Mercury – Water Temperature Gauge C–H (120–240°F) | Cooling System Monitoring | White Face | Black Bezel | 79-8M6020058Mercury Water Temperature Gauge CH (120240F) Cooling System Monitoring White Face Black Bezel 79 8M6020058 OverviewThis 120240F water temperature gauge gives you a steady sense of how warm the engines running without the needle jumping every time the boat shifts. The sweep is smooth enough that small changes are easy to notice, which helps when youre running skinny water or pushing through chop. Out on the water, it feels like one of those quiet