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 K 67011 is a protective and sealing component designed for the air receiver assembly of the Sulzer ZV40/48 engine. Its main function is to securely close and protect the air receiver while maintaining system pressure integrity and preventing the ingress of contaminants. Designed to withstand operational pressure, vibration, thermal stresses, and long-term mechanical loading, the cover is manufactured from robust, corrosion-resistant materials suitable for demanding marine and industrial environments. Precision-machined sealing and mounting surfaces ensure a reliable fit and effective airtight performance. The cover also provides convenient access for inspection and maintenance of the air receiver when required, simplifying service procedures without compromising structural integrity. By protecting the intake air system and maintaining stable operating conditions, the K 67011 cover contributes to reliable engine performance, efficient airflow management, and extended service life of the air charging system.

The flange K 67004 is a structural connection component designed to join air branches K 67002 and K 67003 within the Sulzer ZV40/48 air charging system. Its primary purpose is to provide a secure, accurately aligned, and leak-tight connection between adjoining airflow components, ensuring stable pressure conditions and uninterrupted air distribution. Engineered for continuous exposure to vibration, thermal cycling, pressure variations, and mechanical loading, the flange is manufactured from durable, corrosion-resistant materials suitable for heavy-duty diesel engine applications. Precision-machined contact surfaces and dimensional accuracy ensure proper assembly and effective sealing performance. The flange also facilitates maintenance and replacement procedures by providing a reliable mechanical interface between major intake system components. By preserving airflow integrity and structural stability, the K 67004 flange supports efficient turbocharging, optimized combustion, and dependable long-term engine operation.

The air branch K 67003 is a precision-engineered component of the Sulzer ZV40/48 air intake and charging system, designed to direct and distribute compressed intake air to specific engine sections. Its primary function is to ensure a balanced and uninterrupted airflow from the turbocharging and charge air cooling system, supporting efficient combustion and stable engine operation. Manufactured from high-strength, corrosion-resistant materials, the air branch is built to withstand pressure fluctuations, vibration, thermal expansion, and demanding marine or industrial operating conditions. Its optimized internal geometry minimizes airflow resistance and pressure losses while promoting uniform air distribution. Precision-machined connection surfaces provide secure assembly and reliable sealing with adjacent components. By maintaining efficient airflow management, the K 67003 air branch contributes to improved engine performance, fuel efficiency, reduced emissions, and long-term reliability of the air charging system.

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 air branch K 67002 is an important airflow distribution component within the Sulzer ZV40/48 engine intake and charging system. Its function is to channel and distribute compressed intake air from the charge air system toward designated engine sections, supporting balanced air supply and efficient combustion. Designed to operate under elevated pressure, vibration, temperature variation, and continuous airflow, the air branch is manufactured from robust, corrosion-resistant materials capable of withstanding demanding diesel engine operating conditions. Its carefully engineered internal passage geometry minimizes turbulence and pressure losses while promoting smooth airflow. Precision-machined connection surfaces ensure secure integration and reliable sealing with adjacent intake components. By maintaining efficient air distribution and stable intake conditions, the K 67002 air branch contributes to improved engine efficiency, dependable turbocharger performance, and long-term durability of the air charging system.