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. This makes them far superior to standard OEM fasteners in terms of durability, and fully capable of handling the extra stress of high-combustion engines.

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ARP Bolts, 12-Point Head, Stainless 300, Polished, 7/16 in.-20 RH Thread, 2.500 in. UHL, Set of 5

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ARP Nut, Hex, Carbon Steel, Cadmium/Chromate, Self Locking, 3/8 in.-24 Thread, Each

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ARP Cylinder Head Stud, Pro-Series, Hex Head, For Chrysler 4 & 6 Cyl, Hemi Iron & aluminum blocks w/ standard Hemi Heads/ Indy hemi Heads, Kit

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