Standard Ignition NOX001 Nitrogen Oxide (NOx) Sensor - Downstream
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Standard Ignition

Standard Ignition NOX001 Nitrogen Oxide (NOx) Sensor - Downstream

Brand Standard Ignition NOX001
Position Downstream
Connector Gender Female
Connector Quantity 1
Connector Shape Square
Terminal Gender Male
Terminal Quantity 6
Terminal Type Pin
Fits Chevrolet and GMC · 46 vehicles

OE direct replacement. Direct-fit design ensures proper fit, form, and function for easier installation.

Plug and play. No additional programming required.

Extensively tested. Validated for proper performance and reliable operation.

Cross-references Dorman - OE Solutions 904-421, 4N-1000 and 12622451 for the same application. See all 8.

$270.01Free shipping
In stock · usually ships same day before 1pm CST
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.

Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
Step 2 — Quantity
Order total $270.01
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Nitrogen Oxide (NOx) Sensor options

OE Replacement NOx Sensor for GM Diesel Applications

The Standard Ignition NOX001 is a direct-fit nitrogen oxide sensor for downstream emission monitoring on select Chevrolet and GMC trucks and vans. It is built for proper fit, form, and function, with plug-and-play installation and no additional programming required.

  • Direct-fit OE replacement for downstream NOx sensing
  • Plug-and-play design with no additional programming required
  • Female connector with square housing
  • 6-pin male terminals for secure electrical connection
  • Extensively tested for performance and reliability
  • Fits Chevrolet Express 2500, Chevrolet Express 3500, Silverado 2500 HD, Silverado 3500 HD, GMC Savana 2500, GMC Savana 3500, Sierra 2500 HD, and Sierra 3500 HD applications

Fitment and Application Details

Compatible with downstream emission control systems on 2010-2014 Chevrolet Express 2500, 2010-2014 Chevrolet Express 3500, 2011-2014 Chevrolet Silverado 2500 HD, 2011-2014 Chevrolet Silverado 3500 HD, 2010-2014 GMC Savana 2500, 2010-2014 GMC Savana 3500, 2011-2014 GMC Sierra 2500 HD, and 2011-2014 GMC Sierra 3500 HD. This part cross-references Dorman OE Solutions 904-421 for the same application.

What This Sensor Helps Address

  • NOx sensor fault codes related to downstream emissions monitoring
  • Check engine lights caused by failed nitrogen oxide sensor readings
  • Incorrect exhaust aftertreatment data in diesel emission systems
  • Driveability issues tied to emission system faults
  • Inspection failures caused by emissions-related diagnostic trouble codes

Installation Notes

Use this sensor as a direct OE-style replacement for the original downstream unit. The connector is female with a square shape, and the terminal layout is 6-pin male, which supports straightforward installation when the vehicle harness matches the original configuration. Verify the application by year, make, model, and downstream position before installation.

Quality Assurance

Standard Ignition manufactures this NOX001 sensor with complete in-process quality control and validation testing to support proper performance. The part is produced as an OE replacement to maintain fit and function on the listed Chevrolet and GMC applications.

Related reading

This part fits 46 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2014ChevroletExpress 25006.6LV8Downstream—
2014ChevroletExpress 35006.6LV8Downstream—
2014ChevroletExpress 45006.6LV8Downstream—
2014ChevroletSilverado 2500 HD6.6LV8Downstream—
2014ChevroletSilverado 3500 HD6.6LV8Downstream—
2014GMCSavana 25006.6LV8Downstream—
2014GMCSavana 35006.6LV8Downstream—
2014GMCSavana 45006.6LV8Downstream—
2014GMCSierra 2500 HD6.6LV8Downstream—
2014GMCSierra 3500 HD6.6LV8Downstream—
2013ChevroletExpress 25006.6LV8Downstream—
2013ChevroletExpress 35006.6LV8Downstream—
2013ChevroletExpress 45006.6LV8Downstream—
2013ChevroletSilverado 2500 HD6.6LV8Downstream—
2013ChevroletSilverado 3500 HD6.6LV8Downstream—
2013GMCSavana 25006.6LV8Downstream—
2013GMCSavana 35006.6LV8Downstream—
2013GMCSavana 45006.6LV8Downstream—
2013GMCSierra 2500 HD6.6LV8Downstream—
2013GMCSierra 3500 HD6.6LV8Downstream—
2012ChevroletExpress 25006.6LV8Downstream—
2012ChevroletExpress 35006.6LV8Downstream—
2012ChevroletExpress 45006.6LV8Downstream—
2012ChevroletSilverado 2500 HD6.6LV8Downstream—
2012ChevroletSilverado 3500 HD6.6LV8Downstream—
2012GMCSavana 25006.6LV8Downstream—
2012GMCSavana 35006.6LV8Downstream—
2012GMCSavana 45006.6LV8Downstream—
2012GMCSierra 2500 HD6.6LV8Downstream—
2012GMCSierra 3500 HD6.6LV8Downstream—
2011ChevroletExpress 25006.6LV8Downstream—
2011ChevroletExpress 35006.6LV8Downstream—
2011ChevroletExpress 45006.6LV8Downstream—
2011ChevroletSilverado 2500 HD6.6LV8Downstream—
2011ChevroletSilverado 3500 HD6.6LV8Downstream—
2011GMCSavana 25006.6LV8Downstream—
2011GMCSavana 35006.6LV8Downstream—
2011GMCSavana 45006.6LV8Downstream—
2011GMCSierra 2500 HD6.6LV8Downstream—
2011GMCSierra 3500 HD6.6LV8Downstream—
2010ChevroletExpress 25006.6LV8Downstream—
2010ChevroletExpress 35006.6LV8Downstream—
2010ChevroletExpress 45006.6LV8Downstream—
2010GMCSavana 25006.6LV8Downstream—
2010GMCSavana 35006.6LV8Downstream—
2010GMCSavana 45006.6LV8Downstream—
Directly replaces or cross-references 8 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
Dorman - OE Solutions — 904-4214N-1000126224511267138873177871DNX001DNX1001NOX1001