KDD 6.0 Powerstroke O-Ring Heads - Gaskets & ARP Head Stud Bundle

KDD 6.0 Powerstroke O-Ring Cylinder Heads - Performance Bundle Two Week Expected Lead Time on Bundles Cylinder Heads Feature: Includes KDD O-Ringed Heads, Mahle or Ford complete top end gasket set, and ARP Head studs Choose between 18mm or 20mm cylinder heads and 2000 series or 625+ series ARP head studs Track Tested, Proprietary O-Ring setup 32 Tungsten Carbide hardened valve seat inserts to prevent cracking 32 press in iron matrix valve guides, honed to size for superior lubrication retention and ultimate longevity Upgraded heavy duty casting, thicker than OE Pressure tested and vacuum checked Blueprinted to proprietary valvetrain geometry, to alter valve height and valve recession for maximum reliability and longevity New USA made high quality valve springs, retainers, locks, valve stem seals, freeze plugs, glow plug sleeves and injector sleeves Valve spring pressure is tested and balanced ensure consistent spring pressure across all valves The same industry leading O-ring desig