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.

The locking spring washer, code 515151, is a critical fastening component used in the MAN L21/31 engine to prevent loosening of bolted joints caused by vibration, thermal cycling, and dynamic mechanical stresses. Engineered with elastic spring properties that maintain continuous preload, it helps preserve the integrity and stability of mechanical connections throughout prolonged engine operation. Manufactured from hardened, wear-resistant materials with enhanced corrosion protection, the washer is designed for dependable service in harsh marine and industrial environments. By maintaining secure fastening and reducing the likelihood of connection failure, the locking spring washer contributes to improved operational safety, lower maintenance costs, and extended durability of engine assemblies.

The closing cover, code 100100, is an essential protective and sealing component within the MAN L21/31 engine, designed to securely close access openings and protect internal assemblies from contamination and environmental influences. By preventing the escape of lubricants and the ingress of dirt, moisture, or other harmful particles, it helps maintain the integrity of the engine’s internal systems and supports stable operating conditions. Precision-manufactured for accurate fitment and reliable sealing, the closing cover is produced from durable, corrosion-resistant materials capable of withstanding demanding thermal and mechanical loads. Its contribution to system protection and operational safety makes it an important element for ensuring long service life and reduced maintenance requirements.

The cover with splash tube, code 300100, is a multifunctional assembly within the MAN L21/31 engine that combines protective enclosure with controlled lubrication management. Designed to shield internal engine components from contamination while directing lubricating oil through the integrated splash tube, it ensures effective cooling and lubrication of critical moving parts during operation. Precision-engineered for accurate fitment and dependable sealing, the assembly is manufactured from durable and corrosion-resistant materials capable of withstanding severe thermal and mechanical stresses. By optimizing lubricant distribution and reducing uncontrolled oil dispersion, the cover with splash tube contributes to lower component wear, improved operational reliability, and a longer service life for the engine.

The round seal ring, code 100100, is a precision-engineered circular sealing element developed to ensure leak-tight connections within the MAN L21/31 engine. Its symmetrical design provides uniform contact pressure around the entire sealing surface, helping to maintain reliable sealing performance under varying temperatures and pressure conditions. Commonly used in fluid and lubrication systems, the round seal ring prevents the loss of operating media and protects internal components from contamination. Manufactured from high-quality materials selected for their resistance to wear, heat, and chemical exposure, this component plays an important role in maintaining operational stability, system reliability, and long-term engine durability.

The seal ring, code 136973, is a vital sealing component used in the MAN L21/31 engine to prevent leakage and maintain controlled pressure conditions within mechanical and hydraulic systems. Installed at critical sealing interfaces, it forms a dependable barrier against the escape of oil, fuel, coolant, or air while protecting the engine from the ingress of contaminants. Designed to accommodate thermal expansion, vibration, and operational movement, the seal ring helps preserve system integrity even under demanding marine and industrial operating conditions. Manufactured from durable, wear-resistant, and chemically resistant materials, it contributes to improved engine efficiency, reduced maintenance requirements, and extended service life of essential engine assemblies.

The locking spring washer, code 515151, is a critical fastening component used in the MAN L21/31 engine to prevent loosening of bolted connections caused by vibration, thermal cycling, and dynamic mechanical loads. Designed with spring characteristics that maintain continuous preload in the joint, it enhances the security and stability of assembled components during prolonged engine operation. Manufactured from hardened, wear-resistant materials and protected against corrosion, the washer delivers dependable performance in severe marine and industrial environments. By maintaining fastening integrity and reducing the risk of connection failure, the locking spring washer contributes to operational safety, lower maintenance requirements, and the long-term durability of engine assemblies.

The guide pipe, code 200100, is an important directional component within the MAN L21/31 engine, designed to guide the movement of fluids, mechanical elements, or maintenance tools with precision and stability. Engineered for accurate alignment and smooth passage, it supports proper positioning and reliable operation of associated systems even under challenging operating conditions. Manufactured from durable, corrosion-resistant materials and produced to strict dimensional tolerances, the guide pipe maintains its structural integrity under vibration, temperature fluctuations, and continuous service. Its role in ensuring controlled guidance and minimizing operational deviations contributes significantly to engine reliability, maintenance efficiency, and long-term performance.

The spray nozzle, code 100100, is a precision-engineered component used in the MAN L21/31 engine to deliver fluids in a controlled and efficient spray pattern. Commonly applied in lubrication, cooling, or cleaning systems, it ensures accurate atomization and distribution of oil, fuel, or water to critical engine areas. Designed for consistent flow performance under varying pressures and temperatures, the spray nozzle contributes to optimal thermal management and component protection. Manufactured from wear- and corrosion-resistant materials, it provides reliable long-term operation in demanding marine and industrial environments. By ensuring precise fluid delivery, the spray nozzle plays an important role in improving engine efficiency, reducing wear, and enhancing overall operational reliability.

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