Zeaauto NEW 1L Carburetor Carb FITS Honda GX610 18 HP & GX620 20 HP V Twin FITS Honda GX610 18 HP & GX620 20 HP V Twin GX610 / 620K1, R1 and U1 series gas engines 100% New and good quality. Direct Aftermarket Replacement, No Modification Required.. Replaces OEM Part # 16100-ZJ0-871 16100-ZJ0-872 16100-ZJ1-872