Cylinder liner for Perkins T4.40

The cylinder liner, part number 89320190, serves as the internal sleeve for the Perkins T4.40 engine. It forms the primary wall of the combustion chamber where the piston travels during operation. By providing a replaceable surface, this component manages the friction generated by the piston rings and facilitates the transfer of heat from the combustion process to the engine cooling system.

This component is compatible with the Perkins T4.40 engine model. It is designed to meet the specific dimensional requirements of this engine block to ensure proper compression sealing and oil control. Maintenance teams often install new liners during engine overhauls to restore the cylinder bore geometry.

In internal combustion engines, cylinder liners act as a barrier between the piston assembly and the engine block. They protect the block from direct wear and allow for the restoration of the cylinder diameter without requiring the replacement of the entire engine block. Proper installation ensures that the piston rings maintain an effective seal, which is necessary for maintaining engine power and preventing excessive oil consumption.