Description
These fittings are designed to be used with Professional Products fuel filters (or any other suitable application) and are sold in pairs. Choose the adapter fittings you need to go with the filter you have selected. Note that Professional Products EFI filters use 1/4-NPT fittings, all the street filters and the 10100 use 3/8-NPT fittings and all other filters use 1/2-NPT fittings.