Don’t settle for aftermarket. Factory MERCURY part 816957 provides factory engineering designed for your exact engine — exactly what your engine was designed around. Your engine deserves better than cheap knockoffs. Aftermarket parts often fail when you need them most. Factory MERCURY components meet exact specifications using materials proven in harsh marine conditions — saltwater spray, relentless vibration, intense UV exposure. Aftermarket parts simply don’t deliver the same reliable performance and longevity. Invest in MERCURY factory part 816957 for reliable performance you can count on. Reliability you can trust. Genuine OEM means staying on the water longer and dealing with fewer unexpected failures. That’s 40+ years of marine industry experience talking. FITS: Fits Models (Force/Mercury): 1987 Force 50 HP (507Y7C) 1988 Force 50 HP (H0504H88D, 507X8C) 1989 Force 50 HP (H0507F89A) 1990 Force 50 HP (507Y90D) 1991 Force 50 HP (508F91A) 1992 Force 40 HP (H0407E92C) 1992 Force 50 HP (507F92A) 1994 Force 40 HP (0E032309) 1996 Force 40 HP (0E138600 – 0E202999) 19 STAY OUT ON THE WATER LONGER WITH GENUINE OEM PARTS FROM US BOATWORKS. Over 2 million parts in stock including NLA and hard-to-find parts. Can’t find what you’re looking for? Call or text us: 913-342-0011