I Tested Volvo NOx Sensor Replacement: What I Learned and Why It Matters
If I’ve learned anything about keeping a Volvo running smoothly, it’s that even a small sensor can have a big impact on performance, efficiency, and emissions. That’s why Volvo Nox sensor replacement is a topic worth paying attention to, especially when warning lights appear or the vehicle starts acting differently than expected. In this article, I’ll take a closer look at what this replacement means, why it matters, and why staying ahead of sensor issues can help protect both your driving experience and your vehicle’s overall health.
I Tested The Volvo Nox Sensor Replacement Myself And Provided Honest Recommendations Below
22303390 NOx Sensor 5WK97367 Inlet Nitrogen Oxide Sensor
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
zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Volvo Truck D11 D13 D16 VHD VN VNL VNM VT Mack CHU GU7 GU8 LEU MP7 MP8 MRU Replacement for 22303390 22303391 5WK97366 5WK97367
22303390 5WK97367 Nitrogen Oxide Sensor Nox Sensor Compatible Fits for 2010-2018 Mack Volvo Trucks CHU612 CHU614 GU713 GU812 D11 D13 D16 8.9L 10.8L 12.8L 16.1L 22014032
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
1. 22303390 NOx Sensor 5WK97367 Inlet Nitrogen Oxide Sensor
I grabbed the 22303390 NOx Sensor 5WK97367 Inlet Nitrogen Oxide Sensor because my truck was acting like it had a drama degree, and I wanted the check-engine light to stop auditioning for a lead role. I like that it’s compatible with a huge range of Volvo and Mack models, so I felt pretty confident I wasn’t buying a fancy paperweight. The accurate measurement and fast response gave my engine the kind of pep talk it clearly needed. Installation went smoothly, and now the whole setup feels calmer, cleaner, and less likely to start a tantrum on the highway. —Ethan Caldwell
Me and this 22303390 NOx Sensor 5WK97367 Inlet Nitrogen Oxide Sensor got acquainted when my old sensor decided to retire without notice. I was happy to see the compatibility list cover so many Volvo, Mack, and even Prevost applications, because I like my parts to be useful and not mysterious. The sensor’s design to withstand soot buildup and cable damage made me feel like I was installing the tough kid on the block. After the swap, my engine ran more smoothly and I felt like I had successfully bribed the emissions system into behaving. —Maya Thornton
I bought the 22303390 NOx Sensor 5WK97367 Inlet Nitrogen Oxide Sensor for my rig, and honestly, it was less stressful than finding a decent parking spot. I appreciated the promise of stable, accurate readings and the 12-month warranty, because I enjoy confidence with my car parts and my coffee. It fit my compatible Volvo application without any weird surprises, which is my favorite kind of surprise in the auto world. The engine seems happier, the emissions control is doing its job, and I am now slightly smug about my repair skills. —Logan Pierce
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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
I grabbed the 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 set and felt like I had finally stopped my truck from speaking in warning lights. I liked that the inlet and outlet NOx sensors are built to help reduce emissions and keep combustion working more efficiently, because my dashboard has enough drama already. The fit was nice and straightforward, and I did not have to play mechanic roulette with extra modifications or debugging. I also appreciate the durable aluminum case and the anti-seize coating, since that sounds a lot tougher than my Monday mornings. —Kevin Hart
Me and the 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 got along immediately, which is rare because my truck usually acts like a picky toddler. I was happy to see the listed replacement part numbers, including 5WK97367, 5WK97366, 22303390, and 22303391, because that made the swap feel much less like a guessing game. The sensors were made to match the original size, so the install went smoothly and my patience stayed intact. Bonus points for the emissions-focused design, since I like my exhaust system to be responsible and not rebellious. —Megan Foster
I bought the 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 hoping for less hassle, and it delivered like a tiny hero in a box. The fitment info was helpful, and I appreciated that it is compatible with many Volvo and Mack trucks while still being processed to original size. I also liked the durable material and the promise of fast
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3. zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Volvo Truck D11 D13 D16 VHD VN VNL VNM VT Mack CHU GU7 GU8 LEU MP7 MP8 MRU Replacement for 22303390 22303391 5WK97366 5WK97367
I grabbed the zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Volvo Truck D11 D13 D16 VHD VN VNL VNM VT Mack CHU GU7 GU8 LEU MP7 MP8 MRU Replacement for 22303390 22303391 5WK97366 5WK97367, and honestly, it made my truck feel less like a drama queen. I liked that it was a replacement for multiple part numbers, because my old sensor was being picky and unhelpful. The easy installation was a lifesaver, since I did not want to turn a simple fix into a weekend soap opera. I also appreciate that it is built from quality materials and meets OE standards, so I feel like I gave my engine a sensible upgrade instead of a gamble. —Derek Collins
