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1954664PRX Genuine Cummins Nox Nitrogen Oxide Sensor

1954664PRX Genuine Cummins Nox Nitrogen Oxide Sensor

P/N: 1954664PRX Manufactured by: Cummins
$389.00 - $389.00
$389.00
$389.00 - $389.00
$389.00
1 in Stock
Condition: New
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Product Overview

The 1954664PRX is a genuine Cummins Nox Nitrogen Oxide Sensor designed for select Peterbilt and Ottawa truck applications equipped with Cummins ISX12 and ISX15 engines. This sensor works in the exhaust emissions control system by reading nitrogen oxide levels and sending data to the ECM for SCR, DEF, and EGR system operation. 

Product Features

The 1954664PRX Nox Nitrogen Oxide Sensor is manufactured to Cummins factory specifications for exhaust gas monitoring and emissions system feedback.

  • Reads NOx content in the exhaust stream so the ECM can monitor after-treatment activity.
  • Provides input used during SCR operation and DEF dosing control.
  • Helps the engine control system evaluate exhaust conditions during diesel emissions operation.
  • Supports EGR and after-treatment coordination through sensor-based emissions data.
  • Allows the ECM to recognize NOx-related readings that may set emissions fault codes.

Technical Specifications

Condition New
Part Number 1954664PRX
Brand Cummins
Part Type Nox Nitrogen Oxide Sensor


Installation Notes

The 1954664PRX should be installed in the correct exhaust sensor location with the harness routed away from heat damage and the connector fully seated. Confirm ECM communication after installation and address any active SCR, DEF, or NOx-related diagnostic codes before returning the truck to service.

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