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.
The O‑ring with code K 21404 is a critical sealing element designed for the cylinder liner of the engine. Its primary function is to provide a leak‑proof barrier between the liner and engine block, preventing coolant and combustion gases from mixing. This component endures high temperatures and pressures, maintaining its integrity even under intense thermal cycling. A properly functioning O‑ring is essential for preserving compression and ensuring optimal engine performance over long operational periods.
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 tie rod ensures a secure connection between the cylinder head and crankcase. In the MAN L21/31 engine, it plays a vital role in distributing internal forces evenly, preventing deformation, and maintaining engine integrity under heavy-duty conditions.
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 upper bearing of the connecting rod, marked H 33021, is an essential wear surface between the connecting rod and crankshaft pin in the Sulzer ASL25 engine. It allows for smooth rotational movement and reduces metal-on-metal contact, thereby preventing damage and minimizing frictional losses. Constructed from high-load, fatigue-resistant materials, this bearing supports the dynamic motion of the engine’s internal components and plays a crucial role in preserving performance and efficiency over long-term use.