Camshafts are an important part of the combustion process that keeps your car on the road. Their movement is responsible for initiating valve movement, which regulates the air-fuel mixture that powers the Big Bang. Camshafts use camshafts (called lobes) to push and open the valves (springs on the valves return them to the closed position) as the camshaft rotates in sync with the pistons. Although camshafts are durable, they sometimes fail and need to be replaced. There are many reasons for camshaft failure: cam lobe failure due to lubrication issues or tappet failure, camshaft bearing journal failure due to lubrication issues or camshaft breakage. When replacing camshafts, be sure to use our aftermarket replacement camshafts. Description: 100% brand new and high quality Easy installation Direct replacement 1 year warranty Perfect match with the original car Stable performance, high reliability Aftermarket product with excellent quality Professional installation is highly recommended Installation: For Buick Rainier 2005-2007 5.3L 5328CC 325CID V8 OHV, (16 Valve) For Chevrolet Avalanche 2007-2013 5.3L 5328CC 325CID V8 FLEX OHV, (16 Valve) For Chevrolet Avalanche 2007-2009 5.3L 5328CC 325CID V8 OHV, (16 Valve) For CHEVROLET SILVERADO 1500 CLASSIC 2007 5.3L 5328CC 325CID V8 ELECTRIC/GAS OHV, (16 VALVES) For 2007 CHEVROLET SILVERADO 1500 CLASSIC 5.3L 5328CC 325CID V8 FLEX OHV, (16 VALVES) For 2007 CHEVROLET SILVERADO 1500 CLASSIC 5.3L 5328CC 325CID V8 OHV, (16 VALVES) For 2005-2006 CHEVROLET SILVERADO 1500 5.3L 5328CC 325CID V8 ELECTRIC/GAS OHV, (16 VALVES) For 2005-2013 CHEVROLET SILVERADO 1500 5.3L 5328CC 325CID V8 FLEX OHV, (16 VALVES) For 2005-2009 CHEVROLET SILVERADO 1500 5.3L 5328CC 325CID V8 OHV, (16 VALVES) For 2007-2014 CHEVROLET SUBURBAN 1500 5.3L 5328CC 325CID V8 FLEX OHV, (16 VALVES) For 2007-2013 CHEVROLET SUBURBAN 1500 5.3L 5328CC 325CID V8 OHV, (16 VALVES) For 2014 Chevrolet Suburban 5.3L 5328CC 325CID V8 OHV, (16 Valves) For 2007-2014 CHEVROLET TAHOE 5.3L 5328CC 325CID V8 FLEX OHV, (16 VALVES) For Chevrolet TAHOE 2007-2014 5.3L 5328CC 325CID V8 OHV, (16 VALVES) For CHEVROLET TRAILBLAZER EXT 2005-2006 5.3L 5328CC 325CID V8 OHV, (16 VALVES) For CHEVROLET TRAILBLAZER 2006-2008 5.3L 5328CC 325CID V8 OHV, (16 VALVES) For GMC ENVOY XL 2005-2006 5.3L 5328CC 325CID V8 OHV, (16 valves) For GMC ENVOY XUV 2005 5.3L 5328CC 325CID V8 OHV, (16 valves) For 2005-2009 GMC ENVOY 5.3L 5328CC 325CID V8 OHV, (16 valves) For 2007 GMC SIERRA 1500 CLASSIC 5.3L 5328CC 325CID V8 ELECTRIC/GAS OHV, (16 valves) For 2007 GMC SIERRA 1500 CLASSIC 5.3L 5328CC 325CID V8 FLEX OHV, (16 valves) For 2007 GMC SIERRA 1500 CLASSIC 5.3L 5328CC 325CID V8 OHV, (16 valves) For 2005-2006 GMC SIERRA 1500 5.3L 5328CC 325CID V8 ELECTRIC/GAS OHV, (16 VALVES) For 2005-2013 GMC SIERRA 1500 5.3L 5328CC 325CID V8 FLEX OHV, (16 valves) For 2005-2009 GMC SIERRA 1500 5.3L 5328CC 325CID V8 OHV, (16 VALVES) For 2010-2013 GMC SIERRA 5.3L 5328CC 325CID V8 OHV (16 VALVES) For 2007-2014 GMC YUKON XL 1500 5.3L 5328CC 325CID V8 FLEX OHV, (16 VALVES) For 2007-2009 GMC YUKON XL 1500 5.3L 5328CC 325CID V8 OHV, (16 VALVES) For 2008-2014 GMC YUKON 5.3L 5328CC 325CID V8 FLEX OHV, (16 VALVES) For 2008-2010 GMC YUKON 5.3L 5328CC 325CID V8 OHV, (16 VALVES) For 2005-2006 Isuzu Ascending 5.3L 5328CC 325CID V8 OHV, (16 VALVES) For 2005-2009 Saab 9-7X 5.3L 5328CC 325CID V8 OHV, (16 Valve) Kit Includes: Non-AFM Lifter Replacement Kit, Cylinder Head Bolt & Washer Set for 2005-2014 Chevrolet GMC 5.3L. Multilayer Steel (MLS) Head Gasket, Valve Cover Gasket, Valve Stem Seals, Intake Manifold Gasket (Aluminum), Exhaust Manifold Gasket, Front Valve Stem Seals, O-Rings, Other Small Spacers, 30 Cylinder Head Bolts, 16 Non-AFM Hydraulic Roller Lifters/Engine Valve Adjusters, 4 Non-AFM Lifter Pan/Timing Chain Cover Kits with Bolts. For 5.3L Active Fuel Management (Non-AFM) Engine Only. Without Owner’s Manual