Cylinder liner for Renault Trucks MIDR 623

The cylinder liner, part number 7421105699, is a component for the Renault Trucks MIDR 623 engine. This cylindrical sleeve is installed into the engine block to provide a precise sliding surface for the piston and to define the combustion chamber. It acts as a barrier that protects the engine block from direct contact with the piston and rings while facilitating the transfer of heat away from the combustion area to the cooling system.

This component is compatible with the Renault Trucks MIDR 623 engine model. It is engineered to maintain the required internal diameter and surface finish to ensure proper compression and oil control during engine operation.

In internal combustion engines, cylinder liners are used to create a wear-resistant surface for the piston rings to travel against. By housing the combustion process, the liner maintains the integrity of the cylinder bore and allows for maintenance of the engine block by providing a replaceable surface that can be serviced or replaced if the internal diameter exceeds specified tolerances over time.