1. The piston is attached to the connecting rod by the piston pin (wrist pin).
2. The pin passes through the piston pin bosses and through the upper end of the connecting rod, which rides within the piston on the middle of the pin.
3. Piston pins are made of alloy steel with a precision finish and are case hardened. Their tubular construction gives them maximum strength with minimum weight.
We can produce any sizes and styles as your requests, welcome OEM & ODM.