The FLUSHMASTER is an automated outboard flushing system designed for boaters running multiple engines who want a cleaner, faster way to handle freshwater flushing. This 4-outlet controller includes four 7-foot marine-grade hose kits, giving standard quad-engine setups a practical balance of reach and easy hose management.

FLUSHMASTER flushes each engine one at a time for a timed cycle, then automatically shuts off and blocks water flow. It helps avoid split water pressure while making post-trip engine care easier to complete consistently.

Key Features

• Made for Four-Engine Flushing: Controls up to four outlets for clean, organized multi-engine maintenance.
• Balanced 7ft Reach: Four 7-foot hose kits work well for common quad-outboard layouts.
• Sequential Flush Control: Runs each engine individually instead of dividing water flow across multiple motors.
• Push-Button Convenience: Starts the flushing process with one button and shuts off automatically.
• Dockside-Ready Build: Waterproof and rugged enough for everyday marine use.
• Flexible Installation: Works portably or in a fixed dockside setup depending on your boat layout.

*Quick Connects sold separately.

Kit Includes

• (1) FLUSHMASTER 4-Outlet Controller
• (4) 7′ Marine-Grade Hose Kits
• (8) Hose Clamps + Mini Screwdriver
• (3) AA Batteries
• Installation Guide + 1-Year Warranty

Perfect For

• Standard Quad-Outboard Boats: A practical hose length for many 4-engine transoms.
• Recreational Boaters: Makes flushing easier to do after every run.
• Charter Captains: Saves time at the dock after long operating days.
• Multi-Engine Owners: Automates flushing without manually moving hoses between engines.
• Marine Service Teams: Supports consistent maintenance across multiple motors.
• Saltwater Use: Helps reduce corrosion risk from salt and mineral deposits.

Compatibility

The FLUSHMASTER is compatible with Mercury, Yamaha, Suzuki, Honda, and other four-stroke outboards with standard garden-size flush ports. The 7ft hose setup is a strong choice for standard engine spacing with minimal excess hose.

WARNING: This product can expose you to chemicals which are known to the State of California to cause cancer, birth defects or other reproductive harm. For more information go to P65Warnings.ca.gov.