Precision fit of crankshaft bearing cap - AH03.20-P-4351-02SX

WARNING: This page does not describe the selected car, but rather 28 other vehicles, including the 2012 Mercedes-Benz GL550, 2012 Mercedes-Benz GL450, 2011 Mercedes-Benz ML63, 2011 Mercedes-Benz ML550, and 2011 Mercedes-Benz ML350. However, it is still accessible from the selected car via links, so may be relevant.

The crankshaft bearing caps are machined together with the crankcase and must not be interchanged.
The crankshaft bearing caps are fitted on the side in the crankcase and must be mounted in the correct installation position. If the installation position is correct, the semicircle will point (3) in the direction of travel (arrow).
The crankshaft bearing caps are numbered consecutively on the semicircles (3) beginning with the first crankshaft bearing cap at the front.

Fig 1: Identifying Crankshaft Bearing Caps Numbers
Courtesy of MERCEDES-BENZ OF NORTH AMERICA.