Brand: Auto Meter Gauges
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The Extreme Environment gauges from Auto Meter are sealed front and rear to keep out the elements. They are designed to withstand wet, dirty, and dusty conditions.  Their super-light construction (60% lighter than Auto Meter Ultra-Lite 2 5/8" mechanical gauges) is ideal for competition use.  
The electric gauges feature a full 270 degree sweep with a precise stepper motor drive for rock-solid needle and fast response time.  The full-dial warning system (developed for NASCAR) lights up the entire dial face with a red backlight to alert you if a problem exists. If the problem gets worse, the red backlight will flash for an unmistakable, attention-grabbing alarm.  
This 2 1/16" electric oil pressure gauge reads from 0 to 120 psi.  The full-dail warning will light up if oil pressure drops below 10 psi and flashes if pressure drops below 7 psi.   
Includes 1/8 NPT pressure sender and 1/4 NPT adapter. Requires 12 volt electrical power supply.  If your vehicle does not have a 12 volt electrical system, an optional 12 Volt Battery Pack and Charger Kit for Extreme Environment Gauges (Part No. AM9217) is available separately.