Exact match for me OEM 10mm head bolts. Couldn't find these anywhere else.

Good job by everyone

Need different size socket for these bolts than what I have installed on the truck. No idea if what I have is original or not. I only ordered a few as replacement for ones that were looking rounded off. If I had known I definitely would have ordered a set for both valve covers to keep it all the same.

These are 8mm instead of 10mm. On my OBS that's actually perfect for 2 places. 1 on the rear most left side, and 1 under the PCV housing also on the left side. It's a lot easier to get an 8mm socket on the rear bolt than a 10mm, and you can get a ratcheting wrench on the one by the PCV housing. Both of these create a lot less hassle than the little bit from needing to grab both 8mm and 10mm tools.

This is a great quality bolt. Was very pleased with everything about it except my stock 7.3 bolts are a 10mm head and this one is 8mm. Threads, length and fit are a 109% match. I just now have 1 bolt that is a different size socket from the rest.

Dropped one, couldn't find it. This is a perfect replacement.