ARP 625+ Custom Age Headstuds for 2.0/2.3L Ecoboost Engines (Focus ST, Focus RS, Ecoboost Mustang) Raptor Heavy-duty CNC center adjuster

Heavy-duty CNC center adjuster

While this may not trip a Check Engine Light

Installation errors

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ARP 625+ Custom Age Headstuds for 2.0/2.3L Ecoboost Engines (Focus ST, Focus RS, Ecoboost Mustang) Raptor Heavy-duty CNC center adjusterThese studs have an even higher UTS (closer to the 280 ksi limit of the material) than the previous L19 H11 offerings and have the added benefit of better corrosion resistance. We also upgraded the nuts in this head stud package to a heat treated version which have a lower failure rate when paired with an equally heat treated stud. The best part about the new 625+ studs is that we are able to keep the price the same. Our 10mm head stud kit comes with