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I have a 2003 Regal with twin Mercruisers 4.3 MPI (Bravo 3). The engines should be 2002-2003 (see pics). I have been trying to locate the serial number for a while.
Bondo, Thanks! Thats what Mercruiser told me but I could not find it. Space is limited down there. I will try to find it again today. Is it under, aft, on top or behind the starter?
Sometimes on the side of top cover were it says 4.3 MPI there is a sticker with the three serial numbers on it but it's always best to double check with the plate mounted just above the engine starter to know for sure what engine you truly have in case it may have been replaced at one time.