Fits: 2011 thru 2014 Chevy Silverado/GMC Sierra 2500HD/3500HD LML Duramax Diesel

OEM GM replacement downstream (position 2) NOx sensor. This Nitrogen Oxide sensor is located downstream in the exhaust system.

DmaxStore Note: 

• Programming required with GM scan tool or equivalent

Replaces Part#:

• GM 12671388