QC002165
Outer Valve Spring
Mitsubishi FUSO®

The Outer Valve Spring, also known as QC002165, is an essential part of a commercial truck's engine. This spring is responsible for ensuring that the valves in the engine open and close at the correct time. The Outer Valve Spring works in conjunction with the Inner Valve Spring to provide the necessary force to keep the valves closed when the camshaft is not pushing on them. When the camshaft rotates and pushes on the valve, the Outer Valve Spring compresses and allows the valve to open. Without the Outer Valve Spring, the engine's valves would not function properly, leading to a loss of power and potentially catastrophic engine failure. It is important to ensure that the Outer Valve Spring is in good condition and replaced as needed to maintain the proper functioning of the engine. If you notice any issues with your engine's performance, it is recommended to have a professional mechanic inspect the Outer Valve Spring and other engine components to ensure they are functioning properly.