The HP shim technology increases clampload around the combustion chamber, thereby increasing the sealability of the head gasket around the open deck block.

This Part Fits:

Year	Make	Model	Submodel
1993-1996	Honda	Prelude	VTEC
2004-2006	Subaru	Baja	Turbo
2008	Subaru	Forester	Sports 2.5 XT
2009-2013	Subaru	Forester	X Limited
2009-2013	Subaru	Forester	X Premium
2004-2005	Subaru	Forester	XT
2007,2009-2010	Subaru	Forester	XT Limited
2003-2012	Subaru	Impreza	WRX
2006-2007,2010-2014	Subaru	Impreza	WRX Limited
2009-2014	Subaru	Impreza	WRX Premium
2004-2014	Subaru	Impreza	WRX STI
2007,2011-2014	Subaru	Impreza	WRX STI Limited
2010	Subaru	Impreza	WRX STI Special Edition
2006-2007	Subaru	Impreza	WRX TR
2003-2006	Subaru	Legacy	GT
2005,2007-2009	Subaru	Legacy	GT Limited
2006-2009	Subaru	Legacy	GT spec.B
2005-2009	Subaru	Outback	XT Limited