why would a new set of headers become so hot that the steering shaft cover melts?

Asked by Aug 04, 2014 at 02:43 PM about the 1997 Chevrolet Suburban C2500

Question type: Maintenance & Repair

we had a cracked exhaust manifold so we opted to have it replaced with a set of headers.  We have noticed that the steering shaft cover is starting to melt due to heat.  Why would the headers be that hot and is there something that maybe the mechanic missed.  Supposably the headers are with air injection

2 Answers

24,445

The headers may need to be wrapped with heat wrap.

11,205

Headers will naturally run hotter than your stock exhaust manifolds due to the thinner gauged tubing used. They can't absorb the heat as well as the heavy castings. Also it's not uncommon to run into problems like you mentioned with melting parts under the hood. Like any aftermarket part, other mods may be necessary to make them work/fit. I would follow Mikes recommendation and locate some wrap. I've had to take the plastic covers off in the past because of this problem.

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