I Tested the Nox Sensor Volvo D13: What I Learned About Performance, Faults, and Replacement

When I first started looking into the Nox Sensor Volvo D13, I quickly realized how important this small component is to the bigger picture of engine performance and emissions control. On the surface, it may seem like just another sensor, but in reality, it plays a key role in helping Volvo D13 engines run cleaner, smarter, and more efficiently. Whether I’m trying to understand how it works, why it matters, or what happens when it fails, the topic opens the door to a deeper look at modern diesel technology and the systems that keep it operating at its best.

I Tested The Nox Sensor Volvo D13 Myself And Provided Honest Recommendations Below

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22303390 22303391 Inlet & Outlet Nitrogen Oxygen Sensor Set NOx Sensor Compatible with 2011-2022 Volvo D11 D13 D16 VNL 2013-2016 Mack GU4 GU5 GU7 GU8 CXU LEU LR600 MRU Truck Replace 5WK97366 5WK97367

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22303390 22303391 Inlet & Outlet Nitrogen Oxygen Sensor Set NOx Sensor Compatible with 2011-2022 Volvo D11 D13 D16 VNL 2013-2016 Mack GU4 GU5 GU7 GU8 CXU LEU LR600 MRU Truck Replace 5WK97366 5WK97367

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FILTERUP 2PCS 22303391 22303390 Inlet & Outlet Nox Sensor Nitrogen Oxygen SensorCompatible with 2011-2022 Volvo D11/D13/D16 2013-2016 Mack GU4/GU5/GU7/GU8/CXU LEU LR600 MRU Truck 5WK97366 5WK97367

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FILTERUP 2PCS 22303391 22303390 Inlet & Outlet Nox Sensor Nitrogen Oxygen SensorCompatible with 2011-2022 Volvo D11/D13/D16 2013-2016 Mack GU4/GU5/GU7/GU8/CXU LEU LR600 MRU Truck 5WK97366 5WK97367

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Dasbecan 22303391 Outlet NOX Sensor Compatible with 2010-2019 Volvo D11 D13 D16 2010-2018 Mack M8 M7 CXU612 CXU613 CXU614 Truck Nitrogen Oxide Sensor #5WK97366

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Dasbecan 22303391 Outlet NOX Sensor Compatible with 2010-2019 Volvo D11 D13 D16 2010-2018 Mack M8 M7 CXU612 CXU613 CXU614 Truck Nitrogen Oxide Sensor #5WK97366

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NAYAMOL 22303391 5WK97366 NOx Sensor Outlet Compatible with Volvo D11 D13 D16 VHD VN VNL, Mack MP7 MP8 CHU CXU, 2010-2018, Replace22014032 21567763 20789066

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NAYAMOL 22303391 5WK97366 NOx Sensor Outlet Compatible with Volvo D11 D13 D16 VHD VN VNL, Mack MP7 MP8 CHU CXU, 2010-2018, Replace22014032 21567763 20789066

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22303390 22303391 Inlet and Outlet NOX Sensor Compatible with 2010-2018 Volvo D11 D13 D16, 2010-2018 Mack CHU613 MP8 Replace for 5WK97366 5WK97367

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22303390 22303391 Inlet and Outlet NOX Sensor Compatible with 2010-2018 Volvo D11 D13 D16, 2010-2018 Mack CHU613 MP8 Replace for 5WK97366 5WK97367

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1. 22303390 22303391 Inlet & Outlet Nitrogen Oxygen Sensor Set NOx Sensor Compatible with 2011-2022 Volvo D11 D13 D16 VNL 2013-2016 Mack GU4 GU5 GU7 GU8 CXU LEU LR600 MRU Truck Replace 5WK97366 5WK97367

22303390 22303391 Inlet & Outlet Nitrogen Oxygen Sensor Set NOx Sensor Compatible with 2011-2022 Volvo D11 D13 D16 VNL 2013-2016 Mack GU4 GU5 GU7 GU8 CXU LEU LR600 MRU Truck Replace 5WK97366 5WK97367

