Mercury - Fuel Quick Connect V6 & V8 FourStroke Series Marine-Grade Composite 8M0146934. Overview. Anyone who's spent enough time around a boat knows the feeling-you're ready to get out on the water, but a stubborn fuel connection threatens to slow the entire day down. That's exactly why the Mercury 8M0146934 Fuel Quick Connect is such a small but indispensable piece of gear. It clicks in with that confident, "you're good to go" sound, giving you the peace of mind that your fuel line is locked,