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    ARP Pro Series Cylinder Head Stud Kits - Nissan VR38 CA625
    Purchase ARP Pro Series Cylinder Head Stud Kits - Nissan VR38 CA625

    ARP Pro Series Cylinder Head Stud Kits - Nissan VR38 CA625

    Part Number: ARP-202-4305
    $966.15
    MSRP: $1,207.68

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    Description

    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, theres 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. Its 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 wont happen with inferior quality head studs. 

    ARP studs are thread rolled after heat-treat, which gives them about 1000% (thats ten 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 its tough on tooling, but the results are well worth the extra effort.
    Brand:ARP
    MPN:202-4305
    MAKE:Nissan
    MODEL:GT-R R35
    YEAR:2009+