Vehicle Fitment-GMC---GMC Savana 1500 Savana 2500 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
OE Number---19311139 38159 90K-38159 ACK040378HD 4PK962 Please double check that the replacement part number matches the part number you need before you buy, and then correspond to our product photos to see if they match the product you want
Quiet Operation---Designed with advanced technology, this tensioner assembly reduces noise and vibration, providing a smooth and quiet driving experience. The high-quality bearings and pulleys minimize friction, contributing to a quieter engine operation
Function---This Belt Tensioner assure appropriate belt tension, alignment, and damping for superior performance. Vibration damping system increases tensioner, belt, and accessory component life