Tips for Choosing and Installing Header Fasteners


You’ve got questions. We’ve got answers—Mondays, when the Summit Racing tech department tackles your automotive-related conundrums. This week in our Monday Mailbag, we’re debating header bolts vs. header studs.

Q: I am installing a new set of headers, and I’m trying decide on which hardware to use. Would you typically recommend header bolts, or should I step up to a set of header studs? Are there advantages to using one type of fastener over the other? What other tips do you have for choosing header bolts or studs?

A: First, we’d recommend you check out this earlier post on bolts versus studs. While the video post coverscylinder head studs and bolts, many of the same principles apply to your header fasteners. However, with header fasteners, you must pay close attention to the particular design of your headers. Specifically, access to studs can be a problem when header tubes are bent closely to the flange. In these cases, the protrusion of the stud may actually hit the tubing, making it impossible to access the fastener altogether. For this reason, header bolts are often the most optimal solution.  READ MORE