AEM Analog Display 52mm Gauges (Metric) Black/White Face Boost Gauge 0-4.1 BAR 30-5137M Now there is an option for those who prefer a traditional analog gauge interface but still want the quality and versatility that is only offered from AEM. AEM's performance analog gauges unite unsurpassed accuracy, speed and control with an easy to read analog interface. Match any interior or gauge cluster theme with the seven selectable backlight colors and two included gauge bezels (black/silver) as well as two included face colors (black/white) for dozens of style combinations sure to compliment any project car. The AEM analog gauges also offer a 0-5v analog output for use with data loggers and virtually any engine management system, such as the AEM EMS or FIC. Features & Notes: Adjustable backlighting via a dial on the back of the gauge Includes black and silver interchangeable bezels 320 degree viewing area for unsurpassed resolution Includes white and black interchangeable faces (unless noted otherwise) PLEASE NOTE: Only one (1) gauge is included in each kit, some pictures show multiple gauges for demonstration purposes only.