GM Upstream NOx Sensor, 2018-2019 L5P

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Fits: 2018 thru 2019 Chevy Silverado/GMC Sierra 2500HD/3500HD L5P Duramax Diesel *Contact us for current lead times* OEM GM replacement upstream (position 1) NOx sensor. This Nitro gen Oxide sensor is located upstream in the downpipe. DmaxStore Note: Programming required with GM scan tool or equivalent Replaces Part#'s: GM 12680215 GM 12718742 Show more