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Main Stud Kit by ARP


ARP main stud kits help eliminate main cap walk/fretting and protect the threads in your engine block. They include studs made from 8740 chromoly steel and heat-treated in-house to 190,000 psi tensile-strength rating. The precision J-form threads are rolled after heat-treat for much stronger threads than the competition. Kits come complete with hardened parallel-ground washers and high-quality nuts. Add confidence in the strength of your engine build with the ARP main stud kit designed for your application.



  • Main Bolt Style: 2-bolt
  • Fastener Style: Stud
  • Fastener Nut Style: Standard hex
  • Works with Windage Tray: No
  • Fastener Tensile Strength (psi): 190,000 psi
  • Nuts Included: Yes
  • Washers Included: Yes



  • Help eliminate main cap walk/fretting
  • Protect the threads in your engine block
  • Made from 8740 chromoly steel
  • Heat-treated in-house to 190,000 psi tensile-strength rating



  • 2016 - 2019 BMW 340i
  • 2016 - 2019 BMW 440i
  • 2020 Toyota Supra 30T
  • BMW 540i
  • BMW 640i
  • BMW 740i
  • BMW X3
  • BMW M140i
  • BMW X4


What's In The Box?

  • 12 - Studs



  • Manufacturers Standard Warranty

ARP Main Studs Toyota 3.0L (B58) I6 Supra 12pt ARP2000


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