002 130 11 15 Mercedes-Benz O 403 OM 457 LA Cylinder Head

What does a compressor cylinder head do?

This compressor cylinder head is the cast service part that closes off the top of an air brake compressor's cylinder block and carries the seats for the inlet and discharge valves. It holds the piston's compressed air without leaking, routes it out through the discharge port, and carries away part of the compression heat from the body. This component directly determines an air brake compressor's ability to build pressure, and when neglected it drags down the fill performance of the whole brake circuit.

Compatible vehicles and engines

This specific head is compatible with Mercedes-Benz O 403 and O 403 SHD models, specifically those utilizing the OM 457 LA engine. When selecting this part, it is vital to confirm the compressor's own reference number, cylinder count, and cooling type to ensure a perfect match with the existing compressor architecture.

Installation and maintenance

For a successful repair, technicians should ensure surface cleanliness and follow staged tightening procedures during installation. It is highly recommended to renew the gasket and valve assembly together with this cylinder head to prevent future leaks. Always consult the vehicle manufacturer's service manual for specific torque requirements during assembly.

Troubleshooting and selection

Using high-strength components during rebuilding helps maintain the integrity of the pneumatic system under heavy commercial vehicle operating conditions.

OE cross-reference

11 25 50 (Compressor Cylinder Head) is the equivalent of the Mercedes-Benz OE number. This part directly replaces Mercedes-Benz OE number 0021301115.