Gauge: Fuel Pressure Range:0-30PSI Size: 2 1/16" (52.4mm) Type: Electric/Full Sweep Notes: -Full sweep precision stepper motor movement. -Includes 1/8" NPT Sender. -WHEN INSTALLING THIS PRODUCT ON '98-02 DODGE CUMMINS DIESEL APPLICATIONS, AUTO METER FUEL PRESSURE SNUBBER / RESTRICTOR FITTING #3279 IS REQUIRED