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Cummins  |  SKU: 321246

321246 | Genuine Cummins® NOX Nitrogen Oxide Sensor For 2013-24 6.7L

$74500
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Description:
A nitrogen oxide (NOₓ) sensor 321246 is a device used in diesel engines (and some gasoline engines) to measure the amount of nitrogen oxides (NO and NO₂) in the exhaust gas. These gases are harmful pollutants and are tightly regulated by emissions laws. Nox Nitrogen Oxide Sensor For EPA13 15L ISX/QSX, work condition, used take-off Kenworth T880 2024 

Part Number: 321246
Condition: New
Manufacture/Brand: Cummins

Fits 321246 For Various Trucks, With Cummins 6.7L L6 - Diesel Engines

Year Make Model Body & Trim Engine & Transmission
2013-2024 Ram 2500 Big Horn, Laramie, Laramie Longhorn, Limited, SLT, Tradesman 6.7L L6 - Diesel
2013-2024 Ram 3500 Big Horn, Laramie, Laramie Longhorn, Limited, SLT, Tradesman 6.7L L6 - Diesel
2013-2018 Ram 4500 Big Horn, Laramie, Laramie Longhorn, Limited, SLT, Tradesman 6.7L L6 - Diesel
2013-2018 Ram 5500 Big Horn, Laramie, Laramie Longhorn, Limited, SLT, Tradesman 6.7L L6 - Diesel
2013-2018 Freightliner M2 106 6.7L L6 - Diesel
2020 International HV613 6.7L L6 - Diesel
2016-2017 International 4300 6.7L L6 - Diesel
2018-2019 Ottawa T-2 6.7L L6 - Diesel
2018 Ottawa YARDHORSE 6.7L L6 - Diesel


Purpose of using 321246:

  • Monitor exhaust emissions before and/or after the catalytic converter

  • Control the SCR system by adjusting how much DEF is injected

  • Ensure proper operation of emissions components

  • Reduce harmful pollutants released into the air

  • Help the engine computer detect emissions faults

 


Signs of a Bad Nox Sensor 321246:

Warning lights & messages

  • Check Engine Light

  • Messages like “Service Emissions System” or “Poor DEF Quality”

  • Countdown to no-start (common on diesel vehicles)

Performance issues

  • Reduced power / limp mode

  • Sluggish acceleration

  • Speed limitation in some vehicles

DEF & emissions issues

  • Increased DEF consumption or incorrect dosing

  • SCR system not working properly

  • Failed emissions or smog test

Exhaust-related symptoms

  • Higher-than-normal emissions

  • Strong exhaust smell

Diagnostic trouble codes

  • NOx sensor circuit or performance codes

  • SCR efficiency or emissions-related fault codes


About the Manufacturer – Cummins:

Cummins is a leading American manufacturer of diesel and natural gas engines, as well as power generation systems and emissions solutions. Founded in 1919 and headquartered in Columbus, Indiana, Cummins is known globally for its durable, high-performance engines used in trucks, buses, construction equipment, agriculture, and power systems.

The brand is widely respected for its innovation in clean diesel technology, including aftertreatment systems, turbochargers, and advanced electronics that help reduce emissions while maximizing engine efficiency and reliability.

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