30-803097T1 Transom Seal Repair Kit with Lower Shift for Mercruiser R, MR, Alpha One Gen 1 1983-1990 Sterndrives.This repair kit includes components necessary to replace the transom seal and lower shift shaft on compatible sterndrive units.Designed for use with specific for Mercruiser models manufactured between 1983 and 1990, the kit supports maintenance and restoration of the drivetrain's sealing system.Includes gaskets, seals, and hardware required for installation.proper fit and function when servicing the transom area of the sterndrive. Compatibility Disclaimer: This is an replacement part.Any names or model designations mentioned are used solely for the purpose of demonstrating compatibility.