Auto Meter 6537 Ultra-Lite Digital 2-1/16" 0-300 Degree F Digital Water Temperature Gauge Features Auto Meter's E-Z View Digital LED Display System which maximizes readability and minimizes distracting high speed digit changes Includes data acquisition grade solid-state temperature sender, providing unmatched accuracy and durability even in the harshest environments Auto Meters race proven digital stepper motor electric instruments provide unmatched accuracy while keeping hazardous fluids outside of the vehicle Gauge kit includes 1/8 NPT temperature sender, 3/8 and 1/2" NPT adapters, wiring harness, mounting hardware, and detailed instructions for installation 12 and 16 volt compatible, well-suited with nearly every street car or race car electrical system