Flushmaster Honda Outboard Flush Port Adapter

The Flushmaster quick-connect kit converts a compatible Honda outboard flush port into a permanent snap-together connection for routine engine flushing. It eliminates the need to repeatedly screw and unscrew the original flush-port fitting every time the cooling passages need freshwater. Double O-rings on the male connector help maintain a secure seal, and the spring mechanism is designed for repeated use around saltwater. For owners who flush after every trip, the conversion can make a maintenance task much quicker and less awkward.

This version is designed for most Honda outboards that use the factory flush-port arrangement. Because Honda applications can vary by model and year, the existing port should be checked before the original connector is removed. The kit is intended as a permanent replacement rather than a temporary hose adapter, so correct thread fit and seating are important. Once installed, the quick connection lets the water hose be attached without disturbing the engine-side fitting.

Installation begins by unthreading the Honda flush port and installing the new female quick connector on the engine side. The supplied male connector threads into the female side of the Honda flush-port assembly, and the second female connector goes on the water source. That arrangement leaves a matched quick-connect pair in place for future flushing sessions. The package includes two female connectors and one double-O-ring male connector.

• Converts the factory flush port to a permanent quick connection
• Double O-rings help maintain a leak-resistant seal
• Simplifies repeated freshwater maintenance after use
• Includes engine-side and water-supply connection hardware

Use the system with a suitable freshwater supply and follow Honda procedures for flushing the specific outboard. 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.