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OEM direct fit
Roadwarrior Part # NOX-CXX-004
Engine Manufacturer
OEM Part Number

2894943

OEM Price: CAD 1,205

Sale: CAD 424

Save: $781

Direct Fit Replacement NOx Sensor for Cummins

In stock

Description

Need to Replace a Cummins NOx Sensor (2894943 or 2871974)?

Our NOX-CXX-004 is a precise-fit replacement for Cummins outlet NOx sensors with OEM part numbers 2894943 or 2871974. The Roadwarrior aftermarket catalogue includes plug-and-play substitutes for eight Cummins NOx sensor models. We test our NOx sensors thoroughly before releasing them to ensure they’re compatible with Cummins ISX engines! Our testing also confirms that our replacement parts meet or exceed the performance standards of the outlet Cummins NOx sensor they’re replacing!

What is a Cummins NOx Sensor?

Most Cummins engines have 1 NOx sensor on either side of the SCR to monitor the catalyst’s NOx reduction performance! The inlet/ upstream sensor monitors NOx levels before the SCR, so the ECU knows how much DEF to inject. The outlet/ downstream nitrogen oxide sensor then checks NOx levels in the exhaust after the SCR. The ECU uses this comparative data to test how well the SCR is working and whether to inject more DEF. This helps the SCR catalyst reduce toxic nitrogen oxide particles in the semitruck’s exhaust!

Why Choose Roadwarrior NOx Sensors?

Either because of their own experiences or stories from colleagues, many drivers are unsure about trying aftermarket Cummins NOx sensors. Buyer experience and part quality vary considerably between different aftermarket suppliers, so it’s important to find a company you trust. That’s why we place such emphasis on showing our customers that we’re a reliable choice! We do this by supplying high-performing parts when and where you need them, with a hassle-free warranty to protect your investment! We combine the lower prices and shorter wait times of an aftermarket part, with the reliability of an OEM. You can order Roadwarrior replacements for your outlet Cummins NOx sensor (part number 2894943 or 2871974) through your local dealer. You can also get parts directly through our website, or by calling and speaking to our sales team!

As a Canadian company with 13 warehouses across North America, we’re easy to reach! Our most popular parts are always in stock at our warehouses, so a Roadwarrior replacement means a shorter wait time! Many of our parts are even available for next-day delivery or same-day pick-up! If you’d rather order over the phone, just call 1-877-897-9759 to speak to a member of the team! You can also learn more about what to look for in an aftermarket replacement for a Cummins NOx sensor (2894943 or 2871974) in our blog!

What Are the Most Common Cummins NOx Sensor Problems?

Cummins NOx sensors are an extremely sensitive part that measures fluctuations in microscopic NOx particles in your exhaust stream. However, like all delicate sensors, a small amount of damage or contamination can cause nitrogen oxide sensors to malfunction. One of the most common causes of 2894943 or 2871974 Cummins NOx sensor problems is soot contamination from other parts of the emissions system. If soot from the exhaust clogs up the nitrogen oxide sensor, it will quickly start giving inaccurate readings! Unfortunately, this can lead to too much or too little DEF being injected before the SCR. The ECU will then trigger a fault code to alert you to this issue!

Your 2894943 or 2871974 Cummins NOx sensors are also very susceptible to moisture contamination. The sensor can be exposed to moisture either during installation or from the exhaust when it’s in operation. The risk of contamination is one reason we recommend having your NOx sensor professionally installed, rather than doing it yourself.

Additional information

Part Type

RW Part Number

NOX-CXX-004

6 reviews for 2894943

  1. Casey H
    5 June 2024
    Improved reliability of my Detroit Diesel DD13 engine.
    Helpful? 0 0
    Fletcher K
    5 June 2024
    The part arrived quickly and in perfect condition thanks to Roadwarrior.
    Helpful? 0 0
    Jimmie R
    5 June 2024
    Effectively solved the P1495 fault code on my Detroit Diesel engine.
    Helpful? 0 0
    Alexander B
    5 June 2024
    Versatile component compatible with Detroit Diesel DD15 engines.
    Helpful? 0 0
    Owen S
    5 June 2024
    Noticed a significant improvement in exhaust performance on my DD13.
    Helpful? 0 0
    Mike
    8 June 2021
    Great parts, delivered on time, no problem, thank you Roadwarrior
    Helpful? 0 0
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Next Day Is Nice, Same Day is Better!​

A faulty emissions control system can cost you thousands in wasted man-hours as your heavy equipment sits in the shop awaiting a new part. Whether it’s a truck behind on orders, a bus that can’t take passengers, or heavy machinery delaying construction deadlines, Roadwarrior can get you moving again!

