Gauge Series Features: • Black face gauge with magnified tinted lens • Black trim ring with black housing • Red illuminated needle with full sweep • Electronic Gauges has Opening Sweep Movement • 7 color LED illumination number glow and color recall technology (Gauge will return to previous color when vehicle is turned off) • Fast and slow automatic color changing modes • Gauge visor • Mounting and Installation hardware • Instructions • 2 1/6 in gauge or 52 mm in diameter

Air / Fuel Ratio Gauge Includes: • All mounting hardware • Gauge Visor • Detailed installation instructions • Reads: Lean to Rich • Electrical Gauge • Free Tech Support • 12 month limited warranty

This Air to Fuel ratio gauge is one of the most important gauges that are needed when modifying your car. Air/Fuel ratio gauges properly measure the lean to rich mixture of the engine. There are many different reasons that cause an engine to run rich or lean, and with this gauge you can accurately determine the proper mixture of your engine. It also measures the presence of oxygen in the exhaust and it connects directly to your narrow oxygen sensor in your car.