This connecting rod transmits linear piston motion to the crankshaft, converting combustion pressure into rotational torque. It is a component within the engine assembly, linking the piston pin to the crank journal. Fatigue cracking or bearing-spin failure at the big-end bore can cause a knocking sound and eventual engine seizure. This part is manufactured to the original geometry and material specification, matching the factory rod's weight and balance so that no additional mass-matching is required during a rebuild. On installation, verify the rod bolt stretch or torque angle per the engine service manual and replace the big-end bearing shells.