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ARP Pro series connecting rod bolts are precision CNC-machined to exacting specifications and designed for optimum reliability. They are heat-treated and threads are rolled to provide up to ten times more fatigue strength.
Pro series cylinder head studs from ARP are cold-forged to ensure molecular integrity. They are heat-treated prior to thread rolling and machining and are rated at a whopping 220,000 psi.
The studs are designed with a radiused head to position the bellhousing and accept nuts without the fear of cross-threading. There are many important reasons to use ARP main stud kits,
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