ARP Nissan VR38 CA625 Cylinder Head Stud Kit 202-4305

 

ARP Pro Series head studs are the go-to option for every top-tier professional engine builder, and for valid reasons. Their superior 8740 alloy is rated much higher than even "aircraft" quality. Each stud is placed in a rack, and with precise heat-treating to 200,000 psi, full heat penetration is achieved - a process far better than competitors' "basket-dumping" methods. To top it off, every stud is centerless ground for unparalleled concentricity.