HQRP Air Filter Element Combo for Honda EG3500 EG3500X EG3500XK1 EN3500 EZ3500 Generator/Honda FR800 Rottotiller Coaster HQRP&reg; Air Filter Element Dual plus HQRP&reg; Coaster; Replaces Honda 17210-ZE2-505, 17210-ZE2-515, 17210-ZE2-822, 17210-ZE2-821 Air Filter; Fits Honda GX240, GX270 series Small Engines (NOT ALL); Pre-filter included; Compatible with Original filter; 2 weeks DOA replacement warranty!