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the $20 catch can cannot be bought as a whole set... It is a few parts from any auto parts store, or even home depot. You need a air compressor filter, a few feet of rubber hose, four screw clamps, and 2 brass male barbs... I would suggest looking through the forum and find the post that talks about it... There are quite a few posts on this topic. Good luck with it, and welcome to the forum.