I just got my headers on and ended up replacing nearly all the studs, and all of the nuts. The studs are 7mm x 39mm. Thread pitch is 7mm x 1.00, if you need to chase the head or run a die over your old studs.


I didn't use anything on the studs or nuts. Like E39 said, the nuts are oblong opening locking type. FCP has the best cost on studs, if you can wait.

__________________
2001 E53 3.0 5pd