I bought this for pretty cheap from a seller who told me it was for a 3rd gen. I had my doubts because I know 3rd gens take those flange-style slip ons. I figured I'd take a chance on it given how rare Staintune seems to be for 3rd gen. I used to have a 3rd gen but sold it a long time ago, so I can't test it out. I plan on getting another when one pops up around me, but until then, I could really use your guys' help. Thanks.