Upgraded exhaust studs & nuts.

If you ever had to replace a seized stud out of the s54 head while it’s still on the engine, you probably know what trouble is.
This kit include 18x external torx headed studs + 18x copper nuts . Installing and removing them turns from PITA to piece of cake.
They’re 8mm longer compared to the oem ones, which allows some extra space for work while installing the s54 separated exhaust manifold gaskets.
The middle section restrictor matches the head profile perfectly, letting you have the piece of mind they all are tighten evenly.