The main rocker rack H 27031 is a robust structural component forming the central support and alignment base for the main rocker arms within the Sulzer ASL25 valve train system. Designed to withstand high cyclic loads, vibration, and thermal influence, it ensures precise positioning and synchronized movement of the rocker mechanism. Its rigid construction and accurately machined mounting surfaces minimize deflection and wear, enabling reliable valve timing, smooth power transmission, and reduced mechanical stress. As a key load-bearing element, the main rocker rack plays a vital role in the durability, efficiency, and long-term stability of the engine’s valve actuation system.