Sierra's 18-8212-1 Transom Seal Kit is designed for use in Bravo and Blackhawk applications. The kit includes (1) 18-2756 U-Joint Bellows, (1) 18-2750 Exhaust Bellows, (1) 18-2760 Exhaust Tube, (1) 18-3603 Water Intake Hose, (1) 18-2615 Outdrive Gasket Set, (1) 18-2753-2 Shift Bellows Cable, and (1) 18-21005. It is interchangeable with GLM 21961, Mallory 9-72905, and Mercruiser Stern Drive 30-803100T1, 8M0095485. Each Sierra product meets or exceeds the original equipment part it replaces.