NTAKE MANIFOLD GASKET KIT - Responsible for sealing the intake manifold against the cylinder heads. If you have problems like engine missfire, coolant leaks, engine overheating, or decrease in power, acceleration, and fuel economy, you might need to replace your intake manifold gasket. FIT THE FOLLOWING VEHICLES - Intake Manifold Gasket Set compatible with 4.8L 5.3L 6.0L 6.2L GM Vortec engine, including Chevy Silverado, Suburban, Tahoe, Trailblazer, Express, Colorado, Avalanche, GMC Sierra, Yukon, Savana, Canyon, Envoy, Cadillac Escalade, Buick Rainier, Hummer H2, H3, H3T, Isuzu Ascender, Saab 9-7x, model year 1999, 2000, 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014