The cover with splash tube, code 11.01213-0057-1.0, is engineered to regulate oil dispersion within the MAN L21/31 engine. By directing oil flow and preventing excess splatter, it ensures precise lubrication of internal parts while reducing unwanted buildup or leaks. This component is essential for maintaining internal cleanliness, optimizing lubrication efficiency, and contributing to the overall durability and performance of the engine.

The protecting cap with code 11.01251-0048.0 plays a vital role in safeguarding sensitive engine components from contamination, moisture, and mechanical damage. Used in various exposed areas of the MAN L21/31 engine, this durable cap ensures that critical connection points remain clean and functional during both operation and maintenance. Its robust design contributes to overall engine reliability and helps extend the service life of adjacent parts.

The relief valve coded K 27700 serves a critical safety function in the ZV40/48 diesel engine by regulating excessive pressure within the system. It automatically opens when pressure exceeds the preset limit, protecting sensitive components from potential damage. Engineered for durability and precision, the valve ensures smooth operation under high-pressure conditions while maintaining system stability. This component is essential for preserving the safety, performance, and longevity of both marine and industrial diesel engine installations.

The ring with code 11.01299-0128-1.A is a general-purpose component used within the MAN L21/31 engine assembly to ensure proper alignment or sealing between parts. It may serve in various mechanical couplings where durability and precision fit are essential. Despite its small size, it contributes significantly to the integrity and longevity of the engine system.

The round seal ring, code 06.56936-1507-1.0, is a critical sealing component in the MAN L21/31 engine, ensuring leak-free connections in various fluid systems. Whether used in lubricating, cooling, or fuel circuits, this high-quality ring resists pressure, heat, and chemical exposure. Its reliability is key to maintaining engine cleanliness and operational efficiency during prolonged marine or industrial use.

The bolt identified as K 21002 plays a vital role in securing the clamping pieces that hold key engine components in place. Engineered for high strength and vibration resistance, this bolt withstands substantial mechanical loads during operation. Its precise threading and high-grade material ensure reliable fastening, making it indispensable for maintaining structural integrity and alignment throughout the engine’s working life.

This round seal ring provides reliable sealing at various joints within the MAN L21/31 engine. Designed to resist pressure and wear, it ensures leak-free operation and helps extend component life through stable and clean sealing.

The seal ring M20X26 is a small yet essential component in the MAN L21/31 engine, used to maintain fluid-tight connections in high-pressure and high-temperature environments. It prevents leaks, supports engine cleanliness, and contributes to long-term performance and efficiency.

The connecting rod bolt, code H 33030, is a high-strength fastener used to secure the two halves of the connecting rod in the Sulzer ASL25 diesel engine. This bolt is engineered to withstand immense tensile and compressive forces during combustion cycles, making it an essential element for the engine’s structural integrity. Its precise threading and torque capacity help maintain engine balance and prevent catastrophic failure, ensuring smooth performance across thousands of operating hours.

Cylindrical pins, code EN1P1228, are precision alignment tools used throughout the MAN L21/31 engine to ensure accurate positioning of components such as housings, covers, and structural subassemblies. These hardened steel pins are essential for maintaining mechanical alignment, preventing rotational slip, and ensuring consistent load distribution across connected parts. By securing the geometry of critical interfaces, cylindrical pins play a vital role in minimizing wear and maintaining the long-term reliability of the engine.

The seal ring with code 06.56200-0724.0 is a critical component for maintaining airtight and leak-proof connections within the MAN L21/31 engine. Typically used in high-pressure areas such as cylinder interfaces or fluid line couplings, the seal ring prevents the escape of oil, coolant, or combustion gases. Its resistance to heat, pressure, and chemical corrosion makes it essential for maintaining system integrity and ensuring long-term operational efficiency and safety in demanding marine or industrial environments.

The sealing component coded K 32394 is designed specifically for the locking screw K 32393 to provide an effective barrier against oil leakage and contamination. In the Sulzer ZV40/48 engine, this seal plays a critical role in maintaining the pressure integrity of the system and protecting internal components from dirt, moisture, and thermal fluctuations. Its precision fit and robust sealing capability support long-term engine efficiency and reduce maintenance requirements.

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 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 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.

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 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 bolt marked with code number K 33400 is a high-strength fastener designed to secure the connecting rod shaft in the Sulzer ZV40/48 diesel engine. This component must withstand extreme mechanical stress, especially during high-speed rotation and combustion cycles. It ensures structural integrity and prevents engine failure through tight and durable connection.

The guide bearing cap, code 11.01254-0169.A, is a precision-fitted component used to secure and guide the motion of critical engine elements such as the camshaft or auxiliary shafts within the MAN L21/31 engine. By stabilizing axial and radial movement, the guide bearing cap contributes to smooth engine timing and mechanical efficiency. Its durable design helps reduce wear, misalignment, and mechanical failure over time, especially in applications involving sustained operational loads.

The main bearing cap with code 11.01254-0168-1.B is a structural cornerstone of the MAN L21/31 engine, designed to securely hold the crankshaft's main bearings in place. Subjected to tremendous mechanical forces, this component ensures that the rotating crankshaft remains perfectly aligned during engine operation. Precision-machined and built to withstand stress, the main bearing cap plays a vital role in maintaining engine balance, minimizing vibration, and extending the lifespan of internal components in high-load marine or industrial environments.