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ARP 247-4202 Diesel Head Stud Kit | 98.5-23 Cummins


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Each one of these ARP Cummins Head Studs are made from ARP’s proprietary 2000 material, rated at 220,000 PSI tensile strength, complete with insanely strong threads that are rolled after being heat-treated for optimum fatigue strength. Moreover, included in this kit come heat-treated, chromoloy steel 12-point nuts and parallel ground washers, with a black oxide finish for extreme durability. This ensures ample clamping force to prevent the cylinder heads from shifting even after stacking on any turbocharger upgrades, aggressive tuning, and any other extreme modifications. When it comes to installation, these heads are a direct replacement of your factory components and even come standard with broached ends to make the mounting and removal process that much easier. This kit even includes 1/2oz of ARP assembly lubricant to ensure the process runs safely and smoothly.



  • Proprietary ARP 2000 Material
  • Rated At 220,000 PSI Tensile Strength
  • Includes Chrome-Moly Steel 12-Point Nuts
  • Black Oxide Coating For Added Corrosion Resistance
  • Centerless Ground To Ensure They Are Perfectly Concentric
  • Improved Clamping Force Prevents Cylinder Heads From Lifting
  • Broached Stud Ends Install & Make Cylinder Head Removal Easier
  • Heat-Treated Prior To Thread Rolling And Machining For Optimum Fatigue Strenght
  • Shot-Peened To Remove Any Surface Irregularities And Improve Overall External Integrity
  • Hardened Parallel Ground Washers For An Even Load Distrubition And Accurate Torque Readings
  • Comes With 0.5oz Of ARP Assembly Lubricant

Additional information

Weight 9 lbs
Dimensions 11 × 8 × 3 in


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