START WITH WHAT YOU WANT TO IMPROVE
Three ways to simplify the flush.
Choose one upgrade or combine compatible products. You do not need every product to get started.
Automate the routine
Flushmaster Controllers
Add automatic timing with Flush Port Quick Connects, Flush Port Reroutes or Water Inlets. Choose Controller capacity by engine count, then measure hose reach.
Make hookups easier
Flush Port Quick Connects
Upgrade a compatible engine flush port for a quick hose connection. Use with a garden hose or a compatible controller setup.
Bring the connection closer
Flush Port Reroutes
Move separate engine flush connections to a plate inside the boat. Plan for installation parts and engine-specific professional guidance.
SEE THE SEQUENCE
One engine at a time.
No more babysitting.
Automated sequential flushing for one to four outboard motors. Designed to deliver full water pressure to each engine-one at a time-with the push of a button.
Accelerated illustration. Set actual flush times and follow the procedure specified by your engine manufacturer.
Ready when you are. Press Play or Next.
Four-engine boat shown. The demo runs your selected number of engines. Water paths are illustrative.
Meet your new washdown connection.
Automatic engine flushing is at our core. Now we’re making onboard washdown connections easier, too.
NEW 45° & 90° WATER SPIGOTS
SOLID 316 SS · UNIVERSAL QUICK CONNECT
Works with standard store-bought hose quick-connect adapters. Our included adapter has a 316 stainless steel internal spring for corrosion resistance in saltwater environments.
For onboard washdown. Hose and spray nozzle sold separately.
FIND MY SETUP
Your boat. Your starting point.
Choose the improvement you want and your engine count. We’ll help you take the next step.
How do I measure with a dock line?
Lay a dock line from your planned controller location to each flush connection. Follow the real route and leave natural slack. Measure the longest run and choose a hose option that reaches comfortably.
These are controller outlet hoses. Your water-supply hose and any internal reroute-installation hose are separate.
YOUR STARTING POINT
2-Outlet Flushmaster Controller
Review Controller & Hose OptionsConfirm your engine’s approved flush connection before buying. Quick Connect upgrades and reroute installation parts are separate.
Flush Port Quick Connects
Choose a compatible connection for each engine. Start with your engine brand, then check the listed model and fitment details.
A controller is optional. Quick Connects can also simplify a compatible garden-hose hookup.
Confirm My Engine Fit
Quick Connect Water Inlets
Use one fitting per connection you are upgrading. Check the existing plumbing and mounting dimensions.
Plan My Inlet Upgrade →
Plate shown as an example. Select your outlet count, orientation, and color.
Dual Outlet Flush Port Reroute
Choose one plate in the outlet count above, then confirm orientation and hose-barb size. The plate and installation kits are purchased separately.
Confirm My Reroute Setup Read the Installation GuideStandard engine-flushing setup shown. Engine plumbing varies; have a qualified marine technician confirm the connection method before cutting any line.
Less Hassle.
More Boating.
Flushmaster Controllers time each engine’s freshwater flush, switch between outlets, and shut off the water when the cycle ends.
For single through quad outboards. Easier connections and reroute options available.
UPGRADE YOUR EXISTING CONNECTIONS
Already have flush ports inside your boat?
If your engine flush lines already run to fittings on the transom or inside the boat, you may be able to upgrade the connections using the plumbing you already have.
Replacing individual fittings?
Quick Connect Water Inlet
A premium direct replacement or quick-connect option made from solid 316 stainless steel. Works with the Flushmaster Controller for automatic timing or a garden hose for manual flushing.
Confirm mounting dimensions, hose size and plumbing for your installation. Includes 1/2" and 3/8" barbs.
Replacing a reroute panel?
Flush Port Reroute
Upgrade compatible existing flush connections to a plate with Quick Connects. Choose the outlet count, orientation, color, and barb size that fit your boat. Each engine keeps its own separate flush connection.
Have a marine technician confirm plate fit and whether your existing hoses can be reused.
One hose. Wash down or flush.
Using the same garden hose for your spray nozzle and Flushmaster Controller? Switch between them without kinking the hose or walking back to the spigot.
On your hose: the shutoff valve and female Quick Connect adapter stay in place.
On your nozzle and controller: one male Quick Connect tip stays on each.
Close the valve. Swap the connection. Reopen the valve.
The valve gives you water control right at the hose end.
Includes: 2 male tips, 1 female adapter, and 1 shutoff valve. Fits standard 3/4" garden-hose threads. Garden hose and spray nozzle not included.
Made for the way you boat.
