Mercury - Quicksilver Fuel Line Assembly, 12 Ft with Primer Bulb Fuel System Components Low-Permeation Marine Hose 8M0061887. Overview. There's a certain comfort that comes from squeezing the primer bulb, hearing fuel move through the line, and knowing your outboard is going to start strong. When your fuel system is dependable, the whole day feels easier - from early-morning launches to long, warm afternoons drifting in your favorite cove. The Quicksilver 12-foot Fuel Line Assembly, part number