10 Best Boat Winterizing Kit

Boat Winterizing Kit. We look at thousands of unbiased or high-quality reviewers around ecommerce sites such as Amazon, Walmart, Home Depot, Wayfair, etc. We analyze from customer experience of the product to find out if these products are worth the spend. We make comparisons, to give readers real insights into how different brands and models measure up against each other.

We do the research ourselves by analyzing reviews and ratings from customers, to help you purchase wiser to avoid buyer’s remorse.

Our list of the Best Boat Winterizing Kit

MERCURY QUICKSILVER OEM Outboard Winterization & Storage Essentials Kit #1

$93.70  in stock
2 new from $93.70
Amazon.com
as of May 17, 2022 1:54 pm

Features

  • OEM MERCURY QUICKSILVER OUTBOARD WINTERIZATION & STORAGE ESSENTIALS KIT #1
  • HIGH PERFORMANCE GEAR LUBE QUART, STORAGE SEAL FOGGING OIL, 2-4-C LUBE
  • QUICKSTOR FUEL STABILZER, CORROSION GUARD SPRAY
  • ALWAYS CHECK CAPACITIES OF YOUR MOTOR TO AMKE SURE YOU DONT REQUIRE ADDITIONAL QUANTITIES

STAR BRITE Do-It-Yourself Winterizing/Engine Descaling Kit

$71.99
$66.00
 in stock
22 new from $61.78
Amazon.com
as of May 17, 2022 1:54 pm

Features

  • Removes deposits to keep engines running cool
  • Quickly and easily descales inboard and outboard/engine cooling systems
  • For Winterizing and descaling
  • Quick and easy way to winterize inboard and outboard engines

RecPro RV Antifreeze -50°F Protection Non-Toxic (4 Pack)

$64.95  in stock
Amazon.com
as of May 17, 2022 1:54 pm

Features

  • -50° Burst protection
  • Lubricates seals and gaskets
  • Safe for marine engine blocks
  • Made from materials considered non-toxic by the FDA
  • Will not harm steel, plastic, copper, or brass plumbing

Camco Do It Yourself Boat Winterizer- Quickly Winterize Marine Engines, Allows Flushing and Preparation of Boat Engine for Winter Storage (65501)

$66.99
$42.47
 in stock
19 new from $42.47
1 used from $30.51
Free shipping
Amazon.com
as of May 17, 2022 1:54 pm

Features

  • Perfect for Boat Winterization: This gravity flow system flushes, prepares and protects your boat engine for winter storage
  • Compatibility: For inboard and outboard engines
  • Kit Includes: Antifreeze tank with on/off valve, ball valve, winterizing tee and reinforced, clear hose with fittings
  • Provides Enhanced Antifreeze Flow: High-flow, 5/8-inch hose with brass fittings improves the antifreeze flow to your engine
  • Features: A reinforced clear hose for improved kink resistance

Seaworks Boat Winterizer Gravity Motor Cleaner with Flusher Kit - Gravity Flow System DIY Winter Preparation Solution for Marine Engines - for Inboard and Outboard Engines

$39.62  in stock
1 used from $39.62
Free shipping
Amazon.com
as of May 17, 2022 1:54 pm

Features

  • Seaworks Boat Winterizer flow system flushes, prepares and protects your boat engine for winter storage. Compatible for inboard and outboard engines. Flusher included with kit.
  • Kit includes: antifreeze tank with on/off valve, T-Connector, shutoff valve, braided hose with fittings, flusher.
  • Fittings designed for uninterrupted antifreeze flow to your engines, cleans impurities and enhances engine performance. Use at regular intervals to improve engine life expectancy.
  • Antifreeze(not included) and flusher (included) required to operate kit, 5-gallons of compatible antifreeze required for boat winterization. Do not use an antifreeze with a burst protection level of less than -50°F.
  • For front engine mounted raw water pumps (including most Volvos and inboards) a Front Engine Pump adapter (not included) is needed to connect directly to the suction side of the raw water pump. Do not attempt to to connect directly to the suction side of the raw water pump. Do not attempt to winterize a front engine mounted raw water pump system using this method.

Seaworks Boat Winterizer Gravity Motor Cleaning Kit - Gravity Flow System DIY Winter Preparation Solution for Marine Engines - for Inboard and Outboard Engines

$39.17  in stock
2 new from $39.17
Free shipping
Amazon.com
as of May 17, 2022 1:54 pm

Features

  • Seaworks Boat Winterizer flow system flushes, prepares and protects your boat engine for winter storage. Compatible for inboard and outboard engines.
  • Kit includes: antifreeze tank with on/off valve, T-Connector, shutoff valve, braided hose with fittings.
  • Fittings designed for uninterrupted antifreeze flow to your engines, cleans impurities and enhances engine performance. Use at regular intervals to improve engine life expectancy.
  • Antifreeze(not included) and flusher (not included) required to operate kit, 5-gallons of compatible antifreeze required for boat winterization. Do not use an antifreeze with a burst protection level of less than -50°F.
  • For front engine mounted raw water pumps (including most Volvos and inboards) a Front Engine Pump adapter (not included) is needed to connect directly to the suction side of the raw water pump. Do not attempt to to connect directly to the suction side of the raw water pump. Do not attempt to winterize a front engine mounted raw water pump system using this method.

