• IAG Performance / ARP 14mm Head Stud Set Most Subaru Models | IAG - ENG - 1711 - JDMusclePerformance HardwareIAG-ENG-1711
  • IAG Performance / ARP 14mm Head Stud Set Most Subaru Models | IAG - ENG - 1711 - JDMusclePerformance HardwareIAG-ENG-1711

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IAG / ARP 14mm Head Stud Set

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Pay over time available · Est. $18.75/payment
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Illustrative estimate only, not a financing quote or guaranteed offer. Actual payments, frequency and terms vary by provider and eligibility. Taxes, shipping and add-ons are excluded.

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IAG Performance IAG / ARP 14mm Head Stud Set
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Other performance hardware for 15-21 WRX

Fitment

Please Note: Requires drilling and tapping the engine case, splitting the locating dowels, and enlarging the cylinder head stud holes for 14mm clearance. Use head gaskets with 14mm stud provisions or drill the head gaskets to clear the larger 14mm head studs.
  • 2004-2008 Subaru | Forester XT
  • 2008–2021 Subaru | WRX
  • 2008–2021 Subaru | WRX STI
  • 2005-2009 Subaru | Legacy GT

Description

The IAG / ARP 14mm Head Stud Set (Part# IAG-ENG-1711) is designed for use on high horsepower Subaru engines. The larger size of the stud increases its load capacity, which helps to prevent the cylinder head from lifting and creating head gasket failures.

  • Set Includes: (x12) ARP2000 14mm x 1.5mm Head Studs, (x12) ARP Washers, (x12) ARP Nuts, (x1) ARP Fastener Assembly Lube
  • Install Requirements: use head gaskets with 14mm stud provisions or drill head gaskets to clear the larger 14mm head studs for fitment
  • Install Requirements: splitting the OEM locating dowels
  • Install Requirements: drilling and tapping the engine case
  • Install Requirements: drilling out the cylinder head stud holes for 14mm stud clearance

Q: What is included in the set?
A: The set includes twelve ARP2000 14mm x 1.5mm head studs, twelve ARP washers, twelve ARP nuts and one ARP fastener assembly lube.

Q: Is this a direct bolt-on installation?
A: No. The oversized head studs require drilling and tapping the case, splitting the locating dowels, and enlarging the cylinder head stud hole clearances to accept the studs.

Q: Why use 14mm head studs?
A: The larger stud size increases load capacity, which helps prevent the cylinder head from lifting and creating head gasket failures on high horsepower engines.

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