The AirDog WS100 Water Separator and FF100-2 Fuel Filter set is designed for direct replacement in all AirDog systems. These bolt-on filters are made of paper and metal materials, with a gloss finish. The set includes three water separators and three 2 micron fuel filters, suitable for diesel vehicles. The filters are easy to install and come with a 1-year manufacturer warranty. Additionally, the filters meet various reference OE/OEM numbers and interchange part numbers such as Air Dog 2 II 100 150 165 200 GPH. Made in the United States, these filters offer a reliable solution for filtering water and fuel in diesel vehicles.