NGR O-Ring for the adjustment screw on the NGR Type-S BOV. This seal usually breaks when the nut is over-torqued.
This is the O-Ring for the adjustment screw, it is a seal to prevent leaks from the adjustment screw.
It can wear out from people overtightening the nut on the adjustment screw, thus creating a boost leak. To prevent this, make sure to tighten the locknut on the adjustment screw with a 10mm socket by hand. DO NOT OVERTIGHTEN!
We decided to put this up for sale as customers tend to overtighten the locknut, which will cause the o-ring to break. We want to make sure customers can have this part available in case it is needed.