12634218 OE Upper Ribbed Idler Pulley, No Air Conditioning, 2001-2010 GM 6.6L Duramax LB7 LLY LBZ LMM

12634218 OE Upper Ribbed Idler Pulley, No Air Conditioning Fits 2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010
6.6L Duramax LB7 LLY LBZ LMM