The Caterpillar 3261643 is a genuine OEM water separator filter designed to protect your engine's fuel system from water contamination. Featuring standard efficiency and a radial seal, this primary filter utilizes cellulose media to ensure clean fuel delivery, enhancing engine longevity and performance. With an overall height of 203.2 mm and a diameter of 83.82 mm, it is engineered for precise fit and reliable operation across a wide range of Caterpillar excavators, wheel loaders, motor graders, and other heavy equipment.