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ARP 2000 Cylinder Head Studs Subaru EJ Series

$303.61

Manufacturer: ARP

Product Information

ARP2000 studs are centerless ground, heat treated prior to thread rolling and machining, and are nominally rated at 220,000 psi tensile strength. These fasteners are designed to exceed the OEM fasteners in strength and durability by delivering a 35% increase in tensile strength. Optimum design enhanced reliability and increased strength are the main attributes of ARP's Pro Series fastener kits.

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. ARP studs are thread rolled after heat-treat, which gives them about 2000% (that’s twenty times) better fatigue strength than those studs that are threaded prior to heat-treat (a very common industry practice). It costs a lot more to do it this way, because it’s tough on tooling, but the results are well worth the extra effort.

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, they are the best on the market today, and the favorite of leading professional engine builders in all forms of racing.

Fits:
EJ Series DOHC Turbo Subaru
 

Product Code: 260-4701