- DIY ENGINE WINTERIZING: Quickly flush salt then circulate antifreeze through inboard, outboard, or I/O engines with a simple valve switch.
- DURABLE FLOW HARDWARE: Reinforced clear hose with brass fittings and a gravity-fed design delivers reliable flow, season after season.
- TRAILER FRIENDLY SET UP: Use on the trailer and plumb to a garden hose to warm the engine, then switch to antifreeze without swapping hoses.
- BROADER ONBOARD USES: Also works to winterize water systems, AC lines, washdown pumps, and livewells or baitwells on your boat.
- INCLUDES KEY COMPONENTS: 5-gallon antifreeze tank, on/off valve, and T-connector provide controlled switching from water flush to antifreeze.
- WHAT YOU’LL NEED: Supply engine-safe antifreeze and a motor flusher; plan about 5 gallons per engine and an adapter for front-mounted raw water pumps.
Sale!
Do-It-Yourself Inboard/Outboard Winterizing Kit
Original price was: $40.93.$32.13Current price is: $32.13.
Free shipping on orders over $50Availability: 69 in stock









