Replaced when putting an e99 spyder and intercooler on an OBS Powerstroke and actually picked up a couple psi of boost. Must have had a leak somewhere. Fit was good and shipping was fast.

After taking off my y-pipe from the turbo I realized there was NO O-RING!!!!!
I replaced the boots from y pipe to mainfold with the riffraff boots. Went on excellent! Awesome quality boots too.
Next I put some lube on the o ring and tightened down the band.
HUGE DIFFERENCE!!! Much more quiet and more power as well!!! Awesome!!!

Like the title says, Riff Raff always supplies quality parts with fast reliable shipping. Thanks Riff Raff

fit great on my y pipe. It was a little hard to keep in place while sticking the y pipe on. with a little dab of silicone it held into place.

OEM Parts with Riffraff support and prices. What's not to like?

worked just like it should no complaints, thanks riffraff :)

Bought this when doing my boots just in case it was needed. My old one was fine so I didn't change it out. One thing to note was my old one was a square ring.

Easy to install and perfect fit! Nice product

Not much to say about a gasket. It fit perfect and high quality. I would buy it again if needed.