They are two different sizes. The one on the carb is like 3/16 and the distributor 1/8. You can get a couple small open end wrenches and measure them. You can either get an adapter and make it look neat or just cram the smaller 1/8 hose over the carb nipple like most people do. I'm not 100% sure on those sizes, but the carb nipple is bigger than the distributor nipple. I said nipple. heh heh heh huh huh huh