Header Bolt leaking, Again

[NHCharger]

My 71 Charger with a 383, has a set of Hedman Headers. I have water leaking through one bolt  on the drivers side. I sealed it a few years ago but it's starting to leak again. What are you guys using to prevent this problem?

[8WHEELER]

There are several thread sealants out there like liquid pipe tape that will work if you let it sit over night so it will dry. My problem was worse I have two of those holes that have Heli coils in them what a pain, the last time I put headers on I used this Mopar sealant that is kind of a purple color that practical seals anything and sure enough it worked, my friend that worked at Chrysler gave me some but I have never seen it for sale from Chrysler.

Dan

[Silver R/T]

also its preferred to use studs instead of bolts to help with leaks, including exhaust leaks too

[General_01]

I just use the black High-Temp silicone sealant.

[Ghoste]

Most of the time, I don't put anything on mine.  They haven't leaked yet but sooner or later it'll happen.  When I remember to do it, I just use Loctite.