ME017169
Outer Valve Spring
Mitsubishi FUSO®

The Outer Valve Spring (part number ME017169) is a component found in the engine of a truck. It is responsible for providing tension to the valves, ensuring that they close properly during operation. This spring sits on top of the valve stem and is held in place by the valve retainer. As the camshaft rotates, it pushes down on the lifter, which in turn pushes down on the pushrod. This force is then transferred to the rocker arm, which opens the valve against the tension of the outer valve spring. When the camshaft lobe moves away from the lifter, the tension of the outer valve spring forces the valve to close again. The outer valve spring is an essential part of a truck's engine, ensuring proper operation and preventing damage to other engine components.