ARP Head Studs 2000 12pt Head M11 20Valve w/ OUT Audi A4 All 1997-1999

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
1998 - 2000	Audi	A4	Avant
1997 - 2000	Audi	A4	Base
1998 - 2000	Audi	A4 Quattro	Avant
1997 - 2000	Audi	A4 Quattro	Base
1998 - 1999	Volkswagen	Passat	GLX, GLS
1999	Volkswagen	Passat	V6, 1.8T