51541056021 MAN ND Compatible Cylinder Liner

What does a cylinder liner do?

This cylinder liner serves as a critical component within the air brake compressor, forming the essential compression chamber where the piston travels. By providing a smooth, durable surface, it prevents air leakage and maintains stable pressure levels required for braking performance. Using high-strength components ensures long-term reliability under heavy-duty operating conditions.

Compatibility with MAN ND models

This specific part is designed to fit MAN ND series vehicles, including the 313 and 363 models. It serves as a direct replacement for components used in heavy commercial vehicle air systems to restore pressure-generating capacity without replacing the entire compressor unit.

Installation and maintenance

During installation, workshop technicians should ensure the cylinder bore is free of contaminants and verify that all sealing surfaces are prepared. Maintaining cleanliness during assembly is vital to prevent premature wear of the piston rings and liner interface.

Troubleshooting pressure loss

If you notice air leakage or a drop in system pressure, inspecting the cylinder liner is a recommended troubleshooting step to restore efficient pneumatic operation.

OE cross-reference

7000 104 300 (Compressor Cylinder Liner) is the equivalent of the MAN OE number. This part directly replaces MAN OE number 51541056021.