Mercury - Quicksilver Fuel Line Assembly Marine Fuel System Gray Low-Permeation Construction 8M0061890. Overview. There's a familiar kind of reassurance that settles in when your boat starts cleanly and runs without hesitation. Most of us who spend our weekends on the water know that feeling well - the quiet certainty that your gear is doing exactly what it should. The Quicksilver Fuel Line Assembly, part number 8M0061890, delivers that confidence in a simple but essential way. You squeeze the p