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ARP Head Studs 02-14 WRX / 04-17 STI ARP Main / Case Bolt Kit 02-14 WRX / 04-17 STI ARP 625 Plus Custom Age Head Stud Kit 02-14 WRX / 04-20 STI
Fits most EJ20 / EJ25 Turbo Motors Fits EJ20/EJ25 Engines.
  • We've used these up to 700awhp