Mercury - Water Separating Fuel Filter Bracket Fuel System Mount Cast Aluminum 89876A3. Overview. Every boater knows the fuel system is only as good as the parts you trust to protect it. When you're miles from the dock with a following sea behind you, the last thing you want is water or debris creeping into your engine. The Quicksilver 89876A3 Water Separating Fuel Filter Bracket is one of those behind-the-scenes components that keeps you running clean and confident. Mounted off the engine, it h