Standard Ignition NOX031 Nitrogen Oxide (NOx) Sensor - SCR Catalyst Inlet
OE Quality 60-Day Returns
Standard Ignition

Standard Ignition NOX031 Nitrogen Oxide (NOx) Sensor - SCR Catalyst Inlet

Brand Standard Ignition NOX031
Position SCR Catalyst Inlet
Connector Gender Female
Connector Quantity 1
Connector Shape Rectangular
Terminal Gender Male
Terminal Quantity 6
Terminal Type Pin
Fits Chevrolet and GMC · 6 vehicles

NOx sensor. Measures nitrogen oxide levels for emission control systems.

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

Cross-references 12680340, DNX031 and DNX2031 for the same application. See all 4.

$151.33Free 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 $151.33
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

Standard Ignition NOX031 NOx Sensor

The Standard Ignition NOX031 is a nitrogen oxide sensor for diesel emission control systems. It is built with a female rectangular connector, a 6-pin male terminal layout, and SCR catalyst inlet placement for direct replacement service on select Chevrolet Silverado 1500 and GMC Sierra 1500 applications.

Key Features

  • Nitrogen Oxide (NOx) sensor for emission control diagnostics
  • Female connector with rectangular 1-connector design
  • 6-pin male terminal configuration
  • SCR catalyst inlet mounting position
  • Direct fit for 2020-2022 Chevrolet Silverado 1500 and GMC Sierra 1500
  • Standard Ignition NOX031 replacement part number for service matching

Detailed Description

Standard Ignition NOX031 is a replacement NOx sensor used in selective catalytic reduction systems to monitor nitrogen oxide levels at the SCR catalyst inlet. The connector and terminal layout are specified for proper electrical interface, helping maintain accurate emissions feedback on 2020-2022 Chevrolet Silverado 1500 and 2020-2022 GMC Sierra 1500 diesel applications. This part cross-references 12680340 for the same application.

What It Helps Address

  • Check engine light related to NOx sensor performance
  • Emission system fault codes tied to SCR catalyst inlet readings
  • Incorrect nitrogen oxide monitoring in diesel exhaust aftertreatment
  • Failed emissions inspection caused by sensor-related diagnostics
  • Driveability issues linked to emission control system faults

Installation Notes and Tips

Verify the connector shape, terminal count, and SCR catalyst inlet location before installation. Confirm vehicle application by year, make, and model, especially for 2020-2022 Chevrolet Silverado 1500 and 2020-2022 GMC Sierra 1500 diesel configurations. Inspect the harness connector and surrounding exhaust components for heat damage or corrosion before connecting the new sensor.

Quality Assurance

Standard Ignition is a recognized aftermarket source for electrical and emission control components. NOX031 is built to match the listed connector and terminal specifications for the confirmed applications.

Related reading

This part fits 6 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2022ChevroletSilverado 15003.0LL6SCR Catalyst Inlet—
2022GMCSierra 15003.0LL6SCR Catalyst Inlet—
2021ChevroletSilverado 15003.0LL6SCR Catalyst Inlet—
2021GMCSierra 15003.0LL6SCR Catalyst Inlet—
2020ChevroletSilverado 15003.0LL6SCR Catalyst Inlet—
2020GMCSierra 15003.0LL6SCR Catalyst Inlet—
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
12680340DNX031DNX2031NOX1031