Shaft rocker lever
A shaft rocker lever is an integral part of a vehicle's valve train system, which is responsible for controlling the operation of the engine’s intake and exhaust valves. The rocker lever (or rocker arm) is part of a mechanism that converts the camshaft's rotary motion into linear motion to open and close the valves at the correct times during the engine cycle. The shaft rocker lever typically refers to a rocker arm that is mounted on a shaft, which helps ensure precise control and operation in the engine.