Camco 65501 Boat Winterizing Kit – DIY Engine Antifreeze System (Inboard & Outboard)

Winter storage doesn’t have to mean expensive repairs in the spring. The Camco Do-It-Yourself Boat Winterizing Kit (65501) helps you flush and protect your engine the right way before freezing temperatures hit. This gravity-flow winterizing system makes it easy to run antifreeze through your cooling system to help prevent freeze damage, corrosion, and costly engine issues caused by long off-seasons.

Designed for both inboard and outboard engines, this kit is a smart solution for DIY boat owners who want a simple, reliable way to prep their boat without needing a pump. The included 5/8" reinforced clear hose helps maintain strong flow while resisting kinks, and the durable brass fittings and valves provide long-lasting performance season after season.

All you need is approved marine antifreeze (sold separately) and a flusher (not included), and you’re ready to winterize like a pro.

Key Features

• Part Number: Camco 65501
• Helps protect your engine from freeze damage and winter storage wear
• Gravity-flow operation (no pump required)
• Works with inboard and outboard engines
• DIY-friendly setup for fast seasonal winterizing
• Reinforced clear hose helps resist kinks and improve flow
• Durable brass components for dependable performance

Kit Includes

• Antifreeze tank with on/off valve
• Brass ball valve
• Winterizing tee
• High-flow 5/8" reinforced clear hose with brass fittings

What You’ll Need (Not Included)

• 5 gallons of marine engine antifreeze (sold separately)
• Flusher / engine flush attachment (not included)