AutoMeter 52mm Elite Voltmeter Gauge, 8 18V, Digital Stepper Motor (5683) Fuel Pressure Gauge there are no inherent air DAR 400 160 P there are no inherent air (vacuum boost) leaks through the threads that traditionally a smoke detector would pick up Vehicle Fitment (Build Date): Part Number: Evo 8 Dec 2002 to June 2003 MD979310 (Pictured) Evo 8 July 2003 to July 2004 1000A175 Evo 8 Aug 2004 to July 2005 MD979310 (Pictured) Evo 9 Aug 2005 to Nov 2006 1000A493 An ultra precise Digital Stepper Motor Voltmeter that monitors the health and output of your vehicle's electrical system with accurate readings from 8 18 volts on negative ground systems and yellow) to match visual preferences and visibility conditions