21081489
Rocker Arm
Mack

This rocker arm is a vital component of the engine’s valve train, translating camshaft motion into valve operation. Its robust construction ensures precise movement and durability under high-stress conditions. Proper functioning of the rocker arm is essential for maintaining optimal engine timing, power output, and fuel efficiency. It also helps prevent valve damage and misfires, contributing to overall engine reliability. Easy to install and replace, this part supports routine maintenance and engine rebuilds. Source One Parts Center provides this component as a trusted part for sustaining engine performance in heavy-duty trucks.