Dock, lift, trailer, or a connection inside the boat. Start with your actual hose route and where you want the controller to sit.
A freshwater rinse. A better routine.
Flushing sends fresh water through the engine’s cooling passages to rinse away salt and residue after use.
Flushmaster helps simplify the connections and routine. Your engine manufacturer still determines the correct flush connection, engine position, whether the engine must remain off, and flush duration.
Let customers speak for us
Great Product!
A must have for ease of proper flushing...
Arrived quickly
Outstanding product makes the engine flush extremely easy and convenient. There is absolutely no excuse to not get one!
Makes flushing soooooo easy. Plug in hose while I’m putting the cover on the boat and by the time I’m done with the cover I disconnect and hop off the boat. Hassle free
Wow, what can I say, it was a great experience, service dept. went above and beyond! I'm telling all my boating friends about how you back up your product! I am also a yacht broker, and I'm spreading the word to my clients!
Much Appreciation,
Mike Garner
Infinity Yacht Sales FL.
Great product that saves me time!
Perfect as promised
Great product. Easy to install. You may need to trim your water line to prevent kinking but it’s a five minute job with clips and a new wire tie.
It’s easy
Really great item. It sure makes flushing easier.
The Flushmaster is an excellent product—effective, convenient, and very easy to use. It flushes my outboard engines in sequence while I clean and organize the boat. After one year, a port stopped working, and Flushmaster sent me a replacement unit immediately, no questions asked. Special thanks to Brooke for quick and excellent support Amazing product and outstanding customer support—thank you!
Easy installation.. easy to use .. just don’t drop the hose end in the drink …
It’s fast and so convenient and simple to use! Thanks so much!
Easy to install and even easier to use. Makes rinsing my twin engines a snap when the boat is in the slip
BEFORE YOU BUY
Good questions. Clear answers.
Do I need every Flushmaster product?
No. The Controller adds automatic timing and sequential flushing.
The Flushmaster Controller works with all three connection options: Flush Port Quick Connects at the engine, a Flush Port Reroute that moves the connections inside the boat, or a solid 316 stainless steel Water Inlet for a premium direct replacement or quick-connect option. Choose the connection that fits your setup; you do not need all three for the same engine route.
Does the controller flush all engines at once?
No. It sends water through one selected outlet at a time, moves to the next programmed outlet, and shuts off water when the cycle finishes. Use the procedure and flush duration specified for your engine.
Does a controller need boat wiring or permanent mounting?
No boat wiring is needed. The controller is battery-powered and can be used as a portable setup or with suitable mounting accessories. Choose its location first, then measure the hose route to each engine or rerouted flush connection.
How do I choose the hose length?
Run a dock line from the planned controller location to each flush connection, following the actual route with natural slack. Measure the longest run you need. Controller outlet hoses are separate from the water-supply hose and the internal hose used for a reroute installation.
Are Quick Connects required with a controller?
No. Flush Port Quick Connects are an optional upgrade for easier hookup at the engine. The Controller also works with Flush Port Reroutes and Water Inlets. Choose one connection path for each engine route and confirm fit before ordering.
Can I install a Reroute myself?
Installation varies by engine and vessel. Review the Reroute Installation Guide before buying or cutting anything, and have a qualified marine technician confirm the connection method. Stop and seek professional help whenever a step or engine connection is unclear.
Does a Reroute plate include the installation hose?
The plate and Reroute Install Kit are separate. For a new reroute installation, choose one plate with the appropriate outlet count and one matching Reroute Install Kit per engine. Each kit contains one 25 ft hose, four clamps, and one tee fitting.
If your boat is already rerouted, have a marine technician check the existing hoses and fittings before buying new installation hose. You may be able to reuse compatible plumbing.
My boat already has rerouted flush ports. What do I need?
Start with the connections already on your boat. A Quick Connect Water Inlet can replace compatible individual water fittings; a Flush Port Reroute can replace a compatible panel or connection layout. Confirm mounting dimensions, hose size, rear clearance, and one separate flush line per engine with a qualified marine technician.
Why choose the Hose Connection Kit instead of just a spare male tip?
A male tip is only one part of the connection. For a complete spray-nozzle-to-controller setup, the Hose Connection Kit adds two male tips, a matching female adapter, and a shutoff valve.
The valve lets you stop water at the hose end before disconnecting, then reopen it after connecting the nozzle or controller. Check which compatible pieces you already have when choosing replacement parts.
Spend less time figuring it out.
Start with your boat and the improvement you want. We’ll point you toward the right product options.
Already have your core setup? Explore mounts, covers, and accessories or Quick Connect Water Fittings.