ARP Pro Series Head Stud Kit - Honda D16Z 1988-1995 (12 Point Nuts)

For openers, ARP uses a premium grade 8740 alloy that is rated far superior to “aircraft” quality. Then, each ARP Pro Series Head Stud Kit is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure that ARP incorporates into each ARP Pro Series Head Stud Kit ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.

Following heat-treat, each ARP Pro Series Head Stud Kit is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It’s important to note that lesser quality studs are not even centerless ground – the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP Pro Series Head Stud Kits are manufactured to such exacting tolerances for the Honda D16Z, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned – something that won’t happen with inferior quality head studs.

The ARP Pro Series Head Stud Kit’s premium quality heat-treated 8740 chrome moly steel head stud kits are available for most every domestic and import applications such as the Honda D16Z. You won’t find a better quality stud on the market from any other source. Look for ARP stamped on each stud as your assurance of quality. Clearly, ARP Pro Series Head Stud Kits are the best on the market today, and the favorite of leading professional Honda D16Z engine builders in all forms of racing.