The spring plate, with code number H 27215, plays a crucial role in the valve mechanism of the ASL25 engine by providing a stable and balanced surface to support the valve spring. Designed to maintain the spring’s position under high pressure and vibration, the plate ensures consistent tension and contributes to the overall timing and responsiveness of the valve system. Its sturdy construction and precision fitting help prevent misalignment or fatigue, making it an essential component for reliable engine performance and durability during continuous heavy-duty operation.