153-5540: 21mm Diameter Piston Pin

A Piston Pin, also known as a wrist pin or gudgeon pin, is a vital part used in internal combustion engines to connect the piston and connecting rod. It acts as a pivot point, allowing the piston to move up and down within the cylinder bore while maintaining a connection with the connecting rod. Attributes: • Minimize friction and wear between the piston • Ensures efficient power transfer without excessive energy loss • Hardened to Rockwell C scale hardness of 58~65HRC, which determines it's resistant to deformation and wear Applications: A Piston Pin is used to allow the reciprocating motion of the piston to transfer power.