The cover with splash tube, code 11.01213-0057-1.0, is an integrated lubrication management component in the MAN L21/31 engine. Designed to control and direct the flow of lubricating oil inside the engine frame, the splash tube ensures targeted distribution to critical components such as bearings and gear assemblies. By preventing uncontrolled oil dispersion and reducing aeration, it enhances lubrication efficiency and minimizes wear. This component plays a vital role in maintaining oil cleanliness, reducing friction losses, and supporting reliable engine performance under continuous high-load marine and power generation conditions.

The protecting cap, code 11.01251-0048.0, serves as a protective barrier within the MAN L21/31 engine assembly, shielding sensitive components from contamination, moisture, and mechanical damage. Typically installed over exposed interfaces or fastening points, it helps preserve internal cleanliness and prevent corrosion. Manufactured from durable materials suited for harsh operational environments, the protecting cap contributes to extended service intervals and reduced maintenance needs. Its function may appear simple, but it is essential for maintaining the engine’s structural and operational integrity over time.

The round seal ring, code 06.56936-1507.A, is a precision sealing element used in various fluid systems of the MAN L21/31 engine, including lubrication, cooling, and fuel circuits. Designed to withstand pressure fluctuations, thermal expansion, and vibration, it ensures leak-free connections between mating components. Its resilient material composition provides consistent elasticity and long-term durability, even under demanding marine and industrial operating conditions. Though compact in size, this seal ring plays a decisive role in maintaining system integrity, preventing fluid loss, and safeguarding overall engine reliability.

The auxiliary rocker stand H 27035 is a structural support component within the Sulzer ASL25 valve train assembly, designed to securely position and stabilize auxiliary rocker mechanisms. Built to withstand repetitive mechanical loading, vibration, and thermal influences, this stand ensures correct alignment and smooth operation of the rocker system. Its rigid construction and precise mounting surfaces minimize deflection and wear, contributing to accurate valve actuation, reduced mechanical stress, and long-term durability of the engine’s valve train system.

The referral valve H 27440 “NOVA” is a specialized control component integrated into the Sulzer ASL25 engine’s fluid management system, designed to regulate or redirect flow within designated circuits. Engineered for accurate response, pressure stability, and durability under continuous operational stress, this valve ensures controlled system behavior and reliable protection of downstream components. Its robust construction and precise internal geometry support consistent performance, reduced leakage, and efficient flow regulation, contributing to overall engine reliability and operational safety.

The nut H 27218 is a high-strength fastening component used in critical assemblies of the Sulzer ASL25 engine where secure clamping and long-term stability are essential. Designed to maintain consistent preload under vibration, thermal expansion, and dynamic mechanical loads, this nut ensures reliable retention of associated components. Its precision-machined threads and controlled material properties provide resistance to loosening and fatigue, safeguarding the structural integrity of the assembly. Though compact in size, the H 27218 nut plays a vital role in maintaining dependable engine performance in demanding marine and industrial environments.

The round seal ring, code 06.56936-1507.A, serves as a dependable sealing element within various systems of the MAN L21/31 engine. Engineered to withstand high pressure and thermal cycling, it ensures tight sealing between components in lubrication, cooling, or fuel circuits. Its circular geometry allows uniform load distribution, reducing the risk of deformation or leakage. Despite its modest size, this seal ring plays an indispensable role in maintaining engine cleanliness, operational efficiency, and long service life in both marine propulsion and stationary power generation applications.

The seal ring M20x26, code 06.56190-0715-1.0, is a critical sealing component used in fluid systems of the MAN L21/31 engine. Designed to provide leak-tight connections at threaded or bolted interfaces, it prevents the escape of lubricating oil, cooling water, or fuel under pressure. Its precisely defined dimensions ensure optimal compression and sealing efficiency, while its material composition resists temperature fluctuations, chemical exposure, and mechanical stress. Reliable sealing is essential for maintaining system pressure, preventing contamination, and ensuring efficient and safe engine operation.

The cylindrical pin, code 06.22020-1214.0, is a precision alignment and positioning element used throughout the MAN L21/31 engine assembly. Designed to ensure exact component placement, it maintains structural alignment between mating parts such as bearing caps, housings, and structural casings. Manufactured from hardened steel to withstand shear forces and vibration, this pin plays a crucial role in maintaining dimensional accuracy and long-term mechanical stability. Though compact in size, it is fundamental to ensuring repeatable assembly quality and reliable engine performance under demanding marine and industrial operating conditions.

The component H 40021 is a precision-manufactured element used within the Sulzer ASL25 engine’s mechanical system, designed to ensure stable interaction between associated assemblies under continuous operational load. Engineered for durability, dimensional accuracy, and resistance to vibration, this part supports reliable system performance and contributes to overall mechanical stability. Its robust construction and accurate fit help reduce wear, maintain correct alignment, and enhance long-term engine reliability in heavy-duty marine and industrial environments.