Piston Pin 8‑94396731‑0 8943967310 for ISUZU FSR 6HE1T Truck Parts The piston is a moving part of the combustion chamber. It is responsible for converting the energy released during the combustion process into mechanical work. The piston also performs a number of other important tasks: It seals the combustion chamber.So the piston take a very important position in the engine.Our company use the best material to produce the piston,our piston is almost no complain among the