2023 ARP Catalog

108 WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov. s l California Residents WARNING: Cancer www.P65Warnings.ca.gov. As the crankshaft flexes and twists, the harmonic damper absorbs incredible amounts of kinetic energy. To ensure that the damper is locked in position, ARP has developed these ultra strong 190,000 psi bolts that let you exert maximum clamping force. Special features include 1/4˝ thick, wide area washer and an extra tall 12-point head that accepts a deep socket and eliminates the worry of stripping the head. Harmonic Damper Bolt Kits Application UHL Thread Size Socket Size Part No. BUICK All V6 & V8 1 300 3/4-16 13/16 120-2501 l CHEVROLET Small block 2 470 7/16-20 5/8 134-2501 l Small block 2 470 7/16-20 13/16 234-2501 l Small block 2 470 7/16-20 1-1/16 234-2502 l Gen III/IV LS Series small block (except LS7) 4 325 M16 x 2 0 1-1/16 234-2503 l Gen IV 7 0L (LS7) & GEN V 6 2L (LT1) small block 5 185 M16 x 2 0 1-1/16 234-2504 l CHEVROLET Big block 1 550 1/2-20 5/8 135-2501 l Big block 1 550 1/2-20 13/16 235-2501 l Big block 1 550 1/2-20 1-1/16 235-2502 l ENGINE COMPONENTS

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