Fuel Filter Filter Design Spin-On Secondary Fuel/Water Separator Spin-On with Drain Micron Rating 20 micron Height 6 1/16 in Length 6 1/16 in Width 3 11/16 in Outside Dia 3 11/16 in Includes Drain Inside-Out Flow Integral Post Seal Sensor PortThread 1/2-20 I. Gasket