ARP fasteners Head Bolt Set, Hex Head AR134-3609 Product:fits GM LS Series (2003 & Earlier) 5/8" (16mm) Flange Inside Diameter

5/8" (16mm) Flange Inside Diameter

2-Bolt Main Hex Headfits SB Chev With Large Journal

670" OAL (12 Pack)

1mm or 7/16"(-4 100 Series or -6 200 series)

1 litre / 37oz capacity

ARP fasteners Head Bolt Set, Hex Head AR134-3609 Product:fits GM LS Series (2003 & Earlier) 5/8" (16mm) Flange Inside DiameterHead Bolt Set, Hex Headfits GM LS Series (2003 & Earlier) Brand: ARP Part Number: AR134 3609 Description: 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