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
2011-2014	Ford	F-150	FX2
2011-2014	Ford	F-150	FX4
2011-2015	Ford	F-150	King Ranch
2011-2015	Ford	F-150	Lariat
2013-2014	Ford	F-150	Limited
2011-2015	Ford	F-150	Platinum
2011-2014	Ford	F-150	STX
2011-2015	Ford	F-150	XLT
2015-2019	Ford	Mustang	Shelby GT350
2015-2019	Ford	Mustang	Shelby GT350R