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911 154 511 0 S1 Compressor Cylinder Head for Air Brake Systems
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911 154 511 0 S1 Compatible Compressor Cylinder Head

25 08 11

Summary

This compressor cylinder head serves as the critical seal for the compression chamber in heavy commercial vehicle air brake compressors. Designed to withstand high-pressure environments, it ensures optimal air output and temperature regulation. Compatible with WABCO systems. Equivalent to OE WABCO 9111545110S1.

Product identifiers
EAN Code8699031024127
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Compatible OEM Codes

  • WABCO
    • 911 154 520 0 S1
    • 911 154 519 0 S1
    • 911 154 511 0 S1
    • 911 154 510 0 S1
    • 911 154 509 0 S1
  • CUMMINS
    • 3976362 S1
    • 3949095 S1
    • 3948842 S1
    • 3944460 S1
    • 3936808 S1

Description

What does a compressor cylinder head do?

This compressor cylinder head acts as the cast service component that sits on top of an air brake compressor's cylinder block, sealing the compression chamber from above. It is a vital component for workshop technicians looking to rebuild a compressor in place rather than replacing the entire unit. The head contains the seats for the inlet and discharge valves, internal air passages, and cooling cavities, directly governing both air output and running temperature.

Vehicle and system compatibility

This component is designed for heavy commercial vehicle applications. It is compatible with WABCO systems and other heavy-duty air brake assemblies. Precise fitment ensures that the compression chamber remains sealed under high pressure, maintaining the integrity of the pneumatic braking system.

Installation and maintenance

When performing maintenance or repairs, technicians should inspect the valve seats and cooling channels within the head. Ensuring a clean mating surface between the cylinder block and this component is essential for preventing pressure leaks. Proper installation ensures long-term reliability of the air brake compressor assembly.

Troubleshooting guidance

If you observe a drop in air pressure or overheating in the compressor, inspecting this part is a recommended troubleshooting step.

OE cross-reference

25 08 11 (Compressor Cylinder Head) is the equivalent of the WABCO OE number. This part directly replaces WABCO OE number 9111545110S1.

Other OEMs

CUMMINS

  • 3976362 S1
  • 3949095 S1
  • 3948842 S1
  • 3944460 S1
  • 3936808 S1

WABCO

  • 9111545200S1
  • 9111545190S1
  • 9111545110S1
  • 9111545100S1
  • 9111545090S1
  • 911 154 520 0 S1
  • 911 154 519 0 S1
  • 911 154 511 0 S1
  • 911 154 510 0 S1
  • 911 154 509 0 S1

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
CUMMINS
WABCO

FAQ

What is the function of a compressor cylinder head?
The cylinder head seals the compression chamber from above and houses the inlet and discharge valve seats, regulating 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 by replacing only the top cover rather than the whole unit.
Which systems is this component compatible with?
This part is designed to be compatible with WABCO systems and other heavy commercial vehicle air brake compressors.
What are common symptoms of a faulty cylinder head?
Common signs include a significant drop in air pressure output or abnormal operating temperatures during heavy-duty use.
What are the OE reference numbers of this part?
25 08 11 directly replaces WABCO OE number 9111545110S1.