Quicksilver 44357Q2 Through Gear Case Flushing Kit Semi-universal outboard and stern drive flushing kit makes quick work of protecting your engine and drive from the harmful effects of galvanic corrosion Essential and easy to use tool for flushing internal parts of engines and drives used in salt or brackish water or where invasive plant species must be flushed before departing a launch ramp area Easily connects to a fresh water source with a standard garden hose connection Produced to meet Mercury Marine original equipment manufacturer specifications to best protect your Mercury, Mariner or Force outboard and MerCruiser stern drive and engine Attach and remove only when engine or drive is turned off and engine cannot be started