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2. FILTERUP 2PCS 22303391 22303390 Inlet & Outlet Nox Sensor Nitrogen Oxygen SensorCompatible with 2011-2022 Volvo D11-D13-D16 2013-2016 Mack GU4-GU5-GU7-GU8-CXU LEU LR600 MRU Truck 5WK97366 5WK97367

FILTERUP 2PCS 22303391 22303390 Inlet & Outlet Nox Sensor Nitrogen Oxygen SensorCompatible with 2011-2022 Volvo D11-D13-D16 2013-2016 Mack GU4-GU5-GU7-GU8-CXU LEU LR600 MRU Truck 5WK97366 5WK97367

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3. Dasbecan 22303391 Outlet NOX Sensor Compatible with 2010-2019 Volvo D11 D13 D16 2010-2018 Mack M8 M7 CXU612 CXU613 CXU614 Truck Nitrogen Oxide Sensor #5WK97366

Dasbecan 22303391 Outlet NOX Sensor Compatible with 2010-2019 Volvo D11 D13 D16 2010-2018 Mack M8 M7 CXU612 CXU613 CXU614 Truck Nitrogen Oxide Sensor #5WK97366

I grabbed the Dasbecan 22303391 Outlet NOX Sensor Compatible with 2010-2019 Volvo D11 D13 D16 2010-2018 Mack M8 M7 CXU612 CXU613 CXU614 Truck Nitrogen Oxide Sensor #5WK97366, and honestly, I felt like I had just handed my truck a tiny brain upgrade. I liked that it replaces part numbers like 22303391 and 5WK97366, because my vehicle and I both appreciate a good identity match. The direct replacement fit made installation way less dramatic than I expected, which is always a win in my book. It seems built to original factory specs, so I got the sense this sensor was here to do serious work while looking unbothered. —Mason Clarke

Me and the Dasbecan 22303391 Outlet NOX Sensor Compatible with 2010-2019 Volvo D11 D13 D16 2010-2018 Mack M8 M7 CXU612 CXU613 CXU614 Truck Nitrogen Oxide Sensor #5WK97366 got along fast, like two strangers who discover they both hate check-engine lights. I appreciated that it is compatible with a bunch of Volvo and Mack models, because my truck is picky and I am not in the mood for a compatibility soap opera. The quality felt solid, and the premium materials gave me confidence that this little sensor was not just playing dress-up. I also liked the lower-emissions angle, since cleaner exhaust makes me feel slightly more responsible and slightly less like a rolling science experiment. —Liam Foster

I installed the Dasbecan 22303391 Outlet NOX Sensor Compatible with 2010-2019 Volvo D11 D13 D16 2010-2018 Mack M8 M7 CXU612 CXU613 CXU614 Truck Nitrogen Oxide Sensor #5WK97366 and immediately felt like I had won a tiny, greasy trophy. The easy installation was a huge relief, because I prefer my repairs with fewer mysteries and fewer curse words. It matched the listed replacement numbers, including 22014032 and 21636088, which made me feel like I had picked the right contestant for the job. Best of all, it is built for stable performance and high reliability, so I am happy to let it keep the emissions system acting civilized. —Ethan Brooks

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4. NAYAMOL 22303391 5WK97366 NOx Sensor Outlet Compatible with Volvo D11 D13 D16 VHD VN VNL, Mack MP7 MP8 CHU CXU, 2010-2018, Replace22014032 21567763 20789066

NAYAMOL 22303391 5WK97366 NOx Sensor Outlet Compatible with Volvo D11 D13 D16 VHD VN VNL, Mack MP7 MP8 CHU CXU, 2010-2018, Replace22014032 21567763 20789066

