with WABCO systems. Its architecture ensures that internal air passages and valve seats are correctly aligned to maintain consistent pressure delivery under heavy-duty operating conditions.

Installation and maintenance

When performing installation, technicians should ensure the cylinder block surface is clean and that all gaskets are properly seated to prevent pressure leaks. Regular inspection of the valve seats within the head is recommended during routine maintenance to ensure peak performance and prevent air leaks.

Selection guidance

Selecting the correct head is essential, as different compressor architectures—such as single-cylinder or twin-cylinder configurations—require specific head designs to match the engine and compressor setup.

OE cross-reference

11 01 20 (Compressor Cylinder Head) is the equivalent of the WABCO OE number. This part directly replaces WABCO OE number 9115539212.

Other OEMs

MERCEDES BENZ

  • A0011301615
  • 0011301615
  • 001.130.1615
  • 001.130.16.15
  • 001 130 1615
  • 001 130 16 15

WABCO

  • 9115539212
  • 9115536562
  • 911.553.921.2
  • 911.553.656.2
  • 911 553 921 2
  • 911 553 656 2

Related Products

Used In

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
MERCEDES BENZ
WABCO

FAQ

What is the function of a compressor cylinder head?
It seals the compression chamber from above and contains the inlet and discharge valve seats, directly governing air output and temperature.
Can this part be used to rebuild an existing compressor?
Yes, this component allows workshop technicians to rebuild a compressor in place rather than replacing the entire unit.
What should be checked during installation?
Technicians should ensure the cylinder block surface is clean and that all sealing surfaces are free of debris to prevent pressure loss.
How do I know if this head fits my compressor?
Selection should be based on the specific architecture of your compressor, as designs vary between single-cylinder and twin-cylinder units.
What are the OE reference numbers of this part?
11 01 20 directly replaces WABCO OE number 9115539212.