Standard Ignition NOX026 Nitrogen Oxide (NOx) Sensor - Upstream
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Standard Ignition

Standard Ignition NOX026 Nitrogen Oxide (NOx) Sensor - Upstream

Brand Standard Ignition NOX026
Position Upstream
Connector Gender Female
Connector Quantity 1
Connector Shape Rectangular
Terminal Gender Male
Terminal Quantity 6
Terminal Type Pin
Fits Chevrolet and GMC · 15 vehicles

NOx sensor. Monitors nitrogen oxide levels for emission control.

Single connector. Rectangular female connector with six male pin terminals.

Cross-references 12695881, 12708005 and DNX026 for the same application. See all 5.

$185.93Free shipping
In stock · usually ships same day before 1pm CST
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Step 2 — Quantity
Order total $185.93
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

NOx Sensor for Heavy-Duty GM Diesel Applications

Standard Ignition NOX026 is a nitrogen oxide (NOx) sensor for upstream exhaust monitoring on select Chevrolet Silverado HD and GMC Sierra HD diesel trucks. It uses a female rectangular connector with 6 male pin terminals for a direct-fit electrical connection in the emission control system.

Key Features

  • Nitrogen oxide (NOx) sensor for emission control system monitoring
  • Upstream position application
  • Female rectangular connector
  • 6-pin male terminal design
  • Direct replacement part number NOX026
  • Cross-references Standard Ignition NOX026 for the same application

Fitment Details

  • Fits 2020-2023 Chevrolet Silverado 2500 HD, upstream
  • Fits 2020-2022 Chevrolet Silverado 3500 HD, upstream
  • Fits 2020-2023 GMC Sierra 2500 HD, upstream
  • Fits 2020-2023 GMC Sierra 3500 HD, upstream

How This Sensor Is Used

  • Addresses NOx sensor fault codes related to exhaust aftertreatment monitoring
  • Restores accurate upstream emissions data for diesel engine control
  • Helps resolve check engine lights tied to NOx sensor performance
  • Supports proper operation of the selective catalytic reduction system
  • Helps correct drivability issues caused by failed emissions feedback

Installation Notes and Tips

Verify connector shape, terminal count, and upstream location before installation. This part is listed for 2020-2023 Chevrolet Silverado 2500 HD, 2020-2022 Chevrolet Silverado 3500 HD, 2020-2023 GMC Sierra 2500 HD, and 2020-2023 GMC Sierra 3500 HD. Confirm the original part number and sensor position against the vehicle service information before replacing the sensor.

Quality Assurance

Standard Ignition supplies emission control components for service replacement applications. Part number NOX026 is listed with OE-style interchange references including 12695881 and 12708005 for the same application.

Related reading

This part fits 15 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
2023ChevroletSilverado 2500 HDUpstream—
2023GMCSierra 2500 HDUpstream—
2023GMCSierra 3500 HDUpstream—
2022ChevroletSilverado 2500 HDUpstream—
2022ChevroletSilverado 3500 HDUpstream—
2022GMCSierra 2500 HDUpstream—
2022GMCSierra 3500 HDUpstream—
2021ChevroletSilverado 2500 HDUpstream—
2021ChevroletSilverado 3500 HDUpstream—
2021GMCSierra 2500 HDUpstream—
2021GMCSierra 3500 HDUpstream—
2020ChevroletSilverado 2500 HDUpstream—
2020ChevroletSilverado 3500 HDUpstream—
2020GMCSierra 2500 HDUpstream—
2020GMCSierra 3500 HDUpstream—
Directly replaces or cross-references 5 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
1269588112708005DNX026DNX3026NOX1026