Designed for the absolute harshest environments, the AutoMeter Extreme Environment series gauges provide the very best in waterproof sealing. Engines dont like high water temperatures, Heat is the enemy of performance and reliability. Keep tabs on your temps with the most accurate, quickest responding water temperature gauge on the market. AutoMeters advanced 18 NPT temperature transducer is included as well as a direct plug in wiring harness for ease of installation. Preconfigured warning points change the gauge's LED illumination from white to red, allowing you to concentrate on the work at hand or taking the checkered flag.