The welding plate with code 703020-8.2 is specifically designed for welded joints within the MAN L21/31 engine structure or its auxiliary assemblies. Optimized for high-quality welding, it provides a strong and fatigue-resistant connection capable of handling thermal expansion, mechanical stress, and vibration. This welding plate plays an important role in ensuring structural strength and durability, particularly in harsh marine environments where long service life and mechanical integrity are essential.
Plug screws with code EN47R13 are essential sealing and closing elements used throughout the MAN L21/31 engine to close threaded ports in oil, fuel, or cooling circuits. Designed to withstand pressure, temperature fluctuations, and vibration, these plug screws ensure leak-free operation and protect internal systems from contamination. Their reliable sealing performance and robust material quality make them a critical part of maintaining engine safety, cleanliness, and operational integrity.
The plate with code 2196069-1.0 is a structural component used within the MAN L21/31 engine to provide reinforcement, load distribution, or separation between adjacent assemblies. Precisely manufactured for accurate fitment, it helps maintain alignment and mechanical stability under continuous vibration and operating loads. Made from durable, high-strength material, this plate contributes to the robustness of the engine structure and supports long-term reliability in demanding marine and power generation environments.
The left-handed tachometer H 51345 is a mechanical speed-measuring device designed to monitor engine rotational speed in Sulzer ASL25 installations with left-hand rotation. Built for accuracy and reliability in harsh operating environments, this tachometer provides clear, consistent RPM readings essential for engine control, diagnostics, and safe operation. Its robust construction and precise internal gearing ensure stable performance under vibration and temperature variation, making it a dependable instrument for long-term monitoring in marine and industrial engine rooms.
The upper spring plate H 55049 is a robust load-distribution component used within the fuel pump or valve spring assembly of the Sulzer ASL25 engine. Designed to provide precise seating and even force transmission from the spring to adjacent components, it helps maintain accurate mechanical operation under continuous cyclic loading. Engineered for dimensional stability, vibration resistance, and long-term durability, this spring plate reduces localized stress, prevents premature wear, and contributes to the overall reliability and consistency of the fuel or valve actuation system.
The fuel pump piston and cylinder set H 55030 is a precision-engineered assembly at the heart of the Sulzer ASL25 fuel injection system, responsible for generating the high pressures required for accurate fuel delivery. Manufactured to extremely tight tolerances, this matched pair ensures controlled fuel metering, consistent injection timing, and efficient atomization under varying engine loads. Its wear-resistant materials and finely finished surfaces minimize internal leakage and friction, supporting stable combustion, reduced emissions, and long service life in demanding marine and industrial applications.