The Fleetguard FS1291 Fuel Water Separator Filter is a high-quality fuel filter designed for International Series BF13450 and 33232 trucks. With a thread diameter of 1-14 UNF and a diameter of 110.74 mm (4.36 inches), this filter is specifically made for easy installation on the front of the vehicle. The filter is made of durable metal with a rubber gasket, ensuring a secure fit and efficient filtration to keep your fuel clean and free from contaminants. It is interchangeable with other reputable brands such as Donaldson, Parker, and Tecnocar, making it a reliable choice for your vehicle's fuel system.