SPLASH 619526 RV/Marine Antifreeze, 1 gal, Pink

$24.98  in stock
2 new from $24.98
Amazon.com
as of May 17, 2022 1:54 pm

Features

  • Designed for use with recreational vehicles, boats, spas, pools, and vacation homes
  • Formulated for -50°F burst protection
  • Convenient, ready-to-use solution
  • DOW USP propylene glycol

Camco Boat Dual Water Feed Motor Flusher - Flushes Contaminates Out of Your Boat Engine | Dual Input Design | Connects to Standard Water Hoses |Great for Winterization - (50141)

$22.76  in stock
5 new from $22.76
2 used from $15.72
Free shipping
Amazon.com
as of May 17, 2022 1:54 pm

Features

  • Flushes contaminates out of the engine
  • Dual input design enables better flow through the engine
  • Connects to any standard garden hose
  • Compatible with most outboards and sterndrives
  • Great for boat winterization

Camco Permanent Pump Converter Winterizing Kit- Allows You to Use Boat/RV Water Pump to Fill Pipes With Antifreeze - Lead Free, CSA Low Lead Content Certified (36543)

$12.71  in stock
39 new from $12.71
4 used from $9.65
Free shipping
Amazon.com
as of May 17, 2022 1:54 pm

Features

  • Use the RV water pump to fill the RV pipes with antifreeze
  • Comes complete with brass valve, siphon hose, Teflon tape and pump adapters (pump not included)
  • Makes winterizing easier
  • Permanent, one-time installation
  • Compliant with all federal and state level low lead laws. CSA Low Lead Content Certified to NSF/ANSI 372

STA-BIL (22001) Fogging Oil - Stops Corrosion In Stored Engines - Lubricates And Protects Cylinders - Coats Internal Engine Components - For All 2 and 4 Cycle Engines, 12 oz.

$10.52  in stock
73 new from $4.99
Amazon.com
as of May 17, 2022 1:54 pm

Features

  • Coats internal engine components to prevent corrosion
  • Displaces moisture from metal to protect engine
  • Lubricates cylinders to prevent cylinder damage (scuffing) at start up
  • For all 2-cycle and 4-cycle gasoline engines
  • Made in the U.S.A.

New releases on Amazon:

