Dorman 904-421 nitrogen oxide (nox) sensor for the 2010-2014 Chevrolet Express 2500 V8 6.6L and other vehicles detects nitrogen oxide in the exhaust. It is a direct replacement made to match the original sensor on certain years, makes and models.
- Intended to restore nitrogen oxide detection so the vehicle can meet emissions regulations
- Reverse engineered from the original design for its specific application
- Supplied as a sensor with module
- 920 mm wiring harness with 6 male pin terminals and a female rounded-rectangle connector
- Part of the Dorman OE Solutions line
Quick facts
- Part: Dorman 904-421 nitrogen oxide (nox) sensor
- Fits: 2010-2014 Chevrolet Express 2500 V8 6.6L and other vehicles
- Position: Downstream
- Condition: New
A failing NOx sensor can show up as a check engine light or an emissions-related fault code. Damaged wiring can set a sensor fault too, so with the engine off and cool, look over the harness and connector for cracks, melted insulation or corrosion before you buy. If the sensor is the cause, this one replaces it. The engine takes one, in the downstream position, and this listing is a single sensor.
Fits
As a downstream NOx sensor, it goes on the 2010-2014 Chevrolet Express 3500 V8 6.6L, the 2010-2014 Chevrolet Express 4500 V8 6.6L and a wide range of other Chevrolet and GMC models. Driving something else? Run your own truck or van through the "Vehicles it fits" section before you order.
Specifications
Fit and size
- Position: Downstream
- Quantity per vehicle: 1
- Wiring harness length: 920 mm
- Terminals: 6, male pin
- Connector: female, rounded rectangle, black and silver
- Wire gauge: 22
Build and materials
- Finish: Plain
- Condition: New
- Country of origin: China
In the box
One NOx sensor with module.
Interchange: 213-4588
12671388 · NOX1001 · 4N1000 · 12622451 · 19256344 · NOX001
Product information is for general reference and may contain errors. See our Disclaimer.
This part cross-references / interchanges with the following part numbers:
12671388, 213-4588, NOX1001, 4N1000, 12622451, 19256344, NOX001
Frequently Asked Questions
Does the Dorman 904-421 NOx sensor fit the 2010-2014 Chevrolet Express 3500 V8 6.6L?
Yes. Dorman 904-421 is listed for the 2010-2014 Chevrolet Express 3500 V8 6.6L, and the engine takes one sensor in the downstream position.
What comes with the Dorman 904-421 nitrogen oxide sensor?
The package holds one NOx sensor with its module.
How long is the wiring harness on the 904-421 NOx sensor?
Dorman 904-421 has a 920 mm wiring harness. It ends in a female rounded-rectangle connector with 6 male pin terminals, and the wire is 22 gauge.
What can a failing downstream NOx sensor look like?
A check engine light or an emissions-related fault code can be a sign. A shop can read the code and test the sensor on the vehicle.
Is this NOx sensor upstream or downstream?
Downstream. This listing is a single sensor for that position.
