Crankshaft Main Bearing: Service and Repair

Upper Crankshaft Bearing Identification

The upper bearing shells are allocated to the cylinder block with the correct thickness, by the factory. Colored dots serve to identify the bearing thicknesses.

The letters marked on the lower sealing surface of the cylinder block identify which bearing thickness must be installed in which location.











• The arrow points in the direction of travel.

• If the colored dot can no longer be read, use the blue bearing shell.

• The lower crankshaft bearing shells are always shipped as a replacement part with a "yellow" dot.