ARP Head Stud/Bolt Kits Are built with quality and longevity in mind. There are no shortcuts to a quality product, and ARP definitely takes pride in their work and their product. There's a reason the top mechanics and Truck Builders rely on ARP. Each and every Stud is placed on a rack and heat treated to 200,000 PSI. Following the heat treatment, each stud is centerless ground to make it as close to perfectly concentric as possible. Because ARP takes such pride in the manufacturing of their products you will find that gaskets and cylinder heads literally glide into position and align perfectly. ARP studs are thread rolled after heat treat, which gives them about 1000% better fatigue strength than studs that are thread rolled prior to heat treat. Always look for ARP Stamped on each stud as your assurance for quality. ARP Head Studs/Bolt Kits are the best on the market and the favorite of top professional engine builders in all forms of racing.
ARP 12mm Headstud Kit - 247-4203
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