“Piston Pin Retainer – HCC3901706.” Product names and specifications can vary across manufacturers and industries. In general, a piston pin retainer is a component that holds the piston pin (or wrist pin) in place within the piston. The piston pin is the pivot point that connects the piston to the connecting rod. The retainer ensures that the piston pin remains securely in place during the engine’s operation.

Specifications: