The ball bearing, code 178920, is a fundamental mechanical component designed to support rotating shafts and reduce friction within the MAN L21/31 engine. By enabling smooth rotational motion and minimizing energy losses, it enhances mechanical efficiency and operational stability across various engine subsystems. Manufactured with high precision from hardened, wear-resistant materials, the bearing is capable of withstanding significant radial and axial loads, as well as continuous vibration and temperature fluctuations. Its reliable performance ensures long service life, reduces maintenance needs, and plays a vital role in maintaining the smooth, efficient, and dependable operation of the engine.

The thrust piece, code 300100, is a precision component designed to absorb axial forces and maintain proper alignment of rotating or moving parts within the MAN L21/31 engine. By distributing loads evenly and reducing localized stress, it helps prevent excessive wear and ensures stable operation under varying mechanical and thermal conditions. Engineered from high-strength, wear-resistant materials and manufactured to tight tolerances, the thrust piece delivers consistent performance over extended service intervals. Its critical role in controlling axial movement supports the protection of key assemblies, preserves dimensional accuracy, and contributes to the overall durability and efficiency of the engine.

The mounting tool for valves, code 212840, is a specialized service device designed to ensure safe, accurate, and efficient installation and removal of valve components in the MAN L21/31 engine. Engineered to provide controlled force application and precise alignment, it minimizes the risk of damage to valve seats, springs, and associated parts during maintenance operations. Its ergonomic design and robust construction enable technicians to perform work quickly and reliably, even under demanding workshop or on-site conditions. Manufactured from high-strength materials and built to meet strict service requirements, this tool enhances maintenance quality, reduces downtime, and contributes to the long-term reliability and performance of the engine.

The auxiliary rocker arm K 28015 is a complete assembly designed to support and complement the main valve actuation system in the Sulzer ZV40/48 engine. It assists in distributing motion and forces within the valve train, ensuring balanced operation and precise control of valve movement under varying engine loads. Engineered for continuous operation under mechanical stress, vibration, and thermal influence, this component is manufactured from robust, wear-resistant materials and assembled to strict tolerances. Its integrated design ensures reliable performance and simplifies installation and maintenance. By supporting synchronized valve actuation and reducing localized stress, the K 28015 auxiliary rocker arm enhances the overall efficiency, durability, and operational stability of the engine.

The main rocker arm K 28006 is a fundamental component of the valve actuation mechanism in the Sulzer ZV40/48 engine, responsible for transmitting motion from the camshaft to the engine valves with precision and reliability. Designed to operate under high cyclic loads, dynamic stresses, and continuous mechanical movement, it ensures accurate valve timing and efficient gas exchange within the combustion process. Manufactured from high-strength materials and precisely machined for optimal geometry, the rocker arm provides excellent durability, wear resistance, and dimensional stability. By enabling consistent valve operation and minimizing mechanical losses, the K 28006 main rocker arm plays a key role in maintaining engine performance, fuel efficiency, and long-term reliability.

The joint ring K 27762 is a precision sealing component designed for use with the transition nipple K 27755 in the Sulzer ZV40/48 engine, ensuring secure and leak-free connections within critical fluid or pressure systems. Positioned between mating surfaces, it compensates for minor surface irregularities and maintains uniform contact pressure under varying operating conditions. Engineered to withstand exposure to pressure fluctuations, temperature changes, and mechanical vibration, this joint ring delivers consistent sealing performance over extended service intervals. Manufactured from high-quality, application-specific materials, it offers excellent resistance to wear and chemical degradation. By preserving system integrity and preventing fluid losses, the K 27762 joint ring contributes to operational efficiency, reliability, and reduced maintenance requirements.

The name plate, code 178954, is an identification component that provides essential technical and traceability information for the MAN L21/31 engine. Typically displaying details such as model designation, serial number, manufacturing data, and regulatory markings, it enables accurate identification throughout the engine’s lifecycle. Designed for durability and resistance to environmental influences such as heat, moisture, and mechanical wear, the name plate ensures long-term legibility even in harsh operating conditions. By supporting documentation, maintenance tracking, and compliance requirements, it plays an important role in asset management, operational transparency, and reliable service support.

The lifting tool, code 378937, is a purpose-built handling device designed for the safe lifting, positioning, and transportation of heavy engine components during maintenance and overhaul of the MAN L21/31. Developed with a focus on safety, load balance, and ease of operation, it enables controlled handling of parts such as cylinder heads, pistons, or auxiliary modules, reducing the risk of damage and workplace accidents. Manufactured from high-strength materials and compliant with relevant safety standards, it ensures dependable performance even in demanding workshop or on-site conditions. By improving handling efficiency and safety, the lifting tool contributes significantly to maintenance productivity and equipment protection.

The thrust piece, code 300100, is a precision component designed to absorb axial forces and maintain proper alignment of rotating or moving parts within the MAN L21/31 engine. By distributing loads evenly and reducing localized stress, it helps prevent excessive wear and ensures stable operation under varying mechanical and thermal conditions. Engineered from high-strength, wear-resistant materials and manufactured to tight tolerances, the thrust piece provides reliable performance over long service intervals. Its role in controlling axial movement is essential for protecting critical assemblies, preserving dimensional accuracy, and supporting the overall durability and efficiency of the engine.

The nipple K 27754 is a precision connection component used in the Sulzer ZV40/48 engine to interface with the indicator valve, enabling accurate measurement and monitoring of cylinder pressure. Designed to provide a secure and leak-free connection between the valve and measurement instrumentation, it ensures reliable data acquisition during engine operation and diagnostics. Manufactured from durable, corrosion-resistant materials, this nipple withstands high pressure, temperature fluctuations, and mechanical stresses typical of engine environments. Its precise geometry and machining guarantee compatibility and tight sealing. By supporting accurate pressure indication and safe system integration, the K 27754 nipple contributes to effective engine monitoring, maintenance planning, and performance optimization.