Range is 0 - 6000 RPM
Designed to work with your existing MAG Sensor (must be on the flywheel).
Easy to Install & calibrate . The gauge has an "Over Rev Warning" light that can be programmed to light when the engine reaches the set point. Mounting 3 1/8" or 3 3/8" Hole. Only available for pre 2006 Peterbilt models.