Carburetor Fuel Inlet Brass Filter Kit Compatible with H-olley 2300, 4150, 4160 & 4500 Series Carburetor, Fits For Carburetor That Uses 7/8in-20 Brass Inlet Fittings. 1Set of Carburetor Fuel Inlet Brass Filter Kit, Kit Includes 2Pcs Bronze Filters, 2Pcs Filter Springs, 2Pcs Filter Seals & 2Pcs Fuel Bowl Inlet Fitting Gaskets.