If your vehicle is listed on the fitment table below, the product will fit your car - we guarantee it. All you need to do is to ensure that the vehicle's Year, Make, Model, Trim, and any other notes specified inside the fitment table are respected.
Included warranty:
For warranty coverage information, please see our
Warranty Policy.
Walker Products Genuine OE Produced NOx Sensors are built to meet the demands of today’s complex diesel and gasoline emission systems. Engineered and manufactured by Tier 1 OE suppliers, each sensor is produced with the same high-quality materials, exacting standards, and precision technology used by leading vehicle manufacturers around the world. These sensors play a critical role in monitoring and managing nitrogen oxide (NOx) emissions in selective catalytic reduction (SCR) systems. Accurate NOx measurement is essential for proper aftertreatment performance, helping to reduce emissions, protect vital components like diesel particulate filters (DPFs), and ensure long-term engine efficiency. Walker’s NOx Sensors offer a true plug-and-play solution, designed for seamless installation with OE connectors and harness lengths. Fleet-tested and field-proven, our sensors deliver dependable performance in extreme heat, vibration, and corrosive exhaust environments. Whether you're replacing a failed sensor or proactively servicing your emission system, trust Walker Products to provide OE-level quality, fit, and reliability. From daily drivers to Class 8 trucks, Walker NOx Sensors support a wide range of domestic and import applications. With expanding coverage, expert technical support, and a commitment to emission system excellence, Walker Products continues to deliver trusted solutions that keep vehicles running cleaner, longer.
Characteristics include:
Engineered for Precision – Features advanced sensing technology and exact OE materials for consistent, high-accuracy NOx detection in extreme conditions.
Fleet-Tested Reliability – Proven in demanding commercial and diesel applications for reduced downtime and fewer replacements.
Plug-and-Play Installation – Designed for direct OE replacement, reducing install time and eliminating compatibility issues.
OE Produced Quality – Built by Tier 1 OE manufacturers to ensure exact fit, function, and long-term durability for superior performance.
Accurate Emission Control – Delivers precise NOx readings to help maintain peak SCR system efficiency and lower emissions.
Some of the interchangeable part numbers are:
Customer Video Reviews
Watch genuine customer videos showing their upgrades and honest results of similar products
Fitment Table
This product is compatible with these vehicles:
Year
Make
Model
Notes
Position
2019
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2019
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2019
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2019
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2018
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2018
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2018
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2018
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2017
Chevrolet
Silverado 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2017
Chevrolet
Silverado 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2017
GMC
Sierra 2500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
2017
GMC
Sierra 3500 HD
6.6L
V engine
8 cylinders
4.06" bore
3.90" stroke
Downstream
See what other customers say:
Customer Reviews
Overall rating: 4.8 / 5 from 697 reviews.
Exact parts came in two days.
Already on Car, thus no pics.
This my second time buying from Partspionner.ca great parts quality parts fast shipping to your door no need to wait on parts counter for minutes save gas ;)
I had an excellent experience ordering from Parts Pioneer, my order was placed and shipped quickly and received. Excellent customer service, I will definitely use them again when needed and let many of my friends know about Part's Pioneer
The site was very easy to use. When I emailed with a question the response came quickly. I appreciated that you verified that the parts would fit my vehicle. I will use the site again.