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Return to Parts List Category : A- Small Block "LA" : Fasteners : Main cap : Studs ARP 140-5401 318-440 WEDGE MAIN STUDS W/ HEX NUTS ARP BRAND, 190,000 PSI TENSILE STRENGTH $90.99 ARP Brand, 190,000 Psi Tensile Strength  Fits 2-Bolt Main, Mopar, V8, B/LA/RB Main Stud Kit (Does not fit Hemi) These ARP main studs are made from 8740 chromemoly steel and have a 190,000 psi tensile-strength rating. They are precision centerless-ground and thread-rolled to Mil-S-8879 specs, with a black oxide finish for corrosion resistance. The kits come complete with hardened washers and high-strength hex nuts.