Advanced Filtration Systems Inc.

Advanced Filtration Systems Inc. (AFSI) designs and manufactures high-efficiency liquid filters, specializing in lube, fuel, and hydraulic applications used in Caterpillar machinery worldwide. Its products support oil filtration, water separation, and engine and hydraulic systems. The company uses computer-integrated manufacturing and automated production to make filters focused on component longevity and suitable for heavy-duty conditions. Founded as a Caterpillar–Donaldson joint venture, AFSI serves global markets.