ARP Head Stud Kit Undercut Studs 12pt Head Porsche 911 Base 2000-2006

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure 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 stud 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 studs are manufactured to such exacting tolerances, 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

Vehicle Fitments:

Year	Make	Model	Submodel
2004	Porsche	911	40th Anniversary Edition
2000 - 2006	Porsche	911	Carrera 4, Carrera
2002 - 2006	Porsche	911	Carrera 4S
2005 - 2006	Porsche	911	Carrera S
2001 - 2005	Porsche	911	GT3, Turbo
2002 - 2005	Porsche	911	Targa, GT2
2005	Porsche	911	Turbo S