Assigning Crankshaft Main Bearing Shells
WARNING: This page is about a different variant/trim than selected.
 Courtesy of CHRYSLER GROUP, LLC
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The upper main bearings can be identified by the four digit mark etched in the block (1) next to the oil pump.
 Courtesy of CHRYSLER GROUP, LLC
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The lower main bearings can be identified by the code etched on the front of the crankshaft counter weight (1). This color code indicates which bearing shell halves are to be used.