This is a genuine Mercury Marine Quicksilver factory OEM part, not aftermarket
The part 31-805182A1 is a Mercury Marine / MerCruiser Bearing Assembly (Roller Bearing).
It is used within the gear housing / drive assembly of certain outboards and sterndrives to support rotating shafts and reduce friction.
The Mercury Marine bearing assembly 31-805182A1 is compatible with several MerCruiser Bravo sterndrive models.
COMPATIBILITY:
BLACKHAWK 1994-1995 - ALL BRAVO 0M100001 THRU 0W249999 BRAVO ONE - 0W250000 & Up BRAVO DRIVES - 0B664190 THRU 0F729999 BRAVO STERNDRIVES - 0F730000 THRU 0M100000 BRAVO THREE - 0M100001 THRU 0W249999 BRAVO THREE - 0W250000 & Up BRAVO THREE - 0B664190 THRU 0F729999 BRAVO THREE - 0F730000 THRU 0M100000 BRAVO TWO - 0M100001 THRU 0W249999 BRAVO TWO - 0W250000 & Up BRAVO TWO - 0B664190 THRU 0F729999 BRAVO TWO - 0F730000 THRU 0M100000 BRAVO X ONE - 0M100001 THRU 0W249999 BRAVO X ONE - 0W250000 & Up BRAVO X THREE - 0M100001 THRU 0W249999 BRAVO X THREE - 0W250000 & Up BRAVO X TWO - 0M100001 THRU 0W249999 BRAVO X TWO - 0W250000 & Up BRAVO XR ONE - 0W240000 & Up BRAVO XR SPORTMASTER - 0M906878 & Up BRAVO XR THREE - 0W240000 & Up HI PERFORMANCE TRANSOM - 0W150003 & Up INTEGRATED TRANSOM - 0M052768 & Up