The adjustment screw H 27217 is a precision control component used in the valve train system of the Sulzer ASL25 engine, enabling accurate setting of valve clearance and timing parameters. Designed to maintain stable positioning under vibration, thermal expansion, and continuous mechanical load, this screw ensures consistent engine performance and protects critical valve components from premature wear. Manufactured from high-strength material with precise threading, H 27217 provides reliable adjustment, long-term dimensional stability, and contributes directly to efficient combustion and smooth engine operation.