Mercury – Fuel Level Gauge | Black Face | 2-1/8" (52 mm) | 79-8M0052844Mercury Fuel Level Gauge Black Face 2 1 8" (52 mm) 79 8M0052844 Overview The Mercury Fuel Level Gauge (79 8M0052844) gives you a clear, accurate view of your remaining fuel supply right from the dash. Designed with a black face, crisp white markings, and a glass lens, its easy to read in bright sunlight or low light. It fits a standard 2 1 8" (52 mm) gauge hole and works with SmartCraft equipped systems when compatible fuel level sensors are