The cylindrical pin, code 06.22020-1214.0, is a precision alignment and positioning element used throughout the MAN L21/31 engine assembly. Designed to ensure exact component placement, it maintains structural alignment between mating parts such as bearing caps, housings, and structural casings. Manufactured from hardened steel to withstand shear forces and vibration, this pin plays a crucial role in maintaining dimensional accuracy and long-term mechanical stability. Though compact in size, it is fundamental to ensuring repeatable assembly quality and reliable engine performance under demanding marine and industrial operating conditions.

The component H 40021 is a precision-manufactured element used within the Sulzer ASL25 engine’s mechanical system, designed to ensure stable interaction between associated assemblies under continuous operational load. Engineered for durability, dimensional accuracy, and resistance to vibration, this part supports reliable system performance and contributes to overall mechanical stability. Its robust construction and accurate fit help reduce wear, maintain correct alignment, and enhance long-term engine reliability in heavy-duty marine and industrial environments.

The sealing ring H 16521 is a precision sealing element engineered to provide leak-free performance in fluid and pressure interfaces within the Sulzer ASL25 engine. Manufactured from material optimized for resistance to oil, temperature variation, and vibration, it maintains reliable elasticity and sealing efficiency over extended service intervals. By preventing leakage and protecting internal components from contamination, H 16521 contributes directly to system cleanliness, operational efficiency, and the long-term durability of critical engine assemblies.

The nut H 27086 is a high-strength fastening component used in critical bolted assemblies of the Sulzer ASL25 engine. Designed to maintain consistent clamping force under vibration, thermal cycling, and continuous mechanical stress, this nut ensures secure retention of structural and functional components. Its precisely machined threads and controlled material properties provide reliable preload, resistance to loosening, and long-term dimensional stability. Although compact in size, the H 27086 nut plays an essential role in safeguarding mechanical integrity and operational reliability in demanding marine and industrial applications.

The gasket with code 06.56936-2355-1.0 is an essential sealing element in the MAN L21/31 engine, used to prevent leakage of fluids or gases between mating surfaces. Designed to withstand pressure, temperature fluctuations, and chemical exposure, this gasket ensures reliable sealing in systems such as lubrication, cooling, or fuel circuits. Its precise fit and material properties contribute directly to engine cleanliness, efficiency, and operational safety, making it indispensable for long-term, trouble-free engine operation in marine and industrial applications.

The nut with code 11.01296-0060.E is a precision fastening component used in conjunction with tie rods or studs in the MAN L21/31 engine. Designed for high preload applications, it ensures secure and stable clamping under extreme thermal and mechanical stresses. Accurate torque application on this nut is essential for maintaining correct tension, preventing loosening due to vibration, and safeguarding critical engine assemblies. Despite its compact size, this component plays a vital role in the overall structural integrity and reliability of the engine.

The tie rod with code 11.01295-0277-1.B is a critical structural fastening element in the MAN L21/31 engine, designed to clamp major engine components such as the cylinder head and crankcase with uniform and controlled pre-tension. Engineered to withstand high mechanical loads, thermal expansion, and continuous vibration, this tie rod ensures even load distribution and long-term dimensional stability of the engine structure. Its high-strength material and precise manufacturing are essential for maintaining sealing integrity, minimizing distortion, and supporting reliable operation in demanding marine and power generation environments.

The O-ring H 16192 is a critical sealing element designed to provide leak-free sealing in fluid and pressure interfaces of the Sulzer ASL25 engine. Manufactured from elastomer optimized for resistance to oil, temperature fluctuations, and vibration, it maintains elasticity and sealing performance over extended service intervals. By preventing leakage and protecting internal components from contamination, the H 16192 O-ring plays a vital role in ensuring system integrity, efficiency, and reliable long-term engine operation.

The nut H 11152 is a high-strength fastening component used in the Sulzer ASL25 engine to secure bolted joints subjected to continuous vibration and mechanical stress. Engineered to maintain consistent clamping force under thermal cycling and dynamic loads, this nut ensures reliable retention of critical assemblies. Its precisely formed threads and controlled material properties support secure installation, resistance to loosening, and long service life, making it an essential element for maintaining structural stability and operational safety.

The A ring H 16321 is a precision retaining and positioning element used in selected assemblies of the Sulzer ASL25 engine to ensure secure axial or radial fixation of components. Designed to operate reliably under vibration, thermal variation, and continuous mechanical loading, this ring prevents unintended movement during engine operation. Manufactured to tight tolerances from durable material, the H 16321 A ring supports assembly integrity, reduces wear on mating parts, and contributes to stable, long-term performance in demanding marine and industrial applications.