NAPA Fuel Filter 3394Part No. 3394 Type FUEL FILTER Brand NAPGLD Unit of Measure EACH Description NAPA Fuel Filter Warranty Service Interval Outside Diameter 82mm Thread M20 x 1. 5 Type Spin On Height 103mm Outer Diameter Top 82. 1mm Thread Inlet M20 x 1. 5 Features Fabricated to operate at OE performance expectatioons NAPA Fuel Filters filter out even the smallest particles of rust, scale, dirt, and water that can compromise the Life and Performance of an Engine NAPA