5473086
Engine Piston Kit
Cummins®

The Engine Piston Kit (Part Number: 5473086) for Cummins® commercial trucks is a crucial component of the engine assembly. It consists of a piston, piston rings, piston pin, and retaining clips. The piston is a cylindrical piece that moves up and down inside the cylinder bore of the engine. Its primary function is to transfer force from the expanding gases in the combustion chamber to the engine's crankshaft through the connecting rod. The piston rings are installed around the piston's outer circumference and create a seal between the piston and the cylinder walls. These rings prevent excessive blow-by of combustion gases, keep the oil in the crankcase, and assist in transferring heat from the piston to the cylinder walls. The piston pin, also known as the wrist pin, connects the piston to the connecting rod. It allows the piston to pivot and move freely while transmitting the reciprocating motion from the connecting rod to the piston. The retaining clips ensure the secure attachment of the piston pin to the piston and prevent any unwanted movement or detachment during engine operation. Overall, the Engine Piston Kit plays a vital role in the combustion process, transferring power from the expanding gases to the crankshaft and contributing to the efficient operation of the Cummins® commercial truck engine.