The Sulzer 12ZV40/48 engine, widely used in marine and power generation applications, relies on critical components for efficient operation. Among these, the valve guide K 27112, equipped with the O-ring K 27113, ensures proper alignment and sealing of the valve stem, preventing gas leakage and maintaining optimal engine performance. Additionally, the valve seat K 27108, paired with the same O-ring K 27112, provides a durable and precise seating surface for the valve, contributing to the overall efficiency and longevity of the engine. These components are vital for maintaining the integrity and functionality of the Sulzer 12ZV40/48, emphasizing the importance of regular maintenance and quality replacements.