🔩 High-Quality ARP 100-1110 1001110 Header Bolts: Hex Style Heads, Chrome Moly Steel, Black Oxide Finish - Set of 16 Review

The bolt heads that came with my new headers were too big and I couldn't fit sockets or sockets on them. It worked. The 5/16 head is right next to the exhaust pipe.

They fit perfectly on my 1986 k10 which I have fitted new plugs to. A small hex is a must for the header and makes installation very easy. The screws are good price, simple packaging and now there are extra screws.

We need screws to solve three common problems: aluminum heads, thick flanges and gaskets, and large tubes that impede key access. 5/16 sockets are a significant improvement on the key gap problem. Wiha Tool sells a 5/16 x 1/4 box that drives all 16 screws with an extra bend in the handle. The extended bolt length provides enough thread in the aluminum to prevent thread pulling, even with thick washers and 5/16" flanges. The only remaining problem is that the extra length sometimes makes it…

I bought these for very tight spaces where a 3/8 size would fit but the wrench still had tight access. The screws appear to be of good quality and provide the extra key room I was hoping for. Disadvantages: (1) - Pay attention to their length. They are longer than the head bolts they replaced, which bothered me as I was afraid they would fail before tightening. They have arrived well for me. If you have thin manifold flanges, they may be too long. (2) - Because the screws are very long, when…