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LK3805 S1 Cylinder Head Compatible with Knorr-Bremse

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LK3805 S1 Cylinder Head for Knorr-Bremse Systems

12 11 50

Summary

This cylinder head is a critical component for air brake compressor systems. Designed to seal the compression chamber and house valve seats, it ensures efficient air output and temperature regulation. Compatible with Knorr-Bremse systems. Equivalent to OE Knorr-Bremse LK3805S1.

Product identifiers
EAN Code8699031021188
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Compatible OEM Codes

  • KNORR-BREMSE
    • LP3943 S1
    • LP3940 S1
    • LP3934 S1
    • LP3928 S1
    • LP3830 S1
    • LK3832 S1
    • LK3826 S1
    • LK3809 S1
    • LK3808 S1
    • LK3806 S1
    • LK3805 S1
    • LK3802 S1
  • MAN
    • 51.54101-7204 S1
    • 51.54101-7201 S1
    • 51.54101-7195 S1
    • 51.54101-7189 S1
    • 51.54101-7150 S1

Description

What does a cylinder head do?

This 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 designed to allow workshop technicians to rebuild a compressor in place rather than replacing the entire unit. Inside the head, the seats for the inlet and discharge valves, internal air passages, and cooling cavities are located, which directly governs both the air output and the running temperature of the compressor.

Compatibility and application

This component is compatible with Knorr-Bremse systems. It serves as a vital part for maintaining pneumatic pressure in heavy commercial vehicle braking systems, ensuring reliable operation under high-load conditions.

Installation and maintenance

When performing maintenance, technicians should verify the specific architecture of the compressor, as heads may vary between single-cylinder and twin-cylinder configurations. Ensure all valve seats and internal passages are inspected during installation to maintain optimal seal integrity and prevent pressure drops.

Selection guidance

Consult your authorized distributor for further information on application-specific fitment.

OE cross-reference

12 11 50 (Compressor Cylinder Head) is the equivalent of the Knorr-Bremse OE number. This part directly replaces Knorr-Bremse OE number LK3805S1.

Other OEMs

KNORR-BREMSE

  • LP3943 S1
  • LP3940 S1
  • LP3934 S1
  • LP3928 S1
  • LP3830 S1
  • LK3832 S1
  • LK3826 S1
  • LK3809 S1
  • LK3808 S1
  • LK3806 S1
  • LK3805 S1
  • LK3802 S1

MAN

  • 51541017204S1
  • 51541017201S1
  • 51541017195S1
  • 51541017189S1
  • 51541017150S1
  • 51.54101-7204 S1
  • 51.54101-7201 S1
  • 51.54101-7195 S1
  • 51.54101-7189 S1
  • 51.54101-7150 S1

Compatible Vehicles

Compatible Vehicles
BrandModelModel TypeEngine
KNORR-BREMSE
MAN

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, directly influencing air output and temperature.
Can this part be used to rebuild an existing compressor?
Yes, this component allows workshop technicians to rebuild an air brake compressor in place instead of replacing the entire unit.
How do I ensure correct fitment for my compressor?
Selection should always be based on the specific compressor architecture and reference number to ensure correct valve seat and port alignment.
What should be checked during installation?
Technicians should inspect internal air passages and cooling cavities to ensure proper thermal regulation and pressure integrity during service.
What are the OE reference numbers of this part?
12 11 50 directly replaces Knorr-Bremse OE number LK3805S1.