Cylinder liner for Cummins 912 CID

The cylinder liner, part number 4309389, functions as the internal wall of the cylinder block in the Cummins 912 CID engine. It provides a precise surface for the piston rings to travel against during the combustion cycle. This component maintains the seal necessary for proper compression within the combustion chamber while also acting as a thermal bridge, transferring heat from the piston and combustion gases to the engine cooling system.

This component is compatible with the Cummins 912 CID engine. It is engineered to meet the specific dimensional requirements of this engine block to ensure a proper fit during assembly or overhaul procedures.

In internal combustion engines, cylinder liners are used to define the cylinder bore and protect the engine block from the friction and heat generated by the reciprocating piston assembly. By providing a replaceable wear surface, the liner allows for the restoration of the cylinder geometry without requiring the replacement of the entire engine block.