Mercury - Quicksilver Engine Starter Direct Drive Marine Starter Corrosion-Resistant Build 8M6007290. Overview. There's a particular kind of relief you feel when a big inboard turns over cleanly-no hesitation, no sluggish drag, just a firm, confident crank that says your day on the water is off to the right start. The Quicksilver 8M6007290 delivers exactly that feeling. When you're running a 5.7L, 6.2L, 7.4L, 8.1L, 8.9L, or even a 9.0L engine, you need a starter that doesn't flinch, no matter th