Range 0 - 30" HG. One high accuracy vacuum sensor included. Designed to monitor the condition of your fuel filters. Programmable "Change Filter" light will alert you when to change your filter. Once the new filter has been installed, the gauge will re-set itself. Red, Blue, or Green LED display. Mounts in a standard 2-1/16" hole. Limited lifetime manufacturer's warranty. Made in the USA.  

NOTE: This gauge fits Peterbilt and Kenworth models; 2005 and older. Also fits Freightliner, International, Mack, Western Star, and Volvo models with 2-1/16" gauges on the dash.