Fitments: for:-Chevy Silverado 1500 1999-2008, Silverado 1500 Classic 2007, Silverado 1500 HD 2001-2003, Silverado 1500 HD 2005-2006, Silverado 1500 HD Classic 2007, Silverado 2500 1999-2004, Silverado 2500 HD 2001-2008, Silverado 2500 HD Classic 2007, Silverado 3500 2001-2006, Silverado 3500 Classic 2007, Silverado 3500 HD 2007-2008, Express 1500 2003-2008, Express 2500 2003-2008, Express 3500 2003-2008, Suburban 1500 2000-2008, Suburban 2500 2000-2008, Tahoe 2000-2008, Avalanche 2007-2008, Avalanche 1500 2002-2006, SSR 2003-2006, Trailblazer 2006-2009, Trailblazer EXT 2003-2006 Fitments: for:-GMC Sierra 1500 1999-2008, Sierra 1500 Classic 2007, Sierra 1500 HD 2001-2003, Sierra 1500 HD 2005-2006, Sierra 1500 HD Classic 2007, Sierra 2500 1999-2004, Sierra 2500 HD 2001-2008, Sierra 2500 HD Classic 2007, Sierra 3500 2001-2006, Sierra 3500 Classic 2007, Sierra 3500 HD 2007-2008, Savana 1500 2003-2008, Savana 2500 2003-2008, Savana 3500 2003-2008, Envoy 2005-2009, Envoy XL 2003-2006, Envoy XUV 2004-2005, Yukon 2000-2008, Yukon XL 1500 2000-2008, Yukon XL 2500 2000-2008 Fitments: for:-Cadillac Escalade 2002-2008, Escalade ESV 2003-2008, Escalade EXT 2002-2008; for:-Buick Rainier 2004-2007; for:-Hummer H2 2003-2008 H3 2008; for:-Isuzu Ascender 2003-2006; for:-Saab 9-7X 2005-2009 OE Number: 38158, 88929140, 12554027, 12580162, 12609719, 8126097190, 8125801620, 89253FN, 89253, 49275, SK89253 Specifications: Belt Type: V-Ribbed; Outside Diameter: 76(mm); Bearing Bore Inside Diameter: 17(mm); Width: 25(mm) Prevent Belt Slippage: Ensure stable power transmission, optimal belt tension control maintains precise tension to prevent slippage, ensuring smooth operation of critical engine accessories (alternator, water pump, a/c compressor), high-temperature resistance advanced spring/damper system prevents tension loss even under extreme heat or heavy load conditions anti-slip design reduces belt wear and ensures consistent power delivery to all engine-driven components Reduce Bearing Load: Protect engine accessories, balanced tension less wear prevents excessive strain on: water pump bearings (avoiding coolant leaks & overheating), alternator bearings (preventing charging system failure), ac compressor bearings (reducing clutch wear & refrigerant leaks) smoother operation reduces vibration, prolonging accessory lifespan Eliminate Noises: Improve driving comfortsilent operation high grade sealed bearings eliminate cold-start squealing high-rpm whining metallic grinding noises improves cabin quietness for a more comfortable ride Prevent Sudden Belt Failure: Ensure safety avoid costly breakdowns a snapped belt can cause, engine stalling (dangerous in traffic), loss of power steering/brake boost, overheating (water pump failure), dead battery (alternator failure) reinforced construction – high-strength materials prevent sudden tensioner failure Customer S-u-p-p-o-r-t: AOTPAT ALL Belt Tensioner comes with a 2-Year W-a-r-r-a-n-t-y, Each Tensioner is tested before leaving the factory to ensure trouble-free installation and performance. If you encounter problems, please c-o-n-t-a-c-t us and we will reply within 24 hours Brand AOTPAT Model Belt Tensioner 38158 Exterior Smooth-operating Position Front Item Weight 3.2 ounces Manufacturer AOTPAT Item model number 38158 Package Dimensions 0.52 x 0.51 x 0.5 inches Manufacturer Part Number 9WHFUSE0702TF06