2-1/16in. WATER PRESSURE; 0-100 PSI; ULTRA-LITEFrom high banked ovals to Saturday night 1/4 miles, knowing that you've got proper cooling system pressure is critical in any severe service application. AutoMeter's Digital Stepper Motor Water Pressure Gauge utilizes the most advanced technology on the market to deliver accuracy and durability you won't find anywhere else. Our advanced 1/8 NPT solid state pressure transducer (included) provides the best possible measurements with unparalleled resistance to vibration and heat. A direct plug in wiring harness is also included for ease of installation and data logging is available thanks to a .5 - 4.5v analog output. Incandescent Lighting Illuminates Around Perimeter Of Dial 12 And 16V Compatible Incl. 1/8 in. NPT Stainless Steel Pressure Transducer Incl. Wiring Harness Incl. Bulb/Socket Assembly/Red And Green Bulb Covers Incl. Mounting Hardware/Instructions One-Touch Peak Recall Set A Custom Alert Specific To Your Vehicle Digital Stepper Motor Provides Unmatched Accuracy