The screw plug with code 06.08042-0127.A, conforming to DIN908 standards and sized M60x2ST, is a specialized fastener designed to securely seal threaded openings in the MAN L21/31 engine’s oil or coolant systems. Made for high reliability under pressure and thermal cycling, this plug ensures leak-proof closure while allowing for service access when needed. Its precision engineering and robust construction contribute to the overall safety and maintenance efficiency of the engine.

The gasket with code 06.56936-2355.0 serves as a vital sealing element within the MAN L21/31 engine, preventing fluid or gas leakage between critical surfaces such as cylinder heads, covers, and manifolds. Engineered from high-temperature and pressure-resistant materials, this gasket plays an essential role in maintaining combustion efficiency, system integrity, and environmental compliance. Its proper fit and function are indispensable for avoiding performance losses and potential mechanical failures.

The material specification document with code 11.00196-0001 is a critical reference that defines the exact chemical and mechanical properties required for components used in the MAN L21/31 engine. It outlines the quality standards, treatment processes, and tolerances that ensure each part meets the engine's high-performance and durability requirements. Strict adherence to this specification guarantees component reliability under demanding marine and industrial conditions, supporting engine longevity and operational safety.

The screw identified by code number K 33421 serves as a locking component for the serrated bolt-locking device K 33420 in the Sulzer ZV40/48 engine. Though small, this screw is essential in maintaining secure connections under vibration-heavy conditions. By preventing loosening of the bolt-locking mechanism during engine operation, it plays a crucial safety role and ensures mechanical stability, especially in parts of the engine where high-speed rotation and repeated stress cycles are the norm.

The connecting rod shaft, marked with code K 33101, is an integral part of the engine’s powertrain, acting as the central axis around which the connecting rod pivots. This shaft must offer both torsional rigidity and fatigue resistance, as it is continuously subjected to rotational loads and high-frequency vibrations. In the Sulzer ZV40/48, it helps synchronize the movement of pistons with the crankshaft, contributing to engine efficiency and smooth operation across various load conditions.

The connecting rod with code number K 33000 is a key mechanical linkage in the Sulzer ZV40/48 diesel engine, responsible for converting linear motion from the operating piston into rotational motion at the crankshaft. Built to withstand extreme pressure and dynamic forces, this component plays a vital role in maintaining the precision and power transfer within the engine. Its balanced geometry and high-strength material composition ensure smooth operation and long-term reliability, even under the intense thermal and mechanical stress typical of marine diesel engines.

Cylindrical pins with code EN1P1228 are precision alignment elements used throughout the MAN L21/31 engine to ensure the correct positioning of components such as casings, housings, and covers. Manufactured from hardened steel, these pins provide repeatable and stable assembly, reducing mechanical wear and improving servicing accuracy. Their role in maintaining geometric consistency across critical joints makes them vital for the long-term mechanical stability of the engine.

The cap nut M33x2, bearing code 11.01296-0071.A, is a specialized fastening component used in conjunction with tie rods or studs in the MAN L21/31 engine. Its robust design allows it to sustain repeated tightening cycles and maintain a secure hold under vibration and thermal stress. Accurate torque application on the cap nut ensures a leak-free and vibration-resistant seal, making it a small yet indispensable part of engine reliability during long-term operation.

The tie rod with code 11.01295-0311.C is a critical structural component in the MAN L21/31 engine, used to securely fasten the cylinder head to the engine block. Designed to endure extreme mechanical loads and thermal expansion, the tie rod ensures uniform clamping force across the combustion chamber. Its high-tensile steel construction and precise machining are essential for maintaining engine integrity, reducing distortion, and preventing leaks during high-pressure operation—especially vital in marine and power generation applications.

The upper part of the piston, code K 34101, forms the crown of the operating piston in the Sulzer ZV40/48 engine. Exposed to intense heat and pressure, it is key to combustion performance and durability. Its design supports optimal fuel burn and thermal management, directly influencing power output and longevity.