The bolts that come with this are not like the OEM 6m hex socket head bolt that require a 5m Allen key. They use a 10m socket so one of the bolts you can't use on bottom of the throttle body because you can't tighten it down all the way because of the throttle body is built so make sure to order yourself either 1 or replace all 4 of them. The new bolt size is 6m x 85mm hex head 12.9 partial thread (not sure if course or fine threading)bolts when you order the throttle body. So when you go to change it out you aren't going crazy to find the bolts that will work near you. I found them on Amazon and eBay.
6m(5m Allen key) x 85mm long 12.9 durability partial thread. Not exactly sure if course or fine threading off the top of my head.
