1954665PRX | Genuine Paccar® Nitrogen Oxide Sensor

Description and Purpose:

The New Nitrogen Oxide Sensor, Part Number: 1954665PRX, is a Genuine emissions system component developed by Paccar to deliver precise NOx level detection within diesel exhaust systems. Built for ISB 6.7L engine configurations, this sensor is a key part of the SCR (Selective Catalytic Reduction) process, allowing the control module to dose DEF correctly and reduce harmful emissions. Designed for heavy-duty commercial trucks, it ensures that emission levels stay within legal limits while supporting overall drivetrain stability and regulatory compliance. Cross reference: 1954665PE, 1954665, RX1954665PRX

Why Replacement is Important:

Worn or inaccurate NOx sensors can disrupt SCR operation, trigger fault codes, and reduce engine output. Replacing the sensor restores accurate exhaust monitoring and helps prevent system shutdowns.

Impact on Vehicle Performance:

With stable NOx readings, the sensor ensures proper emissions control, supports fuel economy, and maintains consistent engine response—especially critical for long-haul truck performance.

Manufacturer Information:

Paccar® delivers OEM-grade engine and drivetrain solutions trusted in Kenworth® and Peterbilt® trucks around the world.

Tags & Category: NOx Sensor, Nitrogen Oxide Sensor, Emissions Sensor, Exhaust Sensor, Emissions System Components, Diesel Engine Sensor, ISB 6.7L Compatible, Cummins ISB Engine Parts, Aftertreatment Sensor, Engine Monitoring Sensor, Emission Compliance Sensor, Heavy Duty Truck Parts, OBD Sensor, SCR System Component

Warranty:

Parts Finder Q offers a 365-days warranty for all types of parts in any condition. The -warranty applies exclusively to purchases made directly through our website (partsfinderq.com). Please note that purchases made through third-party platforms like eBay or Amazon are not covered by this warranty.