ARP Head Stud Kit Custom 625+ Series Subaru Baja All 2004-2006

It is for good reason that virtually every top professional engine builder relies on ARP Pro Series head studs for their all-out competition powerplants. Simply stated, there's not a better stud setup on the market today. For openers, ARP uses a premium grade 8740 alloy that is rated far superior to aircraft quality. Each stud is placed vertically in special racks and precisely heat-treated to 200,000 psi. This procedure ensures complete heat penetration and the results are far superior to those lesser quality studs from other manufacturers who just dump pieces in a basket and hope for the best.

Following heat-treat, each stud is centerless ground to make it as close to perfectly concentric as possible. This procedure involves about ten very slight cuts and results in an exceptionally straight part. It's important to note that lesser quality studs are not even centerless ground the material is thread rolled in bar stock form (mostly before heat-treat, when the material is easier to machine). Because ARP studs are manufactured to such exacting tolerances, you will note that gaskets and cylinder heads literally glide into position and are perfectly aligned something that won't happen with inferior quality head studs

Vehicle Fitments:

Year	Make	Model	Submodel
2006	Saab	9-2X	2.5i
2005 - 2006	Saab	9-2X	Aero
2005	Saab	9-2X	Linear
2004 - 2006	Subaru	Baja	Turbo, Sport
2008	Subaru	Forester	2.5 XS, Sports 2.5 XT, 2.5 XT, 2.5 X, Anniversary Edition, Sports 2.5 X, 2.5 XS Premium
1998	Subaru	Forester	L, Base, S
2004 - 2013	Subaru	Forester	X
2013	Subaru	Forester	X Convenience
2006 - 2008	Subaru	Forester	X L.L. Bean Edition
2009 - 2013	Subaru	Forester	X Touring, X Limited, X Premium
2004 - 2012	Subaru	Forester	XS
2005	Subaru	Forester	XS L.L. Bean Edition
2007 - 2012	Subaru	Forester	XSL
2004 - 2009	Subaru	Forester	XT
2006 - 2013	Subaru	Forester	XT Limited
2005 - 2013	Subaru	Forester	XT Premium
2010 - 2012	Subaru	Forester	XT Sports
2011 - 2013	Subaru	Forester	XT Touring
2008	Subaru	Impreza	2.0R
2009 - 2010	Subaru	Impreza	2.5 GT
2006 - 2011	Subaru	Impreza	2.5i
2010 - 2011	Subaru	Impreza	2.5i Premium
2014	Subaru	Impreza	I Limited
2013 - 2014	Subaru	Impreza	i, I Sport
1998	Subaru	Impreza	L
2012 - 2014	Subaru	Impreza	Limited, Base, Premium, Sport Limited, Sport Premium, Touring
1998 - 2004	Subaru	Impreza	Outback
2005 - 2011	Subaru	Impreza	Outback Sport
2009 - 2012	Subaru	Impreza	R
1998 - 2005	Subaru	Impreza	RS
2008 - 2014	Subaru	Impreza	Sport
2002 - 2004	Subaru	Impreza	TS
2002 - 2014	Subaru	Impreza	WRX
2006 - 2014	Subaru	Impreza	WRX Limited
2009 - 2014	Subaru	Impreza	WRX Premium
2010	Subaru	Impreza	WRX SE, 2.5i Limited, WRX GT, WRX STI Special Edition
2004 - 2014	Subaru	Impreza	WRX STI
2007 - 2014	Subaru	Impreza	WRX STI Limited
2006 - 2007	Subaru	Impreza	WRX TR
2011	Subaru	Impreza	XV
2009	Subaru	Legacy	2.0R, 3.0 R Premier, 3.0 R
2006 - 2012	Subaru	Legacy	2.5i Limited, 2.5i
2007 - 2009	Subaru	Legacy	2.5i Special Edition
2009 - 2012	Subaru	Legacy	2.5i Touring, Base
2008 - 2009	Subaru	Legacy	3.0 R Limited
2008	Subaru	Legacy	3.0, 2.0, Touring
2010 - 2012	Subaru	Legacy	3.6R Premium, 3.6R Limited, 3.6R, 2.5GT, 2.5i Premium, Sport
1999 - 2012	Subaru	Legacy	GT
2005 - 2009	Subaru	Legacy	GT Limited
2006 - 2009	Subaru	Legacy	GT spec.B
2005	Subaru	Legacy	i
1999	Subaru	Legacy	L, SUS 30th Anniversary, Outback Limited, Brighton, Outback, L 30th Anniversary, Limited 30th Anniversary
2005 - 2008	Subaru	Legacy	Limited
2007	Subaru	Outback	2.5i Basic
2008	Subaru	Outback	2.5i Limited L.L. Bean Edition, Base, 2.5i L.L. Bean Edition, 3.0 R, Premier, Touring, 2.5 XT
2006 - 2009	Subaru	Outback	2.5i Limited, 2.5i
2009	Subaru	Outback	3.0 R Premier, 2.5i Special Edition, 3.0 R Limited
2005 - 2006	Subaru	Outback	R
2006	Subaru	Outback	R VDC Limited
2005	Subaru	Outback	VDC Limited, i
2005 - 2009	Subaru	Outback	XT Limited
2005 - 2008	Subaru	Outback	XT, R L.L. Bean Edition, Limited
2015	Subaru	WRX STI	Launch Edition
2015 - 2017	Subaru	WRX STI	Limited, Base
2016	Subaru	WRX STI	Series.HyperBlue
2017	Subaru	WRX STI	Sport, Sport-tech