Installed an intercooler on a 97 OBS with an E99 intake. These and the plenum inserts fIt perfectly. So glad these are around and I didn't have to try and hunt down oem. These are better anyway.

Awsome, fixed my old leaky ones and has moved my mpg from 14 to 18 mpg , very happy with the product so far

These boots are a perfect fit and are thicker and better made than the stock boots!

Once again Riff Raff offers a great product. Excellent fit, thick and durable.

Great product. I wish they included clamps is the only minor down fall. Shipping was fast.

Good product. Knowledgeable people.

I purchased these boots to replace the old, cracked and leaking set of stock orange boots on the E99 spider I'm using on my OBS 7.3. These fit perfect, were a lot more substantial than the stock pieces, and look amazing with my setup (I bought them in blue to match the paint on my IC piping). Kudos, once again, to Clay and the team at Riffraff; you never cease to amaze.

Nice products very thick and kook great with the free swag thanks

Very satisfied with the riffraff boot kit finally no more oil sitting on the top of my motor would definitely recommend anybody with an early 99 to invest in a set of these