ARP 250-4203 Diesel Head Stud Kit Ford Power Stroke 6.4L

High-Strength ARP 2000 Alloy ConstructionRated At 220,000 Psi Tensile StrengthIncludes Chrome Moly Steel 12-Point NutsBlack Oxide Coating For Added Corrosion ResistanceCenterless Ground To Ensure They Are Perfectly ConcentricImproved Clamping Force Prevents Cylinder Heads From LiftingBroached Stud Ends Install & Make Cylinder Head Removal EasierHeat-Treated Prior To Thread Rolling And Machining For Optimum Fatigue StrengthShot-Peened To Remove Any Surface Irregularities And Improve Overall External IntegrityHardened Parallel Ground Washers For An Even Load Distribution And Accurate Torque ReadingsComes With 0.5oz Of ARP Fastener Assembly LubricantXDP Thread Cleaning Chaser (Sold Separately, See Related Items): Purchase the XDP Thread Cleaning Chaser XD40127TC (for head studs) & XD40128TC (for inner row bolts) as an add-on to this kit. Using the Thread Cleaning Chasers ensures that you are able to properly clean the threads in your engine block before you begin installation and torquing of the head studs. Clean threads are critical to provide you with accurate torque readings during your engine build or head gasket repair.