The disc, code 100100, is a versatile precision component used within various mechanical and fluid-handling systems of the MAN L21/31 engine. Depending on the application, the disc may function as a support element, spacer, sealing surface, or flow-control component within rotating or stationary assemblies. Designed for dimensional accuracy and long-lasting durability, it is manufactured from wear-resistant materials capable of withstanding pressure, vibration, and thermal stresses under demanding operating conditions. Its reliable performance helps maintain system stability, supports efficient engine operation, and contributes to the overall reliability and service life of critical engine components.

The nut, code 199924, is a precision fastening component used in the MAN L21/31 engine to provide secure and reliable mechanical connections in conjunction with bolts, studs, or tie rods. Designed for applications involving high preload and demanding operating conditions, the nut ensures stable clamping forces while resisting loosening caused by vibration and thermal cycling. Manufactured from high-strength materials and produced according to strict dimensional standards, it offers dependable performance in harsh marine and industrial environments. Its role in maintaining fastening integrity and structural stability makes the nut an indispensable element for safe operation and extended service life of engine assemblies.

The tierod, code 102766, is a critical structural component within the MAN L21/31 engine, designed to maintain the integrity and rigidity of major engine assemblies under high mechanical and thermal loads. Acting as a high-strength tension member, the tierod securely clamps key components together and ensures proper alignment during continuous operation. Manufactured from premium alloy steel and engineered to withstand cyclic stresses, vibration, and elevated temperatures, it plays an essential role in preserving engine geometry and preventing structural deformation. By maintaining uniform preload and assembly stability, the tierod contributes significantly to operational reliability, reduced wear, and the long-term durability of the engine.

The spray nozzle, code 302759, is a precision-engineered fluid distribution component designed to deliver lubricants or other operating media in a controlled spray pattern within the MAN L21/31 engine. Used in lubrication, cooling, or cleaning applications, it provides accurate atomization and efficient delivery of oil, fuel, or water to critical engine components. Manufactured to strict dimensional tolerances and optimized for stable flow characteristics, the spray nozzle performs reliably under varying pressures, temperatures, and engine loads. Constructed from wear- and corrosion-resistant materials, it contributes to improved thermal management, reduced component wear, and enhanced overall efficiency and durability of the engine systems.

The cover, code 100100, is a versatile protective component within the MAN L21/31 engine, designed to enclose and safeguard internal systems from contamination, mechanical damage, and environmental influences. Depending on its installation location, the cover may protect lubrication systems, inspection openings, or mechanical assemblies while also supporting effective sealing and operational safety. Precision-manufactured for accurate fitment, it is produced from durable and corrosion-resistant materials capable of withstanding vibration, temperature fluctuations, and demanding operating conditions. By preserving the cleanliness and integrity of vital engine sections, the cover plays an important role in maintaining reliability, simplifying maintenance procedures, and extending the operational life of the engine.

The locking spring washer, code 515151, is a critical fastening component used in the MAN L21/31 engine to prevent the loosening of bolted joints caused by vibration, thermal cycling, and dynamic mechanical loads. Designed with elastic spring characteristics that maintain continuous preload, it helps preserve the strength and stability of mechanical connections during long periods of engine operation. Manufactured from hardened, wear-resistant materials and protected against corrosion, the locking spring washer delivers dependable performance in demanding marine and industrial environments. By ensuring fastening integrity and reducing the risk of connection failure, this component contributes to improved operational safety, lower maintenance costs, and extended service life of engine assemblies.

The O-ring, code 106977, is a precision sealing element used in the MAN L21/31 engine to prevent leakage between stationary or moving components operating under pressure. Its circular elastic design allows it to create a highly effective seal by adapting to dimensional variations caused by temperature changes, vibration, and mechanical loading. Commonly installed in lubrication, cooling, fuel, and hydraulic systems, the O-ring helps maintain system tightness while protecting internal engine components from contamination. Manufactured from high-quality elastomer materials with excellent resistance to heat, wear, and chemical exposure, the O-ring contributes to improved operational reliability, reduced maintenance intervals, and extended service life of the engin

The oval flange, code 170901, is a precision-engineered connection component developed for the MAN L21/31 engine to establish strong and pressure-resistant joints between piping systems, hoses, and mechanical interfaces. Its oval geometry allows efficient installation in confined engine spaces while ensuring balanced load distribution and dependable sealing performance. Manufactured from robust and corrosion-resistant materials, the flange is designed to withstand vibration, thermal expansion, and demanding marine and industrial operating conditions. By providing stable and leak-tight connections, the oval flange supports safe fluid transfer, minimizes operational risks, and contributes to the overall reliability and long-term durability of the engine systems.

The gasket, code 100100, is a fundamental sealing component within the MAN L21/31 engine, designed to create secure and leak-tight joints between mating surfaces exposed to pressure, temperature fluctuations, and demanding operating conditions. By compensating for minor surface irregularities, the gasket prevents the leakage of oil, fuel, coolant, or gases while maintaining the integrity of critical engine systems. Manufactured from carefully selected heat-resistant and chemically resistant materials, it delivers reliable sealing performance and a long operational life even in severe marine and industrial environments. Its role in preserving system efficiency and reducing maintenance requirements makes the gasket an essential element for safe and dependable engine operation.

The oval flange, code 170901, is a precision-engineered connection component developed for the MAN L21/31 engine to create strong and pressure-resistant joints between pipelines, hoses, and mechanical interfaces. Its oval design allows efficient installation in confined engine spaces while ensuring balanced load distribution and reliable sealing performance. Manufactured from robust, corrosion-resistant materials, the flange is capable of withstanding vibration, thermal expansion, and exposure to demanding marine and industrial operating conditions. By providing stable and leak-tight connections, the oval flange supports safe fluid transfer, minimizes operational risks, and enhances the overall reliability and longevity of the engine systems.