Flushmaster Outboard Flushing System – 4 Outlet with 12' Hose Kits (SM-FM4012) | Multi-Engine Marine Flush Kit

Maintain peak performance and extend the life of your engines with the Flushmaster Outboard Flushing System SM-FM4012. Designed for convenience and efficiency, this system features four outlets and 12-foot hose kits, allowing you to flush multiple outboard engines or water systems simultaneously.

Ideal for boat owners, marinas, and service professionals, this flushing system helps remove salt, sand, debris, and corrosive buildup from your engines after every use. Regular flushing is essential for preventing internal corrosion and ensuring long-term reliability—especially in saltwater environments.

The 4-outlet manifold design provides even water distribution to each connected engine, while the included 12-foot hoses offer flexibility and easy reach during maintenance. Built for durability and ease of use, the Flushmaster system simplifies routine engine care, saving time and effort.

Why Choose the Flushmaster System?

The Flushmaster system is engineered for efficient, multi-engine flushing, making it a perfect solution for boaters with multiple outboards or marine technicians handling frequent service work. Its streamlined design reduces setup time while delivering consistent water flow to each engine.

Key Features

• Sequential Flushing Logic: Delivers full water pressure to one engine at a time, providing a deeper flush than systems that split water flow simultaneously.

• Hands-Free Automation: Features a built-in 15-minute timer (adjustable) that automatically shuts off the water flow once the cycle is complete.

• Portable & Cordless: Operates on three AA batteries with no hardwiring required, allowing it to be used at the dock, on a trailer, or stored onboard.

• Marine-Grade Durability: Built with a waterproof IP67-rated housing, 316 stainless steel internals, and UV-resistant materials.

• Universal Compatibility: Works with Mercury, Yamaha, Suzuki, Honda, and other major four-stroke outboards with standard flush ports.

Specifications

• Brand: Flushmaster

• Model: SM-FM4012

• System Type: Outboard flushing system

• Number of Outlets: 4

• Hose Length: 12 feet each

• Application: Marine engine flushing and maintenance

• Compatibility: Most outboard engines with flushing ports

What’s in the Box?

• Flushmaster 4-Outlet Controller

• (4) 12-Foot Marine-Grade EPDM Hose Kit

• Hose Clamps and Mini Screwdriver

• (3) AA Batteries

• Installation Guide and Warranty Information

Ideal Applications

• Flushing multiple outboard engines at once

• Routine maintenance after saltwater use

• Marina service stations and boatyards

• Multi-engine boats and fleets

• Preventative engine care and winterization prep

How It Works

Simply connect the system to a freshwater source, attach each hose to your outboard flushing ports, and run water through the system. The multi-outlet design ensures even water flow to each engine, making flushing quick and efficient.