Enhance fuel purity with Donaldson Twist&Drain Water Separator Fuel filter, SAE J1985 approved. The Spin-On design, 4.22-inch diameter, and 6.81-inch length, equipped with 4-micron, 99% efficiency Cellulose and Meltblown media, and 7/8-14 UN thread size, deliver reliable filtration for #1 or #2 Diesel, Kerosene, Biodiesel up to B20, and JP8.