Flushmaster 4-Outlet 5 ft Outboard Flush System

The Flushmaster automated flushing system is configured for a four-engine installation and includes 5 ft outlet hoses. Instead of moving one garden hose from engine to engine, the controller sends freshwater through each connected motor in sequence. A single START command begins the cycle, and the unit closes the water flow automatically when the programmed flush is finished. This 4-outlet version keeps four short outlet runs organized around a compact quad-engine transom, making regular post-trip engine care easier to fit into the normal docking routine.

The controller operates from three AA batteries and does not need to be hardwired into the boat. Freshwater can come from a dock spigot, garden hose, or suitable plumbing connection, so the system can be used at a marina, driveway, or storage yard. Its enclosure carries an IP67 waterproof certification for wet marine service. This package minimizes excess hose when the controller can sit near the center of the engine group, while the 5 ft outlet hoses still leave enough slack for normal engine spacing and movement during setup.

This kit is intended for compatible four-stroke outboards that provide factory flushing connections. Setup consists of loading the batteries, attaching all 4 outlet hoses to the controller, connecting the freshwater supply, and routing the 5 ft hoses to the engine flush points. After the plumbing is connected, the controller handles the sequence without requiring the operator to remain at the transom and switch hoses manually. The package includes the Flushmaster device, three AA batteries, 4 outlet hoses, hose clamps, a screwdriver, instructions, and warranty information.

• Sequential operation services multiple outboards from one freshwater connection
• Automatic shutoff stops flow when the programmed cycle is complete
• Battery-powered controller remains portable and does not require vessel wiring
• Compatible with common dockside and household freshwater sources
• Installation hardware and operating documentation are included

Stage the 4-outlet controller where all 5 ft hoses can reach their engines without kinks, hot surfaces, or interference with steering hardware. A clean installation also makes future inspection and service easier because the connections remain accessible and organized. For related products and compatible marine hardware, browse more Plumbing Valves & Accessories.