OEM Part Number: 317081000 3/8" Male NPT Threads (measure about 5/8" in diameter) Plastic Construction Complete Assembly (includes canister with element) 3" Diameter Black Brand new Rolair air compressor intake filter with housing, part number: FC317081000. This is an OEM replacement air filter assembly that includes the canister as well as the element. This filter comes equipped with 3/8" male NPT threads to fit into your Rolair air compressor. This is a plastic housing with a foam element. Specifications: OEM Part Number: FC317081000 3/8" Male NPT Threads (measure about 5/8" in diameter) Plastic Construction Complete Assembly (includes canister with element) 3" Diameter