The pipe clamp, code 06.66012-1101.0, is an important support component in the MAN L21/31 engine, used to securely fasten pipes and hoses to the engine structure. It prevents unwanted movement, vibration, and mechanical stress on fluid lines, reducing the risk of fatigue or leakage. Designed for durability and precise fit, the pipe clamp supports safe routing of oil, fuel, and cooling lines, contributing to orderly installation, easier maintenance, and dependable engine operation in harsh marine and industrial environments.

The round seal ring, code 06.56933-2418.0, is a critical sealing element in the MAN L21/31 engine, used to prevent leakage at static or dynamic joints within oil, fuel, or cooling circuits. Manufactured from durable, heat- and pressure-resistant materials, it ensures reliable sealing even under demanding operating conditions. By maintaining tight connections and preventing contamination or fluid loss, this seal ring contributes directly to engine cleanliness, efficiency, and long-term reliability.

The plug screw, code 06.08045-0144.0, is a precision sealing fastener used in the MAN L21/31 engine to close threaded ports in lubrication, cooling, or fuel systems. Designed to withstand pressure, temperature fluctuations, and vibration, this component ensures leak-free sealing of inspection openings or fluid channels. Its robust material quality and accurate thread geometry are essential for maintaining system integrity and preventing fluid loss during continuous marine or stationary engine operation.

Round steel bars, code EN43AE00350145, are high-grade raw materials used in the manufacture and refurbishment of various MAN L21/31 engine components. Produced from EN43AE alloy steel, these bars offer excellent strength, toughness, and machinability, making them suitable for precision parts such as shafts, pins, and structural elements. Their consistent mechanical properties and dimensional accuracy ensure that finished components meet strict engine specifications, supporting reliable performance in marine and industrial diesel engine applications.

The connecting rod bearing, code P50604-04, is an essential load-bearing component in the MAN L21/31 engine, enabling smooth rotation between the connecting rod and the crankshaft. Engineered to handle high dynamic loads and continuous lubrication, this precision bearing minimizes friction and absorbs operating stresses during each combustion cycle. Its accurate fit and advanced bearing materials protect critical rotating components, contributing to stable engine operation, reduced wear, and long-term durability under heavy-duty operating conditions.

The cylinder liner, code P50610-12, is a critical wear component in the MAN L21/31 engine, forming the inner running surface of the cylinder where the piston operates. Designed to withstand high combustion pressures, temperatures, and continuous friction, the liner ensures optimal sealing, controlled oil consumption, and efficient heat transfer to the cooling system. Manufactured from high-quality, wear-resistant materials with precision machining, the cylinder liner plays a key role in maintaining engine efficiency, reliability, and extended service life in demanding marine and power generation applications.

Big-end bearings, code 50601, are essential load-bearing components connecting the connecting rod to the crankshaft in the MAN L21/31 engine. These precision bearings are designed to withstand high dynamic loads, rotational speeds, and continuous lubrication demands while ensuring smooth crankshaft motion. Their accurate fit and advanced bearing materials reduce friction and wear, protect the crankshaft journals, and play a key role in maintaining engine reliability, efficiency, and long service life under heavy-duty marine and stationary operating conditions.

The exhaust valves, code 50502, play a vital role in controlling the discharge of exhaust gases from the MAN L21/31 engine’s combustion chamber. Operating under extreme temperatures and corrosive conditions, these valves are engineered from high-temperature alloys to ensure durability, tight sealing, and resistance to thermal fatigue. Proper exhaust valve function is essential for maintaining engine efficiency, protecting downstream components such as turbochargers, and ensuring compliance with emission and reliability requirements in continuous-duty operation.

The inlet valve seat, code 50501, is a critical combustion chamber component in the MAN L21/31 engine, providing a precise sealing surface for the inlet valve. Designed to withstand repeated thermal cycling and mechanical loading, the valve seat ensures reliable air admission into the cylinder while maintaining optimal compression integrity. Manufactured from wear- and heat-resistant materials, it minimizes erosion and deformation, contributing to stable engine performance, efficient combustion, and extended service intervals in demanding marine and power generation applications.

The hand tools set, code P52004-02, includes high-quality manual tools designed for everyday mechanical work on the MAN L21/31 engine. Comprising items such as spanners, wrenches, screwdrivers, and auxiliary tools, this set supports safe and precise handling of fasteners and components during maintenance and repair. Built for durability and ergonomic use in demanding environments, these hand tools are indispensable for efficient onboard servicing and workshop operations, ensuring consistent workmanship and reduced wear on engine parts.