ACDelco Smooth Idler Pulley, Duramax | 2001 - 2016

This does not have the ribs on it for running on the inside of the belt

Hearing a noise under the hood? Check those idler pulley's carefully. Any noise in them could be a sign that the bearing is going bad. A failed idler pulley will usually cause the belt to come off, leaving you stranded. Don't get stuck on the side of the road for the price of this pulley.

02 and newer Duramax engines use 2 of these.

2500HD 3500 Silverado Sierra 6.6L V8 Duramax diesel:

Single and Dual Alternator, Two Main and Third Pulleys
2001, 2002, 2003, 2004, 2005, 2006, 2007, 2008, 2009, 2010, 2011, 2012

Dual Alternator, Third Pulley
2013, 2014, 2015, 2016

2500 3500 Van Express Savana 6.6L V8 Duramax diesel:
2006, 2007, 2008, 2009, 2010, 2011, 2012, 2013, 2014, 2015, 2016

1 Year Warranty