Are you talking about the billet part that bolts on the carb for the air filter? It's only $9. I've seen guys get creative and use old lids and other items instead. If you need the whole kit, you could probably buy it separately. You can buy everything in the kit for around $30. That wouldn't include shipping, but that's cheaper than $40. Look through the motor threads. There is a guy on here that uses a piece of PVC to make the adapter to hold the air filter on.