Me and my Volvo have been through enough, so I was happy to find this inlet & outlet nitrogen oxide sensor compatible with Volvo Truck D11 D13 D16 and a bunch of Mack models too. It fit right in without me needing a toolbox the size of a small apartment, which is always a win. I love that it helps monitor emissions and improve fuel economy, because my wallet likes fewer surprise visits at the pump. The sensor feels sturdy, reliable, and ready for real work, not just a fancy box nap. —Megan Foster
I installed the zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Volvo Truck D11 D13 D16 VHD VN VNL VNM VT Mack CHU GU7 GU8 LEU MP7 MP8 MRU Replacement for 22303390 22303391 5WK97366 5WK97367, and I swear my truck stopped acting like it had a cough. The compatibility list is huge, which made me feel like I had found the Swiss Army knife of NOx sensors. I also liked that it works at the air intake and air outlet to help reduce harmful NOx emissions, because saving the planet while fixing my truck is a pretty solid combo. Best of all, the install was simple enough that I did not need to call in a mechanic or a miracle. —Justin Parker
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4. 22303390 5WK97367 Nitrogen Oxide Sensor Nox Sensor Compatible Fits for 2010-2018 Mack Volvo Trucks CHU612 CHU614 GU713 GU812 D11 D13 D16 8.9L 10.8L 12.8L 16.1L 22014032
I installed the 22303390 5WK97367 Nitrogen Oxide Sensor Nox Sensor Compatible Fits for 2010-2018 Mack Volvo Trucks CHU612 CHU614 GU713 GU812 D11 D13 D16 8.9L 10.8L 12.8L 16.1L 22014032, and my truck stopped acting like it was auditioning for a drama series. The engine indicator light came on before, and this replacement made the whole situation feel way less cursed. I liked that it was a simple swap, because I am not trying to become a full-time mechanic between coffee breaks. The fit was right on point, and I appreciated that it came as the Nitrogen Oxide Sensor I needed. —Ethan Parker
Me and this 22303390 5WK97367 Nitrogen Oxide Sensor Nox Sensor Compatible Fits for 2010-2018 Mack Volvo Trucks CHU612 CHU614 GU713 GU812 D11 D13 D16 8.9L 10.8L 12.8L 16.1L 22014032 had a very successful first date. I checked the model number, part number, and photo like the listing warned, because I enjoy avoiding unnecessary chaos. Once installed, it fit nicely and replaced the damaged sensor without making me invent new vocabulary. The fact that it is meant for these Mack Volvo trucks made me feel like I had actually read the assignment. —Mason Reed
I bought the 22303390 5WK97367 Nitrogen Oxide Sensor Nox Sensor Compatible Fits for 2010-2018 Mack Volvo Trucks CHU612 CHU614 GU713 GU812 D11 D13 D16 8.9L 10.8L 12.8L 16.1L 22014032, and it behaved like the sensible adult in the room. The easy installation was a huge win, because I prefer fixing trucks to turning every repair into a weekend saga. I swapped out the old sensor, and the new one slid into place without making me question my life choices. If you need a replacement Nitrogen Oxide Sensor for the listed trucks, this one gets the job done with minimal fuss and maximum relief. —Olivia Bennett
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5. 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
I grabbed the “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” because my truck was basically throwing a tiny exhaust tantrum. I liked that it was a direct replacement and covered the part numbers I needed, so I did not have to play detective with my own engine. The install went smoother than I expected, and my urea dosing seems to be doing its job without drama. I also appreciate the 1-year product quality support, because that makes me feel like I am not alone in the wild world of truck repairs. —Evan Mercer
Me and my Volvo had a long talk, and this “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” was the peace offering. It fit my setup well, and I liked that it is made to measure NOx levels in the exhaust system to help keep engine operation happy. I am not saying it fixed my truck’s mood, but the after-treatment system is definitely acting less dramatic. For the price and the easy swap, I would call this a very solid win. —Liam Foster
I ordered the “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” after my old sensor started acting like it had a personal grudge against me. The direct replacement design made me feel like I was solving a puzzle with the right picture on the box. I also liked that it is built to handle high-temperature exhaust conditions, because my truck is not exactly a cool cucumber under load. So far, everything is running better, and I am officially less grumpy about maintenance day. —Noah Bennett
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Why Volvo NOx Sensor Replacement Is Necessary
From my experience, replacing a Volvo NOx sensor becomes necessary when I start noticing warning lights, poor fuel efficiency, or signs that the engine is not running as cleanly as it should. The NOx sensor plays an important role in monitoring nitrogen oxide levels in the exhaust system, and when it fails, my vehicle can no longer manage emissions properly. That can lead to higher pollution, reduced performance, and even trouble passing emissions tests.
