The cylinder cover bolt with code H 11113 is a fundamental fastener in the ASL25 diesel engine, responsible for securely fastening the cylinder head to the engine block. Operating under extreme pressure and thermal conditions, this bolt must provide a reliable and durable seal to maintain compression and prevent leaks. Precision-engineered and made of high-strength material, it is designed to resist stretching and fatigue over prolonged engine use. Regular inspection and proper torque application are vital to ensure the engine’s operational integrity and performance.