Mercury - Quicksilver Sterndrive Transom Seal & Service Kit For MerCruiser R, MR & Alpha One Drives 803097T1. Overview. If you've ever pulled a MerCruiser drive, you know how important a proper seal is. The Mercury Marine 803097T1 Quicksilver Sterndrive Transom Seal & Service Kit gives you everything you need to do the job right - gaskets, seals, and bellows - all made to fit perfectly. Designed for MerCruiser R, MR, and Alpha One sterndrives with exhaust tubes, this kit helps keep water where i