Sierra International 18-8218 Transom Seal Kit 18-8218. It is interchangeable with Mallory 9-72902 and Mercruiser 30-803097T1. The kit includes Sierra's 18-2100 Heavy-Duty Gimbal Bearing 18-2161 Shift Arm 18-2619-1 Outdrive Gasket Set 18-2750 Exhaust...