Cylinder liner for Perkins T4.40

The cylinder liner, part number 748216M1, functions as a replaceable sleeve inserted into the engine block of the Perkins T4.40. It provides the necessary sliding surface for the piston assembly during operation. By acting as a barrier between the piston and the engine block, this component manages the internal environment of the combustion chamber while facilitating heat transfer away from the piston to the cooling system.

This component is specifically engineered for the Perkins T4.40 engine model. It is designed to maintain the required internal diameter to ensure proper clearance for the piston and rings, which is necessary for maintaining engine compression and controlling oil consumption during the combustion cycle.

In heavy machinery engines, cylinder liners are used to protect the main engine block from direct wear and thermal stress. They allow for the restoration of the cylinder bore surface without requiring the replacement of the entire engine block. Proper installation ensures that the liner remains seated correctly, supporting the structural integrity of the cylinder assembly under varying operating pressures.