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MerCruiser Sterndrive Alpha One Lower Unit Complete Gearset That was generally found in 1970-1977 models (Pinion
For 888 drives S/N 3784374 and Below
USCG approved
Cover 305747 0305747 381835 0381835
but will work with any of the stringer drives from this time period since they used the same housing for all the designs
MerCruiser 423-804957T01 GM 93436083 Crankshaft 3.0L 140hp 4cyl 1-Piece Oil Seal Fuel Pump MerCruiser Sterndrive Alpha One LowerItem Details MerCruiser Part Number 423 804957T01 423 804957 Used from 1999 & UP on MerCruiser GM 140hp 4cyl 3. 0L engines using the 1 piece oil seal Engine Serial Numbers SN# 0L605541 & Below (Roughly 1999 & UP) This is for engines with a 1 piece rear main seal. and using the narrow rod journals (1999 & UP). MerCruiser Part Number 423 810842 423 810842T GM part # 93436083. DOES NOT REPLACE 140966 (as the rod journal sizes are allegedly different