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SeaMule SM-FM4020 FlushMaster 4-Port Engine Flushing System with Dual 20ft Hoses

Manufacturer

SeaMule

<h3>About SeaMule</h3><p>Based in Madeira Beach, Florida — the heart of Florida's Gulf Coast boating community — SeaMule is a marine solutions brand built around one guiding philosophy: life on the water should be effortless. From weekend anglers to seasoned offshore captains, SeaMule designs products that eliminate the tedious side of boat ownership so you can spend more time doing what you love.</p><h3>The Flushmaster: Redefining Outboard Engine Care</h3><p>SeaMule's flagship innovation is the <a href="/18624-seamule-engine-flushes-201925">Flushmaster Outboard Engine Flush System</a> — widely recognized as the world's first portable, automated outboard flushing device for single and multi-engine boats. Flushing outboard motors after saltwater use is one of the most critical maintenance habits a boat owner can develop, yet it has traditionally been a time-consuming, hands-on chore. The Flushmaster changes that equation entirely.</p><p>The device handles up to four outboard motors sequentially, flushing each one for a pre-programmed duration before automatically shutting off and blocking the water flow — no babysitting required. Powered by just three AA batteries, it connects easily to any standard freshwater source and cycles through every motor in order, ensuring thorough cleaning without the owner having to stay present.</p><ul><li><strong>IP67 waterproof certified</strong> — built to withstand harsh marine environments, including rain, spray, and accidental submersion</li><li><strong>Compatible with four-stroke outboards</strong> across major brands including Mercury, Yamaha, Suzuki, and Honda</li><li><strong>Available in 2-outlet and 4-outlet configurations</strong> with multiple hose length options to fit a wide range of boat setups</li><li><strong>Auto shut-off</strong> once all motors are flushed, conserving water and freeing up your time</li><li><strong>Included 1-year warranty</strong> for peace of mind</li></ul><h3>The Complete Flush System</h3><p>SeaMule doesn't stop at the Flushmaster controller. The brand also offers Flush Port Quick Connects — purpose-built connectors that permanently replace OEM flush ports on Mercury, Yamaha, Suzuki, and Honda engines. Together, the Flushmaster and Quick Connects form a comprehensive <a href="/18624-seamule-engine-flushes-200369">outboard engine flush solution</a> that makes connecting hoses a one-handed, tool-free process. Additional Flush Hose Kits, a Housing Cradle, Portable Storage Bag, and a PVC Piling Plumbing Kit round out the ecosystem for boaters who want a fully integrated setup.</p><h3>Built for the Water, Designed for Convenience</h3><p>Every SeaMule product is engineered to hold up in the demanding marine environment — UV-resistant, weatherproof, and constructed from materials chosen for long-term durability on the water. The brand's commitment to sustainable, eco-conscious materials reflects an understanding that the boating community depends on healthy waterways. Whether you're docked at a marina, tied up at a piling, or back in the driveway after a long day offshore, SeaMule's solutions are designed to fit naturally into your post-trip routine.</p>

Part Number

SM-FM4020
06/01/2036 9:08 AM
Sale Price

$524.74

In Stock (6)

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Usually delivered within 2 days

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Product Details

The SeaMule SM-FM4020 FlushMaster is a professional-grade automatic engine flushing system designed to maintain up to four outboard or inboard/outboard engines. This portable system features two 20-foot hoses, providing extended reach for larger boats and multi-engine setups where motors are spaced farther apart.

Key Features:

  • 4-Port Design: Capable of flushing up to four engines sequentially, automating the maintenance process
  • Extended 20-Foot Hoses: Includes two 20-foot hoses for maximum flexibility and reach on larger vessels
  • IP67 Waterproof Rating: Fully protected against dust and temporary water immersion, built for harsh marine environments
  • Battery-Powered Operation: Runs on three AA batteries for cordless convenience and portability
  • Marine-Grade Construction: Built with corrosion-resistant materials engineered to withstand saltwater exposure
  • Sequential Flushing: Automatically cycles through connected engines, ensuring thorough internal cleaning of each unit
  • Water and Time Savings: Efficient automated operation conserves fresh water while reducing manual maintenance time

Proper engine flushing removes salt, sand, and mineral deposits that can cause corrosion and reduce engine performance. The FlushMaster automates this critical maintenance task, helping extend engine life and maintain optimal performance. Backed by a 30-day satisfaction guarantee.

Products specifications

Description

4-Port with (2) 20 ft Hose Kits

Smooth

Great

Fast Service

All good.

Good price. Quick delivery

Great and trustworthy

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