Mercury - Quicksilver Engine Starter 42MT Direct Drive Series 12-Volt 8M6007278. Overview. Anyone who's spent long days around big equipment - whether it's a trawler easing out of the harbor or a tractor waking up before sunrise - knows how important a dependable starter truly is. When you turn that key, you want your engine to answer immediately, without hesitation or struggle. The Quicksilver 8M6007278 delivers that feeling of certainty, giving heavy-duty marine, industrial, and agricultural e