Description

The IAG Performance 1/2 Inch Head Stud Set is manufactured by ARP and is designed for use on high horsepower Subaru EJ25, FA20, and FA20 DIT engines. Due to the larger size of the head studs, a greater load can be placed on the fasteners, and in turn it aids in preventing cylinder heads from lifting in race applications. The larger size of the head studs requires the case halves to be drilled and tapped. The cylinder heads will also require drilling to accept the larger studs.

Specifications

Compatibility

  • 2002-2014 Subaru Impreza (WRX)
  • 2004-2005 Subaru Forester (XT)
  • 2004-2006 Subaru Baja (Turbo)
  • 2004-2014 Subaru Impreza (WRX STI)
  • 2005 Subaru Forester (XT Premium)
  • 2005 Subaru Legacy (GT Limited)
  • 2005-2006 Saab 9-2X (Aero)
  • 2005-2008 Subaru Legacy (GT)
  • 2005-2008 Subaru Outback (XT)
  • 2005-2009 Subaru Outback (XT Limited)
  • 2006-2007 Subaru Impreza (WRX Limited)
  • 2006-2007 Subaru Impreza (WRX TR)
  • 2006-2009 Subaru Legacy (GT spec.B)
  • 2006-2010 Subaru Forester (XT Limited)
  • 2007-2009 Subaru Legacy (GT Limited)
  • 2008 Subaru Forester (2.5 XT)
  • 2008 Subaru Forester (Sports 2.5 XT)
  • 2008 Subaru Outback (2.5 XT)
  • 2008-2009 Subaru Forester (XT)
  • 2009 Subaru Impreza (WRX Premium)
  • 2009-2010 Subaru Impreza (2.5 GT)
  • 2010 Subaru Impreza (WRX GT)
  • 2010 Subaru Impreza (WRX SE)
  • 2010 Subaru Impreza (WRX STI Special Edition)
  • 2010-2012 Subaru Forester (XT Premium)
  • 2010-2012 Subaru Forester (XT Sports)
  • 2010-2012 Subaru Legacy (2.5GT)
  • 2010-2013 Subaru Legacy (GT)
  • 2011-2012 Subaru Forester (XT Touring)
  • 2011-2014 Subaru Impreza (WRX STI Limited)
  • 2012 Subaru Forester (XT Limited)
  • 2013 Subaru Forester (XT)
  • 2013-2016 Scion FR-S
  • 2013-2020 Subaru BRZ
  • 2014-2018 Subaru Forester
  • 2015-2021 Subaru WRX (STI)
  • 2015-2021 Subaru WRX
  • 2017-2020 Toyota 86

The IAG Performance 1/2 Inch Head Stud Set is manufactured by ARP and is designed for use on high horsepower Subaru EJ25, FA20, and FA20 DIT engines. Due to the larger size of the head studs, a greater load can be placed on the fasteners, and in turn it aids in preventing cylinder heads from lifting in race applications. The larger size of the head studs requires the case halves to be drilled and tapped. The cylinder heads will also require drilling to accept the larger studs.

  • 2002-2014 Subaru Impreza (WRX)
  • 2004-2005 Subaru Forester (XT)
  • 2004-2006 Subaru Baja (Turbo)
  • 2004-2014 Subaru Impreza (WRX STI)
  • 2005 Subaru Forester (XT Premium)
  • 2005 Subaru Legacy (GT Limited)
  • 2005-2006 Saab 9-2X (Aero)
  • 2005-2008 Subaru Legacy (GT)
  • 2005-2008 Subaru Outback (XT)
  • 2005-2009 Subaru Outback (XT Limited)
  • 2006-2007 Subaru Impreza (WRX Limited)
  • 2006-2007 Subaru Impreza (WRX TR)
  • 2006-2009 Subaru Legacy (GT spec.B)
  • 2006-2010 Subaru Forester (XT Limited)
  • 2007-2009 Subaru Legacy (GT Limited)
  • 2008 Subaru Forester (2.5 XT)
  • 2008 Subaru Forester (Sports 2.5 XT)
  • 2008 Subaru Outback (2.5 XT)
  • 2008-2009 Subaru Forester (XT)
  • 2009 Subaru Impreza (WRX Premium)
  • 2009-2010 Subaru Impreza (2.5 GT)
  • 2010 Subaru Impreza (WRX GT)
  • 2010 Subaru Impreza (WRX SE)
  • 2010 Subaru Impreza (WRX STI Special Edition)
  • 2010-2012 Subaru Forester (XT Premium)
  • 2010-2012 Subaru Forester (XT Sports)
  • 2010-2012 Subaru Legacy (2.5GT)
  • 2010-2013 Subaru Legacy (GT)
  • 2011-2012 Subaru Forester (XT Touring)
  • 2011-2014 Subaru Impreza (WRX STI Limited)
  • 2012 Subaru Forester (XT Limited)
  • 2013 Subaru Forester (XT)
  • 2013-2016 Scion FR-S
  • 2013-2020 Subaru BRZ
  • 2014-2018 Subaru Forester
  • 2015-2021 Subaru WRX (STI)
  • 2015-2021 Subaru WRX
  • 2017-2020 Toyota 86

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