Cam phasers are specially designed, computer-controlled cam gears that automatically optimize camshaft timing based on the current engine rpm. Currently they are used in all 2005 and newer Ford Modular 3 Valve and all 2007 and newer GM L92 engines. Engine oil is pressure fed to the cam phasers through a series of passageways in the cylinder heads and camshafts. The engine computers control solenoids that adjust this oil flow into and out of the phaser's control chambers, giving the ability to retard the cams up to 60 crank degrees.

This Part Fits:

Year	Make	Model	Submodel
2007	Cadillac	CTS	V
2007-2008	Cadillac	Escalade	Base
2008	Cadillac	Escalade	Platinum
2007-2008	Cadillac	Escalade ESV	Base
2008	Cadillac	Escalade ESV	Platinum
2007-2008	Cadillac	Escalade EXT	Base
2008	Chevrolet	Corvette	427 Limited Edition Z06
2007,2009-2011	Chevrolet	Corvette	Base
2010-2011	Chevrolet	Corvette	Grand Sport
2007-2011	Chevrolet	Corvette	Z06
2011	Chevrolet	Corvette	Z06 Carbon
2009-2011	Chevrolet	Corvette	ZR1
2007-2008	GMC	Sierra 1500	Denali
2007-2008	GMC	Yukon	Denali
2007-2008	GMC	Yukon XL 1500	Denali
2008	Hummer	H2	Base