Mercury - Engine Sensor FourStroke / Verado / Racing Series Marine-Grade Electronic Construction 8M0082988. Overview. There's a certain comfort that comes from knowing your engine is reading the world accurately - every throttle push, every temperature shift, every small adjustment beneath the cowling. When you're out on the water, you don't think about sensors until one fails, and suddenly every decision feels uncertain. The Mercury 8M0082988 Sensor brings back that sense of trust. It's the kin