Mercury - Fuel Level Gauge E-F Fuel Monitoring Black Face Chrome Bezel 79-8M6020005. OverviewThis E-F fuel gauge gives you a clear read on what's left in the tank without bouncing around every time the boat moves. The needle settles in with a smooth swing, so you're not guessing whether you've got enough for the run back. On the water, it becomes one of those quick, natural checks you make without thinking-glance, note it, and keep going. It's a simple, clean gauge that fits right into everyday