ARP Main Bolt Kit 1/2-13 Thread 3.50in 8740 Chromoly Bolts Set of 5

ARP Main Bolt Kit — 1/2-13 Thread, 3.50" 8740 Chromoly (Set of 5) High-strength main bolts engineered for demanding engine builds. ARP's 8740 chromoly construction and precision manufacturing deliver reliable clamping force and long-term durability for high-performance and racing applications. Thread Size: 1/2-13 Length: 3.50 in (measured from under head to end) Material: 8740 chromoly steel for superior tensile strength Quantity: Set of 5 bolts Finish: Black oxide or plated finish (model dependent) for corrosion resistance Ideal for main cap retention in high-horsepower engines, these ARP bolts maintain clamp load under extreme heat and repeated torque cycles. Precision threads and controlled stretch ensure consistent torque-to-yield performance when installed per ARP specifications. Why choose ARP main bolts? Proven race pedigree, exacting tolerances, and materials optimized for maximum fatigue life — essential upgrades for rebuilt, stroked, or high-boost engines.