466GC420X
Engine Rocker Arm Shaft
Mack

The engine rocker arm shaft is a critical component in the valve train, responsible for supporting and actuating the rocker arms that open and close the engine valves. Its precise design ensures smooth transfer of motion from the camshaft to the valves, optimizing engine performance and efficiency. Made from durable materials, this shaft withstands the stresses of high RPM and thermal expansion, maintaining proper alignment and function over time. Proper operation of the rocker arm shaft directly impacts engine power output, fuel economy, and emissions. Its structural integrity helps prevent engine misfires and mechanical failures, contributing to overall engine longevity. Source One Parts Center offers this high-quality shaft to ensure your engine runs reliably under heavy-duty conditions.