ARP Head Stud Kits 8740 Series 12Point Head Mazda Miata All 1989-2005

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
1999	Mazda	Miata	10th Anniversary
1990 - 2005	Mazda	Miata	Base
1993	Mazda	Miata	LE
2000 - 2005	Mazda	Miata	LS
1994 - 1997	Mazda	Miata	M Edition
2004 - 2005	Mazda	Miata	Mazdaspeed
1991 - 2003	Mazda	Miata	SE
2003	Mazda	Miata	Shinsen
1997	Mazda	Miata	STO