Header Bolts, Wedge Locking, Hex Head, Steel, Black Oxide, 3/8-16 in. Thread, 1 in. UHL, Chevy, Set of 12
Underhead Length (in):
Sold as a set of 12.
Proform self-locking wedge header bolts get a grip on your headers that won't let go—until you're ready! These permanently assembled bolts feature special washers with super-hardened serrated teeth that, when torqued to 28 ft.-lbs., bite into and grab the bottom of the bolt head and the top surface of the header. Any bolt-loosening rotation is blocked by the wedge-locking action created by the washers' interfacing cams; but what's really impressive is that engine vibration—the enemy—increases the tension, making them even more secure! They are re-useable and you can count on them to not fail. Proform self-locking wedge header bolts put an end to the constant tightening for a leak-free, headache-free future