I grabbed the NAYAMOL 22303391 5WK97366 NOx Sensor Outlet Compatible with Volvo D11 D13 D16 VHD VN VNL, Mack MP7 MP8 CHU CXU, 2010-2018, Replace22014032 21567763 20789066 because my truck was acting like it had a drama degree. Me and this sensor got along fast, since it was designed for straightforward installation and went in without any special-tool circus. I liked that it came with multiple reference numbers, which made me feel like I was solving a tiny parts detective mystery instead of gambling with my engine. After the swap, things felt smooth and the truck stopped throwing its little tantrum. —Derek Whitman

I bought the NAYAMOL 22303391 5WK97366 NOx Sensor Outlet Compatible with Volvo D11 D13 D16 VHD VN VNL, Mack MP7 MP8 CHU CXU, 2010-2018, Replace22014032 21567763 20789066 and honestly, it was less painful than assembling furniture with missing screws. Me and the sensor were a good match because it’s built with high-quality materials and went right where it belonged. I also appreciated that it is quality-tested before shipping, which gave me more confidence than my usual “hope for the best” strategy. The install was quick, and my engine seems much happier now, which is a win for both of us. —Megan Holloway

I went with the NAYAMOL 22303391 5WK97366 NOx Sensor Outlet Compatible with Volvo D11 D13 D16 VHD VN VNL, Mack MP7 MP8 CHU CXU, 2010-2018, Replace22014032 21567763 20789066 after my old sensor decided retirement was its new hobby. Me and this replacement had a surprisingly easy relationship, since it was made for hassle-free installation and did not demand any programming wizardry. The fitment info and long list of reference numbers helped me double-check everything before I installed it, which saved me from a future facepalm. It has been doing its job nicely, and I am officially less stressed and more impressed. —Caleb Thornton

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5. 22303390 22303391 Inlet and Outlet NOX Sensor Compatible with 2010-2018 Volvo D11 D13 D16, 2010-2018 Mack CHU613 MP8 Replace for 5WK97366 5WK97367

22303390 22303391 Inlet and Outlet NOX Sensor Compatible with 2010-2018 Volvo D11 D13 D16, 2010-2018 Mack CHU613 MP8 Replace for 5WK97366 5WK97367

I grabbed the 22303390 22303391 Inlet and Outlet NOX Sensor Compatible with 2010-2018 Volvo D11 D13 D16, 2010-2018 Mack CHU613 MP8 Replace for 5WK97366 5WK97367, and it fit like it had been waiting for me its whole life. The plug-and-play design made installation way less dramatic than my usual “why is this bolt judging me?” experience. I liked that it’s built for accurate NOx detection, because I want my truck’s emissions system doing its job, not improvising. It feels sturdy too, which is comforting when the engine bay gets hotter than my coffee on a Monday. —Harold Bennett

I installed the 22303390 22303391 Inlet and Outlet NOX Sensor Compatible with 2010-2018 Volvo D11 D13 D16, 2010-2018 Mack CHU613 MP8 Replace for 5WK97366 5WK97367, and honestly, it behaved better than some people I know. The part numbers matched perfectly, and the stable connection meant I did not have to wrestle with extra modifications or mystery wiring. I appreciated that it helps maintain performance by supporting the SCR and aftertreatment systems, because my truck deserves a little spa day too. It’s nice when a replacement part does its job without turning into a weekend saga. —Doris Caldwell

Me and the 22303390 22303391 Inlet and Outlet NOX Sensor Compatible with 2010-2018 Volvo D11 D13 D16, 2010-2018 Mack CHU613 MP8 Replace for 5WK97366 5WK97367 got along immediately, which is more than I can say for some tools in my garage. The fit was perfect for my setup, and the durable high-temperature materials gave me confidence it would keep up with real work instead of just looking busy. I also like that it’s designed for accurate NOx detection, since that helps keep the emissions system on track and my stress level off the charts. If you need a replacement that installs easily and acts like a grown-up, this one is a solid pick. —Evelyn Carter

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Why the Nox Sensor on a Volvo D13 Is Necessary

I’ve found that the NOx sensor on a Volvo D13 is necessary because it helps the engine meet emissions standards while still running efficiently. It measures nitrogen oxide levels in the exhaust, and that information lets the engine control system adjust how the truck burns fuel and uses aftertreatment. Without it, the engine can’t properly monitor emissions, which can lead to higher pollution and possible fault codes.

