Mercury – Quicksilver Sterndrive Transom Seal Repair Kit | For MerCruiser Alpha One Gen II Drives | 803099T1

Overview

A good seal is the difference between a smooth-running drive and one that lets water cause trouble. The Mercury Marine 803099T1 Quicksilver Transom Seal Repair Kit gives you everything you need to reseal the transom on your MerCruiser Alpha One Gen II sterndrive. It includes hoses, seals, gaskets, bellows, and hose clamps — all made to Mercury’s original specifications. Whether you’re doing preventive maintenance or repairing a leak, this OEM kit ensures a watertight seal that keeps your boat dry and your drive protected from corrosion.

Key Features

• Purpose: Reseals and protects the transom area from water intrusion.
• Complete Kit: Comes with hoses, gaskets, bellows, seals, and clamps — everything needed for a full reseal.
• Fit: Designed for MerCruiser Alpha One Gen II sterndrives with exhaust bellows.
• Durability: Built from long-lasting, marine-grade materials that resist corrosion, salt, and heat.
• Convenience: OEM kit with everything in one box for a clean, reliable repair.

Engine & Boat Compatibility

• MerCruiser Alpha One Gen II sterndrives equipped with exhaust bellows

Performance & Real-World Benefits

The 803099T1 transom seal repair kit restores the watertight barrier between your boat’s transom and the drive assembly. Over time, rubber bellows, seals, and gaskets dry out or crack, which can allow water into the boat or damage the drive components. This all-in-one kit provides new, perfectly fitting parts that keep moisture out and your drive running at its best.

Whether you’re resealing after a drive removal or replacing worn parts as part of routine maintenance, this kit helps you avoid leaks and long-term corrosion. It’s a smart, simple investment that protects your sterndrive and saves on costly repairs down the road.

Why Choose Mercury OEM

The Quicksilver 803099T1 is a genuine Mercury Marine kit, built to the same standards used in new MerCruiser builds. Cheaper aftermarket kits may use lower-quality materials that can harden, crack, or fail prematurely.

Mercury’s OEM components are precision-molded for perfect fitment and made from marine-grade rubber and stainless hardware for long service life. It’s the same kit Mercury technicians rely on — trusted for reliability, fit, and performance in all conditions.

FAQ

Q1: What does this kit include?
It comes with hoses, seals, gaskets, bellows, and clamps for resealing your Alpha One Gen II transom opening.

Q2: What drives does it fit?
This kit is made specifically for MerCruiser Alpha One Gen II sterndrives with exhaust bellows.

Q3: Why should I replace these parts?
Old seals and bellows can let water in, leading to corrosion, poor performance, or drive damage.

Q4: Is this a complete reseal kit?
Yes — it includes everything needed for a proper transom reseal.

Q5: Why choose Mercury OEM?
Because Mercury’s OEM kits are precision-engineered and tested, ensuring the correct fit, lasting durability, and complete water protection.