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 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.

The nut H 27222 is a high-strength fastening component developed for bolted joints in the Sulzer ASL25 engine that are exposed to dynamic loading and temperature variation. Engineered to maintain consistent preload and resist loosening under vibration, this nut ensures secure retention of critical assemblies and stable mechanical alignment. With precision-formed threads and controlled material properties, it provides dependable clamping force, extended service life, and a key contribution to the overall structural reliability of the engine.

The plug H 27058 is a precision-machined closing element used in the Sulzer ASL25 engine to securely seal auxiliary openings in housings, channels, or fluid passages. Designed to withstand internal pressure, thermal cycling, and continuous vibration, it ensures a leak-free barrier that protects the internal systems from contamination and fluid loss. Its robust construction and accurate threading enable reliable installation and long-term sealing performance, contributing to system integrity, operational safety, and simplified maintenance procedures.

The O-ring H 21434 is a high-performance elastomeric sealing element used to achieve leak-free operation in pressure and fluid connections within the Sulzer ASL25 engine. Designed to retain its shape and elasticity under thermal cycling, vibration, and exposure to oil and fuel, it ensures a secure and flexible sealing interface between mating components. Despite its compact dimensions, this O-ring plays a vital role in preserving system pressure, preventing fluid loss, and protecting internal parts from contamination. Its durability and reliable sealing characteristics contribute significantly to stable engine performance and extended service life.

The seal H 16552 is a critical protective component designed to provide reliable sealing in selected interfaces of the Sulzer ASL25 engine where fluid retention and contamination control are essential. Engineered for resistance to oil, temperature fluctuations, and continuous mechanical stress, it maintains elasticity and sealing integrity throughout extended operating periods. By minimizing leakage and safeguarding adjacent assemblies from external impurities, the H 16552 seal contributes directly to reduced maintenance requirements, improved system cleanliness, and the long-term reliability of the engine’s auxiliary and main systems.

The pipe seal H 16198 is a precision-engineered sealing element developed to ensure a tight and durable connection along pipe interfaces in the Sulzer ASL25 engine. With its accurately defined geometry (Ø18 × Ø8 × 1124), it effectively compensates for thermal expansion, vibration, and pressure variations in fluid circuits. Manufactured from high-quality, application-specific material, this seal prevents leakage, protects surrounding components from contamination, and supports the stable operation of lubrication, fuel, or cooling systems. Its consistent sealing performance plays a key role in maintaining system efficiency, operational safety, and long service intervals in demanding marine and industrial environments.

The main rocker rack H 27031 is a robust structural component forming the central support and alignment base for the main rocker arms within the Sulzer ASL25 valve train system. Designed to withstand high cyclic loads, vibration, and thermal influence, it ensures precise positioning and synchronized movement of the rocker mechanism. Its rigid construction and accurately machined mounting surfaces minimize deflection and wear, enabling reliable valve timing, smooth power transmission, and reduced mechanical stress. As a key load-bearing element, the main rocker rack plays a vital role in the durability, efficiency, and long-term stability of the engine’s valve actuation system.