Dorman 904-421 Nitrogen Oxide (NOx) Sensor
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Why buy from Koskowski Automotive?
• 50+ years (since 1972) • Dorman Authorized Seller • Fast shipping • Easy returns
Regular price
$251.13
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Vehicle Fitment: Use the table below to match your exact configuration. If you don’t see your exact setup, message us before ordering.
Product Description
This NOx sensor has been made to match the original equipment sensor on certain vehicle years, makes and models, properly restoring nitrogen oxide detection to comply with emissions regulations.
- Direct replacement - this replacement NOx sensor matches the function and performance of the original sensor on specified vehicles
- Restores performance - properly repairs nitrogen oxide detection to comply with regulations
- Application specific - reverse engineered from the original design on certain vehicle years, makes and models
- Trustworthy quality - backed by team of engineers and quality specialists in the United States
Detailed Applications
| Year | Make | Model | Configuration | Positions | Application Notes |
|---|---|---|---|---|---|
| 2014 | Chevrolet | Express 2500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2014 | Chevrolet | Express 3500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2014 | Chevrolet | Express 4500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2014 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2014 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2014 | GMC | Savana 2500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2014 | GMC | Savana 3500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2014 | GMC | Savana 4500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2014 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2014 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2013 | Chevrolet | Express 2500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2013 | Chevrolet | Express 3500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2013 | Chevrolet | Express 4500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2013 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2013 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2013 | GMC | Savana 2500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2013 | GMC | Savana 3500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2013 | GMC | Savana 4500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2013 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2013 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2012 | Chevrolet | Express 2500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2012 | Chevrolet | Express 3500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2012 | Chevrolet | Express 4500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2012 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2012 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2012 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2012 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2012 | GMC | Savana 2500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2012 | GMC | Savana 3500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2012 | GMC | Savana 4500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2012 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2012 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2012 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2012 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2011 | Chevrolet | Express 2500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2011 | Chevrolet | Express 3500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2011 | Chevrolet | Express 4500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2011 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2011 | Chevrolet | Silverado 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2011 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2011 | Chevrolet | Silverado 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2011 | GMC | Savana 2500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2011 | GMC | Savana 3500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2011 | GMC | Savana 4500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2011 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2011 | GMC | Sierra 2500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2011 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2011 | GMC | Sierra 3500 HD | V8 403 6.6L (6599cc); Engine Desg. LML | Downstream | |
| 2010 | Chevrolet | Express 2500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream | |
| 2010 | Chevrolet | Express 3500 | V8 403 6.6L (6599cc); Engine Desg. LGH | Downstream |
Product Specifications
| Color: | Silver |
|---|---|
| Connector Color: | Black and Silver |
| Connector Gender: | Female |
| Connector Shape: | Rounded Rectangle |
| Finish: | Plain |
| Package Contents: | 1 Sensor With Module |
| Terminal Gender: | Male |
| Terminal Quantity: | 6 |
| Terminal Type: | Pin |
| Universal Or Specific Fit: | Specific |
| Wire Gauge Measurement: | 20 AWG |
| Wiring Harness Length: | 920 mm |
OE Numbers
| DIRECT OE CROSS | |
|---|---|
| 12671388 | GENERAL MOTORS |
| 19256344 | GENERAL MOTORS |