The disc, code 06.15010-2211.0, is a multifunctional precision component used in various assemblies of the MAN L21/31 engine where accurate force distribution, spacing, or flow control is required. Produced to strict flatness and dimensional tolerances, it ensures uniform load transfer and reliable positioning of adjacent parts under dynamic operating conditions. Its robust material properties provide excellent resistance to mechanical stress, temperature variation, and wear, making it suitable for long-term service in demanding environments. Whether acting as a thrust element, spacer, or functional interface, this disc contributes to stable operation, reduced vibration, and extended service life of the engine’s critical systems.

The guide pipe, code 11.01132-0031.A, plays an essential role in directing and stabilizing the movement of fluids or functional elements within the MAN L21/31 engine. Designed with exact dimensional accuracy and optimized internal geometry, it ensures correct alignment, smooth flow characteristics, and reduced mechanical stress on connected components. Manufactured from high-quality, temperature- and corrosion-resistant materials, it maintains structural stability and consistent performance over long operating periods. By preventing misalignment, turbulence, and uneven load distribution, the guide pipe supports efficient system operation, minimizes wear, and enhances the overall durability and safety of the engine.

The compression fitting, code 06.71010-0308.0, is a precision-engineered connection element designed to ensure safe and leak-free joining of pipelines within the MAN L21/31 engine systems. By creating a strong mechanical grip and a reliable metal-to-metal seal, it enables secure transmission of fuel, lubricating oil, air, or cooling media even under high pressure, temperature fluctuations, and continuous vibration. Its carefully machined sealing surfaces and high-strength material guarantee long service life, easy assembly, and repeatable performance during maintenance operations. As a key component in auxiliary and control circuits, the compression fitting contributes to operational safety, system efficiency, and the overall reliability of marine and power-generation installations.

The A fake shell H 51303 is a specialized structural and spacing component used in the Sulzer ASL25 engine to ensure correct positioning and load distribution within selected assemblies. Designed for dimensional accuracy and mechanical stability, it serves as a compensating or supporting element that maintains proper alignment and protects adjacent working parts from uneven stress. Its robust construction and precise fit help reduce wear, improve assembly reliability, and support consistent operational performance. Although not directly involved in power generation, this component plays a significant role in preserving the structural integrity and service life of the engine.

The bolt H 45376 is a high-integrity fastening element used to secure heavily loaded structural and mechanical joints within the Sulzer ASL25 engine. Engineered to withstand cyclic forces, thermal expansion, and persistent vibration, it provides consistent clamping force and accurate load distribution across connected components. Its precision threading and controlled material properties ensure reliable preload retention, resistance to fatigue, and long service life. This bolt is fundamental for maintaining assembly integrity and supporting safe, uninterrupted engine operation in demanding marine and industrial environments.

The developed axle segment H 42051 for the left-hand motor configuration is a precision-engineered structural component within the Sulzer ASL25 drive system, designed to ensure accurate torque transmission and stable mechanical alignment. Manufactured from high-strength material and machined to tight tolerances, this axle segment operates reliably under continuous rotational load, vibration, and thermal influence. Its optimized geometry supports smooth power flow, minimizes mechanical stress on adjacent components, and contributes to balanced drivetrain performance. As a key element in the rotating assembly, it plays an essential role in long-term durability, operational stability, and efficient energy transfer.

The guide pipe, code 11.01132-0022-1.C, is a precisely engineered component designed to direct and stabilize the flow of fluids or the movement of functional elements within the MAN L21/31 engine. Its accurate geometry ensures proper alignment, controlled flow characteristics, and reduced mechanical stress on connected parts. Manufactured from high-quality materials with excellent resistance to temperature and corrosion, it guarantees dimensional stability and long operational life. By maintaining defined guidance and preventing misalignment or turbulence, the guide pipe supports efficient system performance, minimizes wear, and contributes to the overall reliability and operational safety of the engine.

Plug screws, code EN47R21, are robust closing and securing elements used to seal auxiliary drillings, inspection points, and service channels within the MAN L21/31 engine. Produced from high-strength alloy steel and machined to exact thread tolerances, they ensure pressure-tight closure and reliable mechanical strength even under severe vibration and thermal cycling. Their design allows easy removal for inspection and maintenance while guaranteeing safe re-sealing during reassembly. With corrosion-resistant surface protection and precise seating geometry, plug screws contribute to the integrity of the engine structure, prevent medium leakage, and enable controlled and efficient servicing procedures.

The seal ring, code 06.56190-0716-1.0, is a vital element for maintaining tight and reliable sealing within the MAN L21/31 engine, ensuring that lubricating oil, cooling water, or air systems remain completely leak-free under varying pressure and temperature conditions. Manufactured from carefully selected materials with high resistance to wear, thermal aging, and chemical exposure, it provides long-term elasticity and consistent sealing performance. By preventing fluid loss and the ingress of contaminants, the seal ring protects adjacent components, preserves system efficiency, and supports stable engine operation. Its precision dimensions enable quick installation and dependable service life, making it an essential part for safe and economical engine performance in marine and power-generation applications.

The bolt H 45371 is a safety-relevant structural fastener used in the Sulzer ASL25 engine to join and secure major components subjected to high mechanical stress. Manufactured from high-grade material and designed with precise dimensional tolerances, it ensures accurate load distribution and reliable clamping under cyclic forces and thermal expansion. Its durability and resistance to fatigue are essential for maintaining assembly integrity, minimizing the risk of loosening, and supporting long-term, trouble-free engine operation in demanding marine and industrial applications.