ARP-154-3603
High Performance Series
high Performance Head Bolts Are Available With A Reduced Wrenching Hex Or 12-point And Wide Area Flanged Head That Eliminates The Need For Valve Train Removal To Facilitate Cylinder Head Retorquing. All High Performance Series Bolts Are 180,000 Psi (which Is 15% Stronger Than Grade 8) And Kits Come Complete With Hardened Parallel- ground Washers.