18-2643 Sierra Mercruiser Upper Gearcase Seal Kit Bravo Manufacturer: Sierra Part Number: 18-2643 Cross References: SIE 2643, SIE18-2643, 0418-2643, 04182643, 18-2643 Replaces: Mercruiser 26-16709A2, 26-16709A 2 , Mallory 9-74301 Description Upper Unit Seal Kit: Bravo - Blackhawk (verify fitment using your model or serial number)
