A0021301115 Mercedes-Benz O 403 OM 457 LA Compatible Cylinder Head

What does a compressor cylinder head do?

This cylinder head serves as the critical component that closes the top of the air brake compressor cylinder block, housing the inlet and discharge valve seats. It is engineered to maintain pressure without leakage while facilitating heat dissipation from the compression cycle. Built with high-strength components, it ensures the compressor maintains consistent pressure delivery for the entire air brake system.

Vehicle and engine compatibility

This specific part is compatible with Mercedes-Benz O 403 and O 403 SHD models featuring the OM 457 LA engine. To ensure correct fitment, technicians should verify the compressor's specific architecture and mounting pattern against the existing unit on the vehicle.

Installation and maintenance guidance

During installation, it is vital to ensure all mating surfaces are perfectly clean and to use a new gasket to prevent pressure loss. For optimal performance, always check the valve seat integrity and follow the manufacturer's torque specifications during assembly. Consult your authorized distributor for further technical guidance.

System reliability and troubleshooting

Maintaining a healthy cylinder head is essential to prevent system pressure drops that can affect braking performance. Regular inspection of the valve seats and ports can help identify early signs of wear before they lead to significant system failure.

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 A0021301115.