Make seasonal winterizing more organized with a gravity flow antifreeze tank and fittings in one kit.
5 gallon tank, T connector, shutoff valve, reinforced clear hose, and fittings are included.
High flow fittings help move antifreeze through compatible systems during winterizing.
Works with many inboard and outboard engines when paired with antifreeze and any needed adapters.
A practical setup for owners who handle their own boat or RV winter maintenance.
More Details
Includes 5 gallon antifreeze tank.
Includes T connector, on and off valve, shutoff valve, clear reinforced hose, and fittings.
Uses gravity flow system.
Works with many inboard and outboard engines.
Do not connect to raw water pump suction.
Antifreeze, motor muffs, or pump adapter are sold separately.
Description
This boat and RV winterizing kit gives DIY owners the core tank and fittings needed to run antifreeze through compatible systems. The 5 gallon tank, valve, hose, connector, and fittings keep the setup organized for seasonal maintenance.
Use it with antifreeze and any needed motor muffs or pump adapter sold separately. It works with many inboard and outboard engines when used with the product instructions.
Our Shipping Rates and Speeds
All orders under $60 ship for $6.99
Orders over $60 ship for FREE
You can expect to receive your items in 3 to 7 days in almost all scenarios
90% of orders arrive in 4 days or less
Try our boat and RV winterizing kit risk free for 30 days. If you are not satisfied, get a full refund.
Application
Designed for raw water pumps mounted inside the outdrive using the conventional muff type flusher method. Not suitable for front engine mounted raw water pump systems. Read all instructions and warnings before starting.
Parts included
Tank vent cap, hose flow valve, brass T bracket, tank valve, clear hose, winterizing tank, and tank fill cap. Recommended products sold separately: Better Boat Outboard Motor Muffs and propylene glycol antifreeze.
1. Preparation
Use propylene glycol antifreeze with a burst protection level of at least -50°F and pre-warm antifreeze to room temperature for better flow. Follow the antifreeze manufacturer’s dilution instructions. Assemble the winterizing kit by attaching the tank valve to the tank fill cap, connecting the brass T bracket, hose flow valve, garden hose, clear hose, and motor muffs or other flushing system as shown in the diagram. Unscrew the tank vent cap to help fluid flow.
2. Setup
Place the winterizing tank on its side on the swim platform or rear portion of the boat, above the flusher. Ensure the tank vent cap is removed and all valves are off. Pour at least 5 gallons of antifreeze into the winterizing tank and replace the tank fill cap securely.
3. Winterizing Process
Open the black hose flow valve to start fresh water flow and confirm water is squirting from the flusher or motor muffs attached to the outdrive. Disengage the propeller, start the engine, and allow it to reach operating temperature. Close the black hose flow valve and immediately open the antifreeze tank valve. Confirm colored antifreeze appears in the clear hose. If not, stop the engine and recheck setup. When antifreeze drops to within 2 inches of the tank spout, stop the engine just before the tank is emptied, leaving no more than 1 quart of antifreeze remaining.
4. Final Steps
Remove the flusher or motor muffs from the outdrive. Replace the tank vent cap and turn off the fresh water faucet. Disconnect the garden hose from the black valve and store the winterizer for future use. Consult your owner’s manual for additional winterizing steps such as fuel stabilizer, corrosion guard, and engine fogging.
