Cylinder liner for Mercedes-Benz OM611

The cylinder liner, part number 89866190, is a component for the Mercedes-Benz OM611 engine. It is installed into the engine block to provide a defined sliding surface for the piston during operation. By acting as a replaceable barrier, it protects the engine block from direct contact with the piston and the thermal stresses associated with the combustion cycle.

This component is compatible with the Mercedes-Benz OM611 engine. It is engineered to maintain the necessary contact surface for the piston rings, which facilitates proper compression and sealing within the combustion chamber. The liner is designed to meet the specific dimensional requirements of the engine block to ensure a correct fit during assembly.

In internal combustion engines, cylinder liners serve to manage friction and heat transfer between the piston assembly and the block. They provide a controlled environment for the piston to reciprocate, helping to maintain oil film consistency and combustion pressure. Regular inspection and replacement of these liners are standard procedures during engine overhauls to restore clearance specifications and engine efficiency.