Cylinder liner for Mercedes-Benz OM421

The cylinder liner, part number 0038200, is a component for the Mercedes-Benz OM421 engine. It is installed within the engine block to provide a precise sliding surface for the piston during the combustion cycle. By acting as a replaceable barrier, this liner protects the engine block from the friction and thermal loads generated during operation while maintaining the necessary seal for compression efficiency.

This component is compatible with the Mercedes-Benz OM421 engine. It is engineered to meet the specific dimensional requirements of this engine series to ensure proper fitment and alignment within the cylinder bore.

Cylinder liners are used in internal combustion engines to create a durable, replaceable wall for the combustion chamber. They facilitate heat transfer from the piston to the cooling system and provide a controlled environment for the piston rings to maintain pressure. Regular inspection and replacement of liners are standard procedures during engine overhauls to restore compression and prevent oil consumption issues.