mork Posted April 18, 2017 Share Posted April 18, 2017 Did a quick search, but couldn't find anything on this. Are ARP head bolts different size tool than stock? Are there any markings to determine if they are indeed genuine? Anyone ever reused a stock set of bolts? I believe they're torque to yield, so have to be replaced? Quote Link to post Share on other sites
AdamB Posted April 18, 2017 Share Posted April 18, 2017 Never known of fake ARP's, just use your brain and don't buy from China. Buy from a reputable source.Tool is different, OEM headbolts use a M9 spline, ARP's are hex usually. You can reuse bolts, but they should be measured for stretch, for the sake of it it's best to replace them. Quote Link to post Share on other sites
mork Posted April 18, 2017 Author Share Posted April 18, 2017 Sorry, written badly. Just wondering if arp bolts have the brand stamped on the heads. And wasn't sure if they were internal or external drives. Quote Link to post Share on other sites
epcashin Posted April 19, 2017 Share Posted April 19, 2017 yes they have arp on top of them or else they have dots on top of them standard bolts will have nothing Quote Link to post Share on other sites
gorganl2000 Posted April 19, 2017 Share Posted April 19, 2017 yeah,,,i've reused and seen stock headbolts reused by others without issues. Quote Link to post Share on other sites
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