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2872942 Genuine Cummins Nox Nitrogen Oxide Exhaust Sensor

2872942 Genuine Cummins Nox Nitrogen Oxide Exhaust Sensor

P/N: 2872942 Manufactured by: Cummins
$389.00 - $389.00
$389.00
$389.00 - $389.00
$389.00
1 in Stock
Condition: New
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At Line Truck Parts LLC, we are committed to providing reliable automotive parts and a transparent customer experience. Eligible parts purchased directly from our website are covered by a 2-Year Limited Warranty, giving you added confidence in your purchase. Learn More

Product Overview

The 2872942 is a genuine Cummins Nox Nitrogen Oxide Sensor designed for EPA13 ISX/QSX 15-liter engine applications. This sensor measures NOx levels in the exhaust stream and sends emissions data to the engine control module for SCR, DEF, and EGR system operation. 

Product Features

The 2872942 Nox Nitrogen Oxide Sensor is manufactured to Cummins factory specifications for exhaust gas measurement and after-treatment system feedback.

  • Tracks nitrogen oxide output from the exhaust stream for ECM emissions calculations.
  • Sends exhaust sensor input used to control SCR system response.
  • Helps the ECM adjust DEF/AdBlue dosing based on measured NOx conditions.
  • Supports EGR-related emissions strategy through monitored exhaust data.
  • Provides input used when diagnosing NOx sensor, SCR efficiency, or emissions faults.

Technical Specifications

Condition New
Part Number 2872942
Brand Cummins
Part Type Nox Nitrogen Oxide Sensor


Installation Notes

The 2872942 should be installed in the correct exhaust sensor location with the wiring routed away from heat exposure and the connector seated securely. Confirm ECM communication after installation and check for active SCR, DEF, or NOx-related diagnostic codes before returning the vehicle to service.

Verify part number, VIN, engine configuration, production date, emissions package, and applicable factory options before installation.