Rocker Arm BM150 - Aldrich Motor Rocker Arm BM150 High-Quality Component for Engine Performance The Rocker Arm BM150 is a critical oscillating lever designed to precisely transfer radial motion from the camshaft's rotating lobe into linear motion at the poppet valve, ensuring its accurate opening. One end of the rocker arm is actuated by the camshaft lobe, while the other end applies pressure to the valve stem. This mechanism is essential for efficient engine operation and