Motor Flushers of 2025
Best Choice1
Five OceansFive Oceans Inboard Motor Muff, Universal Inboard Motor Flusher, Fake a Lake - Black PVC Marine Grade Round Cup Muff, Telescoping Shaft from 18" to 30", Garden Hose Connector & Quick Connect - FO4602
Main highlights- MARINE-GRADE MATERIALS: Leakproof - The fake lake - Round Muff is made of UV Resistant Black PVC. The Aluminum Pole is designed to resist harsh conditions in the marine environment
- ENGINE PROTECTION: Inboard Motor Flusher provides a way to connect the Inboard to a freshwater source and effectively flush out sand, salt water, sediment, seaweed, and silt. It helps extend your outboard engine's life
- EASY TO OPERATE: You can connect these Inboard Motor Muffs to a standard garden hose or an optional quick-connect male adapter end and rubber washer. The large diameter suction cup eliminates fall-off or blow-by while flushing
- DIMENSIONS: Round Muff Diameter: 5-1/2" (70mm). Telescoping Shaft: Aluminum pole extends from 18" to 30" (457mm to 762mm)Standard Garden Hose Size: 3/4" (19mm). Male Quick Connector Size: 5/8". FIVE OCEANS, 40 Years developing High-Quality Marine & Outdoor Products
- COMPATIBILITY: Fake a lake - Great for inboard engine flushing, winterizing, or any time you need to run an inboard engine out of the water. For use on gas or diesel inboard engines with thru-hull water intakes. Great for Ski and Wake Boats
9.9Exceptional
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Value for Money2
SeaworksSeaworks Steel Dual Feed Muff Style Heavy Duty Steel Boat Motor Flusher | Use for Antifreeze Winterization or Common Water Flush | 5/8 Inch Standard Garden Hose Connection
Main highlights- Seaworks was born as a passion project by avid boater and fisherman. Your satisfaction is our priority and please contact us for any questions or concerns you might have!
- Seaworks Motor Flusher: Use our flusher for routine maintenance to flush out salt and mineral buildup. Also great for winterizing your engine with antifreeze.
- Fits most engine models: Compatible with most inboard and outboard engines including Mercury, Yamaha, Evinrude, Mercury, Yamaha, Johnson, Chrysler, Honda, Nissan, Suzuki as well as others.
- Easy to use: Just slip our flusher muffs over the lower unit intake, connect a garden hose to the standard 5/8 quick-connect valve, and flush your engine.
- Dual Flow and Steel Body: Our dual flow design allows for higher pressure and better cleaning power. Steel Body for additional durability and leak protection. Our motor flusher also comes with an adapter for other sized hoses.
9.8Exceptional
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3
Marpac43% OffInboard Engine Motor Flusher Fake a Lake Ski Boat Mastercraft Malibu Nautique
Main highlights- Telescoping flusher installs in minutes
- No tools required
- Large cup prevents water blow-by or fall off during usage
- For use on gas or diesel inboard engines with thru-hull water intakes. Great for ski & wake boats
- Adjustable from 18" to 30" with just a twist
9.6Exceptional
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4
SeaworksSeaworks Dual Feed Muff Style Boat Motor Flusher | Use for Antifreeze Winterization or Common Water Flush | 5/8 Inch Standard Garden Hose Connection
Why we love it
Easy to use with garden hose.
Compatible with most engine brands.
Effective dual flow cleaning.
9.5Excellent
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5
SEACHOICE22% OffSeachoice Adjustable Inboard Engine Flusher w/Telescoping Shaft, Perfect for Hard to Reach Motors
Main highlights- Telescoping shaft ensures precise alignment, especially in hard-to-reach areas
- Shaft length: 18-1/2 to 31 inches
- Manufacturer part number 50-18331
- Large diameter suction cup eliminates fall-off or blow-by while flushing
- Easily installs on raw water strainer for inboard engines without tools
- Designed to flush sand, silt, and alkali from your inboard engine
9.4Excellent
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6
SeaSenseSeaSense Dual-Flow Motor Flusher
9.9 Simple to use9.5 Durability9.3 worth the moneyWhy we love it
Extends engine life with dual water source.
No tools needed, easy to use.
Fits larger motors, durable spring steel arms.
9.1Excellent
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7
Redneck ConventRedneck Convent Dual Water Feed Boat Motor Flusher Rectangular Cup Muffs with Hose Fittings Flush Kit – Marine Outboard Engine Flushing
Main highlights- 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
- 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
- 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)
- 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
- 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)
8.8Very Good
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8
Better Boat10% OffBoat Motor Muffs, Outboard & Inboard I/O Engine Flush Kit, Ear Flusher Hose Adapter for Marine Engine Winterizing, Flushing & Warming
Why we love it
Easy to install, no tools needed.
Universal fit for most engines.
Double-sided water intake improves flushing.
8.7Very Good
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9
CamcoCamco 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)
Main highlights- Great for boat winterization
- 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
8.4Good
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10
SEA DOGSEA DOG 521550-1 Inboard Motor Flush,1 Pack
Main highlights- Quickly flush away salt, Sand, minerals, and contaminates from your lower Unit cooling system
- No tools required
- Great for winterizing, tune-ups and other maintenance that requires running an Inboard engine out of the water
- Fit the rubber cup over the water intake, connect a garden Hose, and extend the aluminum leg sealing cup to the hull
8.2Good
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