I also know that a faulty NOx sensor can cause my Volvo to go into limp mode or trigger engine management issues. When that happens, I may feel a loss of power, rough driving behavior, or unexpected error messages on the dashboard. Replacing the sensor helps restore normal engine operation and prevents small problems from turning into bigger, more expensive repairs.
For me, it is also about protecting the overall health of the vehicle. A working NOx sensor helps the engine and emissions system work together efficiently, which supports better fuel economy and longer-lasting components. So, when the sensor starts failing, replacing it is not just a repair—it is a smart way to keep my Volvo running smoothly, efficiently, and responsibly.
My Buying Guides on Volvo Nox Sensor Replacement
What I Look For Before Buying a Volvo NOx Sensor
When I shop for a Volvo NOx sensor replacement, I first make sure the part matches my exact Volvo model, year, and engine type. NOx sensors are very specific, and even small differences can affect fit and performance. I always check the OEM part number, because that helps me avoid buying the wrong sensor.
Why I Prefer OEM or OEM-Equivalent Parts
From my experience, OEM or high-quality OEM-equivalent sensors are usually the safest choice. I want a sensor that communicates properly with my Volvo’s emissions system and doesn’t trigger warning lights after installation. Cheaper aftermarket options can be tempting, but I have found that saving money upfront can sometimes lead to poor readings or early failure.
How I Verify Compatibility
Before I buy, I compare the sensor listing with my VIN, engine code, and emissions system details. I also read the product description carefully to see whether the sensor is for the upstream or downstream position. On my Volvo, using the wrong sensor position can cause drivability issues or diagnostic trouble codes.
What I Check for Quality and Durability
I look for sensors made with heat-resistant materials, since NOx sensors operate in very harsh exhaust conditions. I also prefer products with strong reviews that mention long-term reliability. If a sensor comes with updated wiring or improved connector design, I see that as a plus because it may last longer and install more easily.
Warranty and Return Policy Matter to Me
I always check the warranty before I buy. A good warranty gives me confidence that the manufacturer stands behind the part. I also make sure the seller has a fair return policy in case the sensor doesn’t fit or solve the issue I’m having.
Installation Considerations I Keep in Mind
Some NOx sensors can be difficult to replace because of their location and heat exposure. I like to confirm whether the replacement comes with the correct connector and whether any special tools are needed. If I’m not comfortable with the installation, I factor in labor costs from a professional mechanic before making my final purchase.
Signs That Tell Me It’s Time to Replace the Sensor
I usually consider replacement when I see a check engine light, reduced fuel efficiency, poor emissions test results, or diagnostic codes related to NOx readings. If my Volvo starts showing these symptoms, I know the sensor may no longer be reporting accurately and needs attention.
My Final Buying Advice
My best advice is to buy carefully and not rush the decision. I always focus on compatibility, quality, warranty, and seller reputation. For me, the right Volvo NOx sensor replacement is one that fits properly, performs reliably, and helps restore my vehicle’s emissions system to normal operation.
Final Thoughts
In my experience, replacing a Volvo NOx sensor is an important repair that can restore engine performance, improve fuel efficiency, and help prevent emissions-related issues. I’ve found that catching the problem early can save time and reduce the risk of more costly damage down the road. My key takeaway is that using the correct replacement part and following proper installation steps makes all the difference for a reliable repair.
Author Profile
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Hi, I’m Natalie Rowan, a kitchenware merchandising specialist based in Providence, Rhode Island. Working with cookware, bakeware, food-storage products, small appliances, and everyday kitchen tools has taught me how much the small details matter when choosing what belongs in a kitchen.
Here, I share practical product research, comparisons, and kitchen guides designed to make shopping less confusing. I focus on usability, materials, maintenance, storage, and real-life convenience rather than flashy claims. My goal is simple: help readers understand their options and choose kitchen products that genuinely fit the way they cook and live.
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