The Transom Seal Repair Kit 30-803099T1 by GS MARINE is specifically designed for MerCruiser Alpha One Gen II Stern Drives. This bellow kit comes with a 1-year warranty and is a reliable solution for maintaining the sealing performance of your boat's sterndrive system. With manufacturer part numbers from GS MARINE, Mallory, and Sierra, this kit ensures a perfect fit and high-quality construction for your boat's transom seal repair needs.