4955530
Engine Piston Kit
Cummins®

The Engine Piston Kit (Part Number: 4955530) for Cummins® commercial trucks is a crucial component of the engine. It consists of the piston, piston rings, piston pin, and retaining clips. The piston is a cylindrical metal component that moves up and down inside the engine cylinder. It is responsible for transferring the force generated by the combustion of fuel to the crankshaft, which ultimately powers the vehicle. The piston rings, which are fitted around the piston, provide a tight seal between the piston and the cylinder wall. They prevent the combustion gases from leaking into the crankcase and help maintain compression within the engine. Additionally, the piston rings aid in distributing lubricating oil along the cylinder walls to minimize friction. The piston pin, also known as the wrist pin, connects the piston to the connecting rod. It allows the piston to pivot and move back and forth within the cylinder, transforming the reciprocating motion into rotational motion. The retaining clips secure the piston pin in place, preventing it from dislodging during engine operation. They ensure the proper alignment and stability of the piston, allowing it to function optimally. Overall, the Engine Piston Kit plays a vital role in the combustion process by converting pressure into mechanical energy, assisting in sealing the combustion chamber, and ensuring efficient engine performance for Cummins® commercial trucks.