Wartsila L20/R20 Main Bearings
2026-04-23
Wartsila L20/R20 Main Bearings: Product Details
The main bearings for the Wartsila L20 and R20 four-stroke diesel engines are precision-engineered components designed to support the crankshaft and ensure reliable power transmission. These engines, introduced in the 1990s, are renowned for their fuel flexibility (operating on MDO, HFO, and ultra-low sulfur fuels) and compact design . The main bearings are critical for maintaining the correct crankshaft alignment and absorbing combustion and inertial forces.
Specifications & Design
Part Numbers: The primary OEM part number for the standard main bearing kit is 100183. A specific "Main Bearing 0 Kit" is also available under part number 100186 .
Compatibility: These bearings are suitable for a wide range of in-line cylinder configurations, including:
L20 Series: 4L20, 5L20, 6L20, 7L20, 8L20, 9L20
R20 Series: 6R20 .
Thrust Bearings: In addition to standard main bearings, specific thrust bearing kits (e.g., part 100028) are available to manage axial crankshaft movement .
wartsila L20 Ex Valve Seat 120022
Supplying G60 36/45 Main Bearing
Related Article
We are the biggest supplier of Engine Valves and Pistons in China. Offer customers from all over world with high quality products, competitive price and best service!
Marine Diesel Engine G60 36/45 Standard Thrust Bearings
The Wärtsilä L20 Plunger is the high-pressure fuel pump plunger and barrel assembly for the Wärtsilä L20 series four-stroke medium-speed diesel engine. It is a core precision component of the fuel system, responsible for generating high-pressure fuel and controlling the fuel supply, directly determining the injection pressure, atomization quality, and combustion efficiency.
Wartsila L20 Plunger
