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Lower Gear Housing Assembly replaces MerCruiser part # 1623-8951A37
For Alpha One & MRForward Gear Tapered Roller Bearing Bore Size: 3.4985-3.5000 in. I.D. (88.86-88.90 mm)
Lower Complete Gear Housing Assembly
For Alpha One Gen II (Serial No. OD469859 & Up)Standard RotationRatio: 13:21
Crankshaft Bearing replaces MerCruiser part # 30-67923T
Lower Gear Housing Assembly- Black replaces MerCruiser part # 1623-815822A30
For Alpha One Gen II (Serial No. OD469859-OK999999)Forward Gear Tapered Roller Bearing Bore Size: 3.4985-3.500 in. I.D. (88.86-88.90 mm)
ROPE-SAFETY Mercruiser 50-16230
QC CONVERTER Mercruiser 64-851623
BOLT Mercruiser 10-881623
SCREW Mercruiser 10-898101623
WASHER Mercruiser 525-12-162382
PLUG ASSY Mercruiser 22-861623A2
Supersedes: 22-861623
Supercedes: 22-861623
GROMMET Mercruiser 25-16231