180° Thermostat for all LS1/LS2/LS3/LS6/LS7 2004-2008 Corvettes/2004-2006 GTO/2004-2006 (2007 Classic) Full Size Trucks/SUV's equipped with 4.8/5.3/6.0L engines along with 2006 Trailblazer SS and 2008-2009.5 Pontiac G8.