I currently have a 3.2L crossfire engine apart at the dealer and am looking to get a questions answered that no one can seem to answer. The short block comes with only the block, main caps, and the pistons. The question is, how do we determine which main bearings to use? They show 3 standard size bearings.

5174344AA Standard, Blue - 1 dot
5174345AA Standard, yellow - 2 dots
5174346AA Standard, Red - 3 dots

We do not have a table to cross-reference any sizing issues and since we are reusing the same crank, and installing new caps, I don't believe we could match up to the old bearings. But even if that were the case, according to a Mercedes dealer they should have markings on the thin side of the bearing to coincide with the dots. They do not. Any help would be appreciated.

James Campbell
james@genesteffy.com