Cylinder liner for Scania D9A

The cylinder liner, part number 20381125, is a component for the Scania D9A engine. It is inserted into the engine block to form the inner wall of the combustion chamber, providing a precise surface for the piston to travel against during operation. This component is responsible for maintaining the seal required for engine compression and assists in transferring heat from the combustion process to the cooling system.

This part is compatible with the Scania D9A engine. It serves as the interface between the piston rings and the engine block, ensuring the mechanical integrity of the cylinder assembly. The dimensions and tolerances of this liner are specific to the requirements of the D9A engine configuration.

Cylinder liners are used in internal combustion engines to create a replaceable wear surface for the pistons. By housing the piston movement, they protect the engine block from direct friction and heat exposure. Proper installation of the liner is necessary to ensure the combustion chamber remains sealed and that heat dissipation is managed effectively across the engine block.