Donaldson Twist&Drain Water Separator Fuel filter, ISO 19438 approved, features a 3.66-inch outside diameter and 7.61-inch length. With a Spin-On design, 4-micron rating (99% efficiency), cellulose media type, and 1-14 UN thread size, it ensures precise filtration for #1 or #2 Diesel, Kerosene, Biodiesel up to B20, and JP8.