It fits perfectly, no trouble or struggle to get it on at all. They talk about it being made of a "proprietary material" but it's nothing more than white vinyl. I was hoping it would be made of the same layered material that the 8mm intake manifold spacers were made of. At the end of the day this probably won't make a ton of difference especially since the throttle body has a coolant line running to it to keep it from freezing when it's super cold out which has the unfortunate effect of heating the entire throttle body, but if you just loop the hoses for it you can easily eliminate that problem. Overall 4 stars for good fit but unimpressive finish.
