Flushmaster - The portable solution for automated outboard flushing! Spring til indhold


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The FLUSHMASTER is a marine-grade, portable device used to simplify the process of flushing your outboard motors- saving time, water, and ensuring proper maintenance.

With just the push of a button, your motors will flush one at a time for your set amount of time, shutting off after completion and blocking the flow of water. There is no need to return to the device, boat, or disconnect your hoses until your next boating adventure!

The FLUSHMASTER device can be connected directly to a water spigot, attached on the end of a water hose, or hung on a piling. We recommend connecting directly to a spigot nearest to your boat. Select the optimal hose length to accommodate your application.


Flush Your Motors in 3 Easy Steps!

  • Connect device to water source
  • Attach outlet hoses to boat motors
  • Press START

Each FLUSHMASTER order comes with everything you need to flush your motors with ease:

  • Flushmaster Device
  • (3) AA Batteries
  • Outlet Hoses
  • Hose Clamps
  • Screwdriver
  • Instructions Manual and Warranty

Product Details:

  • Runs on (3) AA batteries. Battery life estimate is 6-12 months
  • Pre-programmed for 15 minutes (easily changeable)
  • Waterproof
  • Measurements: 8" x 8" x 4" 
  • Weight: 2 pounds
  • 1-Year Warranty

Product Patented

Select Device:
Select Hose Length:
flushing triple mercury outboards
Flushmaster Salgspris$287.99

Customer Reviews

Based on 7 reviews
Keith Pardue
Great product

Love the product, quick setup and engines are flushed while I’m washing down the boat without input from me. However, I wish it came with quick connectors at the control box end so I could remove hoses and store them in my dock box. This way they would be out of the way and protected from the elements.


Love m6 new unit and quick connects. Twin Yamaha 150’s. My wife hooks it upm after i clean the boat. Major time saver, works perfect and easy to use. Only thing I’d change is buying it years ago for all my boat motors in years past.

Timothy McLellan
Super convenient

Easy hookup and extremely convenient. I'm able to do other things while the motors flush.

Mark Winger
Game changer

Just mounted the flush master on my pier. I’m now able to flush my two Mercury 300 Verado’s with ease! I changed the times to 20 minutes each and now I can wash the rest of my boat while the engines are being flushed.

Love the product.

We have had an awesome experience with all the seamule products and customer service has been amazing.