Piston Pin Plug

A piston pin plug, also known as a wrist pin plug, is a small cylindrical component used in internal combustion engines. It is typically made of metal, such as steel or aluminum, and is used to secure the piston pin (also known as the wrist pin) in place within the piston.

The piston pin plug is inserted into the small end of the connecting rod, which is attached to the piston. It acts as a retaining device, preventing the piston pin from moving or coming loose during engine operation. The piston pin plug is usually press-fit into the connecting rod, ensuring a secure and stable connection.

The piston pin itself is a cylindrical rod that connects the piston to the connecting rod. It allows the piston to pivot and move back and forth within the cylinder bore, transferring the force generated by the combustion process to the connecting rod and ultimately to the crankshaft.

Overall, the piston pin plug plays a crucial role in maintaining the integrity and stability of the piston assembly within the engine. It ensures that the piston pin remains securely in place, allowing for smooth and efficient engine operation.