4376346
Engine Piston Kit
Cummins®

An engine piston kit, identified by part number 4376346, is a collection of components that make up the piston assembly in an internal combustion engine. The kit typically includes one or more pistons, piston rings, wrist pins and circlips. The piston is the cylindrical component that moves up and down within the engine cylinder bore during the intake, compression, power and exhaust strokes of the four-stroke cycle. Piston rings are installed onto grooves in the piston to provide a seal between the piston and cylinder wall to prevent combustion gases from escaping past the piston into the crankcase. Wrist pins connect each end of a connecting rod to a corresponding hole in each side of a piston skirt. Circlips secure wrist pins in place so they don't slide out of their holes during operation. The engine piston kit plays an important role in converting fuel into mechanical energy to propel vehicles forward or perform other tasks such as powering generators or pumps.