Flushmaster Flush Port Quick Connect for Yamaha OutboardsFlushmaster has created a quick and easy way to flush your Yamaha outboard engine. This quick connect flush port is designed to permanently replace your existing OEM flush port plug. It allows you to get a quick connection every time you flush your outboard during routine maintenance. Easy to use all you have to do is twist off the cap, connect your hose, flush the system then reverse the steps.Constructed from marine grade materials, this quick connect port is designed for long lasting with resistance to UV and corrosive effects from marine environments. A double O-ring design ensures a tight and leak free seal every time. A secured locking cap provides protection against accidental disconnection during routine maintenance.This quick connect port is compatible with Yamaha outboard engines 150HP - 425HP with a flush port. This port is NOT compatible with any 2024/2025 115HP or smaller outboards as well as Yamaha outboards 50-115/450HP.Includes: Mercury Male Quick Connect; 2 - Female Hose Quick Connect; Installation Instructions: Unthread your Yamaha flush port and thread in the new female quick connect on the male side; Thread the Seamule male quick connect piece and thread it into the female side of Yamaha flush port; Connect your second female quick connect on the end of your water supply.;