Roadwarrior has twelve warehouses across the U.S.A. and Canada, which can deliver the most popular aftertreatment parts in 1-2 days. With over 1,000 DPFs, DOCs and SCRs on offer, Roadwarrior offers the largest aftertreatment catalogue.

*LightningVolt lithium batteries ship directly from Roadwarrior in Ontario, to ALL 50 states, including Alaska and Hawaii within 2-4 days.

Roadwarrior Has You Covered!

All Roadwarrior emissions parts carry a full value 12 month warranty.

LightningVolt lithium batteries carry a full value 30 month warranty.

To make the process hassle-free, our parts have a metal nameplate with the serial number, so even after 500,000 miles of service, it’s still easy to identify. This avoids the common problem of serial numbers printed on stickers that burn off after the first start-up, making them impossible to return. Our failsafe system allows us to work in your interests, honouring claims for on-road and off-road replacements, and giving you peace of mind.

And since Roadwarrior parts are designed to meet or exceed OEM specifications, you can rest easy knowing our direct fit parts will take the problems out of your aftertreatment without interfering with your OEM warranty.

Better Coating, Better Performance.

Roadwarrior is the only manufacturer to use Metalcor® catalyst technology across its entire range of Diesel Oxidation Catalysts (DOCs) and Selective Catalytic Reduction catalysts (SCRs). Metalcor® catalysts feature high activity catalyst coatings fused to thinner, stronger, catalyst substrates to guarantee maximum performance under the harshest conditions.

Metalcor® catalyst coatings are designed and produced in our own labs. We then inspect each unit to ensure you get more fuel efficiency, lower consumption of DEF, and long term performance from your heavy duty engine!

Better Coating, Better Performance.

Roadwarrior is the only manufacturer to use Metalcor® catalyst technology across its entire range of Diesel Oxidation Catalysts (DOCs) and Selective Catalytic Reduction catalysts (SCRs). Metalcor® catalysts feature high activity catalyst coatings fused to thinner, stronger, catalyst substrates to guarantee maximum performance under the harshest conditions.

Metalcor® catalyst coatings are designed and produced in our own labs. We then inspect each unit to ensure you get more fuel efficiency, lower consumption of DEF, and long term performance from your heavy duty engine!

Roadwarrior Has You Covered!

All Roadwarrior emissions parts carry a full value 12 month warranty.

LightningVolt lithium batteries carry a full value 30 month warranty.

To make the process hassle-free, our parts have a metal nameplate with the serial number, so even after 500,000 miles of service, it’s still easy to identify. This avoids the common problem of serial numbers printed on stickers that burn off after the first start-up, making them impossible to return. Our failsafe system allows us to work in your interests, honouring claims for on-road and off-road replacements, and giving you peace of mind.

And since Roadwarrior parts are designed to meet or exceed OEM specifications, you can rest easy knowing our direct fit parts will take the problems out of your aftertreatment without interfering with your OEM warranty.

Next Day Is Nice, Same Day is Better!​

A faulty emissions control system can cost you thousands in wasted man-hours as your heavy equipment sits in the shop awaiting a new part. Whether it’s a truck behind on orders, a bus that can’t take passengers, or heavy machinery delaying construction deadlines, Roadwarrior can get you moving again! 

Roadwarrior has twelve warehouses across the U.S.A. and Canada, which can deliver the most popular aftertreatment parts in 1-2 days. With over 1,000 DPFs, DOCs and SCRs on offer, Roadwarrior offers the largest aftertreatment catalogue.

*LightningVolt lithium batteries ship directly from Roadwarrior in Ontario, to ALL 50 states, including Alaska and Hawaii within 2-4 days.

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