For sale is a factory OEM Harmonic Balancer Pulley from a 2008 GT500. This is an excellent addition to any 2007 GT500 that is still utilizing the factory lower pulley. The factory 2007 lower pulley weighs 21.3 lbs, while the 2008-2009 OEM pulley weighs 9.9 lbs, thus a weight savings of 11.4lbs. Weight reduction through this change helps with lowering rotating mass as well, plus it is weight off of the front of the car which aids in weight distribution. Excessive weight here also places higher risk for crank failure under high performance use. Ford knew they made a mistake and corrected this in 2008 with the upgraded pulley. $110 shipped to lower 48.