Water Temperature Gauge - Mechanical. Function: Analog; Gauge Measures: Temperature; Gauge Range: 130 - 280 deg F/60 - 140 deg C; Liquid Filled: No; Sending Unit Included: Yes; Sensor Type: Temperature. Backlit for clear visibility, Dorman's Engine Coolant Temperature Gauge features a sleek black face with crisp white marks, green and red ?safe zone? indication, and a red needle. It provides at-a-glance monitoring of the coolant, oil, or automatic transmission fluid temperatures to help prevent overheating and ensure a long engine life. The Gauge is available with an adjustable tilt tube for optimal alignment with the driver's line of sight.