Cylinder liner for Scania D7A/ B

The cylinder liner provides a precise sliding surface for the piston as it moves within the engine block. By housing the piston and rings, this component maintains the internal geometry required for efficient combustion and compression within the engine assembly.

This specific part, part number 037WN42, is engineered for fitment in Scania D7A and D7B engines. It acts as a replaceable barrier that protects the engine block from the friction and thermal stress generated during the combustion cycle.

Cylinder liners are used in internal combustion engines to manage the heat transfer from the piston to the cooling system while preventing direct contact between the piston rings and the engine block material. Proper installation ensures that the cylinder maintains its circularity and sealing capability under operating pressures.