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Flushmaster 2-Outlet (single to dual engines)
Flushmaster 4-Outlet (single to quad engines)
Flushing Your Outboards Sucks!
We Fixed That.
3 Biggest Frustrations of Outboard Flushing - Solved!
Time
Our Flushmaster devices automatically flush up to 4 engines one at a time. A 30-minute chore now takes 30 seconds.
Hassle
Flush Port Quick Connects make hose hook-ups one-handed, and replace frustrating OEM connections.
Safety
The Flush Port Reroute moves your flush ports from your outboards to a safe, convenient location inside your boat.
Flushmaster
The Flushmaster takes the hassle out of outboard maintenance. This marine-grade, portable device automatically flushes up to four outboard motors — one after the other — with just the press of a button. Powered by (3) AA batteries, it connects to a water spigot or hose, flushes each motor sequentially, then shuts off automatically, saving you time, water, and effort.
Choose between 2- or 4-Outlet models with different hose lengths to fit your setup. Built tough with an IP67 waterproof rating, the Flushmaster is the easiest way to protect your investment and keep your engines running like new — without standing around switching hoses.
*Not for toilets or urinals.
Flush Port Quick Connects
Say goodbye to frustrating, hard-to-reach OEM flush ports. Our Flush Port Quick Connects permanently replace your stock flushing ports with a durable, marine-grade, snap-on solution built to withstand the harshest elements.
Designed for Yamaha, Mercury, Suzuki, and Honda outboards, these connectors let you flush your engines in seconds — no twisting, threading, or struggling with hoses.
Enjoy a leak-free connection, faster maintenance, and more time on the water.
Flush Port Reroute
The Flush Port Reroute eliminates the hassle of climbing over your engines or balancing on the transom to flush your outboards. These innovative quick connects relocate your OEM flush ports to inside the boat, giving you a safer, faster, and cleaner way to maintain your engines.
The Reroute uses our Flush Port Quick Connect design—the same twist-to-lock and leak-free performance. Made from marine-grade materials, the Reroute offers a clean, OEM-style look with options to match any setup.
Turn any water inlet/outlet into a Quick Connect!
Quick Connect Water Fitting
Simplify your boat’s water management needs with the Flushmaster Quick Connect Water Fitting. This versatile system integrates seamlessly into your existing setup, offering a fast, secure way to handle a wide range of tasks—from engine flushing and deck rinsing to baitwell fills and freshwater washdowns. Made from corrosion-resistant solid 316 stainless steel materials, it’s built to perform trip after trip, no matter what the water throws your way.
Let customers speak for us
great investment hook it up with quick connections and walk away best purchase for the boat
Love the product!! No more forgetting the water is on while flushing!!
This is the best thing since sliced bread. So easy to use. This is the 2nd flushmaster I had to get. The first was replaced under warranty. Great service from a great company. Thank you Flushmaster
Saves a tremendous amount of time
I bought this product for my 2021 Mercury 250XL motor. The old, 'crappy', plug had gotten so bad I had to use pliers to get it open or close it.
This quick install has saved a huge amount of time when I pull back into my dock. I have one hose dedicated to the motor with the quick connect, and the other hose I start rinsing the boat down. 15 minutes later....all done.
Well done, Flushmaster!
Makes the worse part of clean up very easy.
Great Product. Quick Connects made life on the dock after a long day a lot easier.
Bought 2 of these products & make flushing engines a breeze. Would & have recommended them to several friends.
Works great, ordered the suzuki attachments for my twin 250 Yam's! Big time saver at reasonable cost!
Made flushing my big twin Mercury 300's way easier!!! Thanks Flushmaster!!
Saves a lot of time and hassle
Hooked On Maintenance Blog
Tired of Fighting Your Mercury Flush Port? Here’s a Better Way
Mercury outboard owners often deal with leaking flush ports, stuck caps, cross-threaded fittings, and clogged water lines. This post breaks down the most common issues with Mercury’s OEM flush system and explains how the Flushmaster Quick Connect offers a simple, permanent fix. With tool-free operation, better visual indicators, and no risk of cross-threading, it’s a smart upgrade for anyone tired of the standard flush port hassle.
Heading South for Lobster Mini Season? Don’t Forget Your Flushmaster
Planning to head south for Florida’s Lobster Mini Season on July 30–31, 2025? If your boat will be in the water and running hard all week, a reliable flush system is a must. This post covers why bringing a Flushmaster—especially the 2‑ or 4‑Outlet system and portable storage bag—can save your engines from sand, salt, and corrosion. Learn how this portable, automatic system keeps your outboards clean without wasting your time after a long day of diving.
Why Flushmaster Is the Best Flushing Option for Docks Without Plumbing