The SF-Filter SK3137 is a high-quality spin-on primary fuel filter designed for standard efficiency filtration. It effectively removes contaminants from fuel, protecting sensitive engine components. This filter features a height of 102 mm, an outer diameter of 80 mm, and an M16 x 1.5 thread. It is a direct equivalent for Caterpillar part number 3261643 and is recommended for use with Caterpillar C4.4, C6.6, and C7.1 engines, as well as a wide range of Caterpillar excavators, loaders, dozers, and other heavy machinery.