New
AMRWSM-K2 Outboard Engine Winterization Kit
  • A complete do-it yourself winterization kit for Outboard engines.
  • Kit includes: (Qty - Description) 1- 12 Oz Aerosol Fogging Oil 1- 16 Oz Fuel Stabilizer - Treats 80 Gal.
  • 2- 1 Qt Synthetic Blend Gear Lube 1- Gear Lube Pump 1- Drain Screw Gasket
  • This kit includes enough Gear Lube for 1 gear case.
  • For all your Boat Parts and Accessories click on "Available from these sellers" then click on AccessoriZ My Ride
New
RecPro RV Antifreeze -50°F Protection Non-Toxic (4 Pack)
  • -50° Burst protection
  • Lubricates seals and gaskets
  • Safe for marine engine blocks
  • Made from materials considered non-toxic by the FDA
  • Will not harm steel, plastic, copper, or brass plumbing
SaleNew
Seaworks Boat Winterizer Gravity Motor Cleaner with Flusher Kit - Gravity Flow System DIY Winter Preparation Solution for Marine Engines - for Inboard and Outboard Engines
  • Seaworks Boat Winterizer flow system flushes, prepares and protects your boat engine for winter storage. Compatible for inboard and outboard engines. Flusher included with kit.
  • Kit includes: antifreeze tank with on/off valve, T-Connector, shutoff valve, braided hose with fittings, flusher.
  • Fittings designed for uninterrupted antifreeze flow to your engines, cleans impurities and enhances engine performance. Use at regular intervals to improve engine life expectancy.
  • Antifreeze(not included) and flusher (included) required to operate kit, 5-gallons of compatible antifreeze required for boat winterization. Do not use an antifreeze with a burst protection level of less than -50°F.
  • For front engine mounted raw water pumps (including most Volvos and inboards) a Front Engine Pump adapter (not included) is needed to connect directly to the suction side of the raw water pump. Do not attempt to to connect directly to the suction side of the raw water pump. Do not attempt to winterize a front engine mounted raw water pump system using this method.
New
Seaworks Boat Winterizer Gravity Motor Cleaning Kit - Gravity Flow System DIY Winter Preparation Solution for Marine Engines - for Inboard and Outboard Engines
  • Seaworks Boat Winterizer flow system flushes, prepares and protects your boat engine for winter storage. Compatible for inboard and outboard engines.
  • Kit includes: antifreeze tank with on/off valve, T-Connector, shutoff valve, braided hose with fittings.
  • Fittings designed for uninterrupted antifreeze flow to your engines, cleans impurities and enhances engine performance. Use at regular intervals to improve engine life expectancy.
  • Antifreeze(not included) and flusher (not included) required to operate kit, 5-gallons of compatible antifreeze required for boat winterization. Do not use an antifreeze with a burst protection level of less than -50°F.
  • For front engine mounted raw water pumps (including most Volvos and inboards) a Front Engine Pump adapter (not included) is needed to connect directly to the suction side of the raw water pump. Do not attempt to to connect directly to the suction side of the raw water pump. Do not attempt to winterize a front engine mounted raw water pump system using this method.
New
Redneck Convent Boat Motor Flusher Round Circular Cup Muff Plunger with Hose Fitting Flush Kit – Marine Inboard Engine Flushing
  • INBOARD FLUSHER: Use the Redneck Convent Boat Motor Flusher Round Circular Cup Muff Plunger with Hose Fitting Flush Kit – Marine Inboard Engine Flushing to obliterate salt and mineral build up along with other contaminants from your inboard boat engine with through hull water intakes when hooked up to a garden hose; Effective way to flush engine with fresh water to prevent clogging and corrosion and allow for engine adjustments
  • EASY INSTALLATION: Requires no tools for installation or removal and perfect for hard-to-reach areas; Simply twist on to attach to your intake and connect your garden hose to the included quick connect fitting to run motor out of the water or use to winterize motor; Never turn water supply to full force or damage to drive may occur
  • FITS YOUR BOAT: Fully adjustable and compatible with inboard engines with through hull water intakes; As long as your boat includes a water pick-up on the bottom of the boat, this flusher is for you; Make sure the boat intake scoop is less than 5 inches (12.7cm) and you have enough clearance under your trailer
  • NO LEAKAGE: Round (circular) cup is easy to put on and provides maximum water flow while allowing zero leakage once you start the engine; Cup dimensions 5.6-inch outer diameter (OD), 4.9-inch inner diameter (ID), 1.75-inch depth (14.2cm OD, 12.4cm ID, 4.4cm depth); Total flusher length is 18.75 inches (47.6cm)
  • CONTENTS: Package includes (1) flusher and (1) quick connect style hose fitting that easily attaches to your standard garden hose (hose not included)
SaleNew
Redneck Convent Dual Water Feed Boat Motor Flusher Rectangular Cup Muffs with Hose Fittings Flush Kit – Marine Outboard Engine Flushing
  • ULTIMATE DUAL FEED FLUSHER: Use the Redneck Convent Dual Water Feed Boat Motor Flusher Rectangular Cup Muffs with Hose Fittings Flush Kit – Marine Outboard Engine Flushing to obliterate salt and mineral build up along with other contaminants from your outboard boat engine’s lower unit cooling system when hooked up to a garden hose; Effective way to flush engine with fresh water to prevent clogging and corrosion and allow for engine adjustments
  • EASY INSTALLATION: Requires no tools for installation or removal; Simply slide the flusher muff cups over the top of the water intake slots on your boat and connect your garden hose to one of the included quick connect fittings to run motor out of the water or use to winterize motor; Never turn water supply to full force or damage to drive may occur
  • FITS YOUR BOAT: Compatible with most Johnson/Evinrude, Mercury, Yamaha, Chrysler, Force, Honda, Nissan, Suzuki, and Tohatsu outdrives; As long as your boat includes side water inlet ports, this flusher is for you; Rotate muff ears to fit and seal over the water pick-ups on the lower unit (cups swivel to be positioned horizontally or vertically for a multitude of ways to put it on)
  • NO LEAKAGE: Inferior round cups do not always fit correctly over intake ports, but these rectangular cups are easy to put on, clamp very tightly, and provide maximum water flow in both intakes while allowing for zero leakage once you start the engine; Cup dimensions 5 inches x 3.25 inches and 1.25 inches deep (12.7cm x 8.3cm x 3.2cm); Black coated steel frame for quick and secure connection
  • CONTENTS: Package includes (1) dual feed flusher and (2) quick connect style hose fittings that easily attach to your standard garden hose (hose not included)
New
Camco Boat Dual Water Feed Motor Flusher - Flushes Contaminates Out of Your Boat Engine | Dual Input Design | Connects to Standard Water Hoses |Great for Winterization - (50141)
  • Flushes contaminates out of the engine
  • Dual input design enables better flow through the engine
  • Connects to any standard garden hose
  • Compatible with most outboards and sterndrives
  • Great for boat winterization
SaleNew
BESPORTBLE 1 Boat Motor Flusher Universal Professional Rectangular Durable Engine Ear Muff Motor Flusher for Ship Yacht Marine Boat
  • Function: It is an effective method to flush the engine with fresh water to remove salt, sand and silt to prevent corrosion, which is very practical.
  • Design: Black-coated spring steel frame can be connected quickly and safely.
  • Products include: including quick-connect hose connectors, which can be easily connected to standard garden hoses.
  • Easy to connect: just slide the cup over the sink and connect the garden hose to the quick connect fitting.
  • Material: Made of high-quality materials, exquisite workmanship, strong and sturdy, durable, and can be used for a long time.

Last update on 2022-05-18 / Affiliate links / Images from Amazon Product Advertising API