2-5/8 In. BOOST 0-35 PSI LIQUID FILLED PRO-COMPMechanical boost gauges have become the staple in boost pressure monitoring for all types of engines, gasoline, diesel, or otherwise. Ultra precise bourdon tube meter movement ensures accuracy and durability not seen anywhere else in the industry. A simple 1 8" NPT pressure connection requires no electrical hookup for operation. Includes 1 8" NPT fittings and nylon line kit. Traditional incandescent lighting illuminates around the perimeter of the