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153 tooth (2-Piece Rear Main Seal Applications)
dimensionally correct
AQ-280-DP/DT AQ-290 AQ-290A AQ-290-DP AQ-290A-DP
GM Casting Number 2776952
This also includes the attachements as pictured
MerCruiser 1547-861063A4 Alpha One Gen II 1998 &Up Empty Gear Housing Sterndrive 80hp 153 tooth (2-Piece Rear MainItem Description MerCruiser 1547 861063 C 1547 861063A4 For: Gen II Upper (1998 up), 0L100040 up, 1. 47: 1 Ratio Gen II Upper (1998 up) 0L100040 up, 1. 62 2. 00: 1 Ratios Gen II Upper (1998 up), 0L100040 up, 1. 81: 1 Ratio Gen II Upper (1998 up), 0L100040 up, 1. 94 2. 40: 1 Ratios Basically the Upper drive housings are the same no matter what drive engine you have from that period of 1998 & Up (4cyl 140hp V6 4. 3L V8 305 V8 350 etc) The 1991 1997 Gen