【Vehicle Fitment-1】Tensioner pulley fit for Chevy Avalanche 2007-2008;fit for Avalanche 1500 2002-2006; fit for Express 1500 2003-2008; fit for Express 2500 2003-2008; fit for Express 3500 2003-2008; fit for Silverado 1500 1999-2008; fit for Silverado 1500 HD 2001-2006;fit for Silverado 2500 1999-2004; fit for Silverado 2500 HD 2001-2008; fit for Silverado 3500 2001-2006; fit for Silverado 3500 HD 2007-2008; Suburban 1500 2000-2008; Suburban 2500 2000-2008; Tahoe 2000-2008 【Vehicle Fitment-2】 A/C Tensioner Pulley Fit for GMC Savana 1500 2003-2008; Savana 2500 2003-2008; Savana 3500 2003-2008; Sierra 1500 1999-2008; Sierra 1500 Classic 2007; Sierra 1500 HD 2001-2006; Sierra 1500 HD Classic 2007; Sierra 2500 1999-2004; Sierra 2500 HD 2001-2008; Sierra 2500 HD Classic 2007; Sierra 3500 HD 2001-2006; Sierra 3500 HD Classic 2007; Sierra 3500 HD 2007-2008; Yukon 2000-2008; Yukon XL 1500 2000-2008; Yukon XL 2500 2000-2008 【Reference Number】The drive belt & tensioner set replace OE number:19311139 38159 90K-38159 ACK040378HD 【OEM Fit & Quality】100% Brand New Item. Direct Bolt-on OEM Aftermarket Replacement Air Conditioning Belt Tensioner Assembly. It directly replaces the automotive drive belt tensioner assembly with a pulley. 【Easy Installation】The 38159 Accessory Drive Belt matches the fit of an original equipment assembly on specified vehicles, designed for a hassle-free installation process, saving you time and effort. 1