Just say no to OEM Header Studs when you're doing your Longtube Installation on your Coyote-Powered Mustang or F150! Instead, upgrade to these stainless steel, 10.9 grade, high-strength shouldered Header Bolts! Sold only in sets of (16) so you can do both sides without issue.
*NOTE: Some installers find it easier to leave (1) stud in place to start the installation of the bolts, and some installers will even ultimately leave that single stud in place. We've not experienced any issues with that, other than clearance related issues on the driver's side against the AC Compressor/Lines.
