Cylinder liner for Scania TD120

The cylinder liner, part number 478149, is a cylindrical component installed within the engine block of the Scania TD120. It provides the internal surface for the piston and piston rings to move against during the combustion cycle. By housing the piston, the liner facilitates the transfer of heat generated within the combustion chamber to the engine cooling system, helping to manage thermal loads during operation.

This component is specifically engineered for fitment in the Scania TD120 engine series. Proper installation of the liner is necessary to maintain correct internal clearances and compression levels within the engine cylinders. When the existing liner surface shows signs of wear, scoring, or damage, replacing it with this component helps restore the sealing integrity required for the engine to maintain its power output and operating efficiency.

In internal combustion engines, cylinder liners act as the primary interface for reciprocating components. They are designed to withstand the high pressures and temperatures present during the power stroke while providing a stable path for the piston assembly. Maintaining the condition of the cylinder wall is necessary for effective oil control and consistent compression across all cylinders in the engine block.