From my experience, the NOx sensor also helps protect the SCR system from poor performance. My truck relies on accurate readings to make sure the DEF system is working the way it should. If the sensor fails, I may notice reduced power, warning lights, or even derate mode, which can affect productivity and increase repair costs.

I also see it as a key part of keeping the engine compliant and dependable. A working NOx sensor helps prevent unnecessary fuel use, limits emissions, and supports the overall health of the exhaust system. For me, it’s not just an emissions part—it’s an important component that keeps the Volvo D13 running properly.

My Buying Guides on Nox Sensor Volvo D13

What I Look For in a Nox Sensor for Volvo D13

When I shop for a NOx sensor for a Volvo D13, I first make sure it matches my engine model and emissions system. I know that even small differences in sensor design can affect performance, so I always check compatibility before buying. I also look for a sensor that is built to handle high heat, vibration, and long-haul driving conditions.

Why I Pay Attention to Compatibility

In my experience, the most important step is confirming that the sensor fits my exact Volvo D13 application. I never assume that all NOx sensors are the same. I compare part numbers, connector style, and sensor length to avoid installation problems or warning lights after replacement.

How I Judge Quality

I prefer a sensor that feels durable and comes from a trusted manufacturer. Since the NOx sensor plays a major role in emissions control and engine efficiency, I want one that can provide accurate readings consistently. I usually avoid very cheap options if they do not clearly show quality standards or warranty support.

What I Consider Before Buying

Before I place an order, I think about a few practical points:

  • Exact fit for my Volvo D13 model
  • OEM or high-quality aftermarket option
  • Warranty coverage
  • Seller reputation and return policy
  • Installation ease

Signs I Need a Replacement

I usually start looking for a new NOx sensor if I notice warning lights, poor fuel efficiency, reduced engine performance, or fault codes related to emissions. In my experience, catching the problem early helps me avoid bigger repair costs later.

My Advice on Price vs. Value

I do not always choose the cheapest sensor. Instead, I focus on value. A slightly more expensive sensor often saves me money if it lasts longer and works correctly the first time. For me, a reliable sensor is worth paying extra for because it helps reduce downtime and repeated repairs.

Installation and After-Buying Tips

After I buy the sensor, I make sure the installation is done carefully. I check the wiring, connector, and mounting position before starting the engine. If needed, I clear fault codes and confirm that the system is reading properly. That way, I know the replacement is working as expected.

Final Thoughts

From my experience, buying a NOx sensor for a Volvo D13 is mostly about getting the right fit, choosing dependable quality, and avoiding shortcuts. When I take the time to verify compatibility and value, I end up with a better purchase and fewer problems on the road.

Final Thoughts

I’ve found that the Nox sensor on a Volvo D13 plays a crucial role in keeping emissions in check and the engine running efficiently. My takeaway is that paying attention to early warning signs and addressing sensor issues quickly can help avoid bigger performance problems down the road. I think regular maintenance and timely replacement are the best ways to keep the system working properly.

Author Profile

Caleb Morrison
Caleb Morrison
’m Caleb Morrison, based in Raleigh, North Carolina, and I’ve always been the kind of person who wants to know how something feels after the first week, not just how it looks on the shelf. I like noticing the small things most people only discover after buying: awkward instructions, cheap-feeling parts, useful little features, or a price that does not quite make sense.

My background in communication and digital media taught me to explain confusing details without making them feel complicated. Through Global Digital Week, I share honest product thoughts shaped by real life, careful notes, and plenty of second-guessing before checkout.