1991 MerCruiser Inboard Engine Models Where can I find my serial number? 3.9LD [PORT] 33912B9DD 33912B9DS 3.9LD [STARBOARD] 33922B9DD 33922B9DS 5.7L [350MAG.SKI] 357A1111S 5.7L [CARB] 3571111DS 3571199DS 3571211DS 3571299DS 3572111DS 3572199DS 3572211DS 3572299DS 3575119DS 5.7L [SKI] 3570111DS 3579111DS 3579119DS 5.8LD [PORT] 35812C9DS 5.8LD [STARBOARD] 35822B9DS 35822C9DS 642D 3423299DD 34232B1DD 34232B2DD 34232B3DD 34232B4DD 34232B5DD 34232B6DD 34232B7DD 34232B8DD 34232B9DD 34232C1DD 34232C2DD 34232C3DD 34232C4DD 34232C5DD 34232C6DD 34232C7DD 34232C8DD 34232C9DD 34232D1DD 34232D2DD 34232D3DD 34232D4DD 34232D5DD 34232D6DD 34232D7DD 34232D8DD 34232D9DD 34232K9DD 7.4L 37232C9DS 37411C6DS 37430K4DS 37431D7DS 37431E7DS 37431L9DS 37432C9DS 37432D7DS 37432E7DS 37432M6DS 37432M9DS 37435D6DS 37435E7DS 37435E9DS 37436C6DS 37436C9DS 37436D9DS 37436E7DS 37439K4DS 37439M7DS 38430K4DS 7.4L [CARB] 37430M7DS 37431B4DS 37431C4DS 37431C6DS 37431D6DS 37431D9DS 37431K4DS 37431L6DS 37431M6DS 37432B4DS 37432C4DS 37432C6DS 37432D6DS 37432D9DS 37432K4DS 37432L6DS 8.2L 38230K4DS 38231A4DS 38231C4DS 38231D7DS 38231D9DS 38231L9DS 38231M6DS 38232A4DS 38232C4DS 38232C9DS 38232D7DS 38232E7DS 38232K4DS 38232M6DS 38232M7DS 38235E7DS 38235E9DS 38236C6DS 38236C9DS 38236E7DS 38239K4DS 39230K4DS 8.2L [CARB] 38230M7DS 38231B4DS 38231C6DS 38231D6DS 38231E7DS 38231K4DS 38231L6DS 38231M7DS 38232B4DS 38232C6DS 38232D6DS 38232L6DS 38235C6DS 38236D9DS 38239M7DS
5.7L [CARB] 3571111DS 3571199DS 3571211DS 3571299DS 3572111DS 3572199DS 3572211DS 3572299DS 3575119DS
642D 3423299DD 34232B1DD 34232B2DD 34232B3DD 34232B4DD 34232B5DD 34232B6DD 34232B7DD 34232B8DD 34232B9DD 34232C1DD 34232C2DD 34232C3DD 34232C4DD 34232C5DD 34232C6DD 34232C7DD 34232C8DD 34232C9DD 34232D1DD 34232D2DD 34232D3DD 34232D4DD 34232D5DD 34232D6DD 34232D7DD 34232D8DD 34232D9DD 34232K9DD
7.4L 37232C9DS 37411C6DS 37430K4DS 37431D7DS 37431E7DS 37431L9DS 37432C9DS 37432D7DS 37432E7DS 37432M6DS 37432M9DS 37435D6DS 37435E7DS 37435E9DS 37436C6DS 37436C9DS 37436D9DS 37436E7DS 37439K4DS 37439M7DS 38430K4DS
7.4L [CARB] 37430M7DS 37431B4DS 37431C4DS 37431C6DS 37431D6DS 37431D9DS 37431K4DS 37431L6DS 37431M6DS 37432B4DS 37432C4DS 37432C6DS 37432D6DS 37432D9DS 37432K4DS 37432L6DS
8.2L 38230K4DS 38231A4DS 38231C4DS 38231D7DS 38231D9DS 38231L9DS 38231M6DS 38232A4DS 38232C4DS 38232C9DS 38232D7DS 38232E7DS 38232K4DS 38232M6DS 38232M7DS 38235E7DS 38235E9DS 38236C6DS 38236C9DS 38236E7DS 38239K4DS 39230K4DS
8.2L [CARB] 38230M7DS 38231B4DS 38231C6DS 38231D6DS 38231E7DS 38231K4DS 38231L6DS 38231M7DS 38232B4DS 38232C6DS 38232D6DS 38232L6DS 38235C6DS 38236D9DS 38239M7DS
