Looking for the best engine inlet sensors to enhance your vehicle’s performance? We’ve tested and reviewed top-rated sensors to help you find the perfect one, offering a simple, clear, and insightful guide to upgrade your engine with confidence.
Engine inlet sensors are vital for keeping your vehicle running smoothly. They monitor air and gas, ensuring optimal performance. This guide will help you find the best sensors for your needs.
We’ve tested and reviewed top-rated sensors to make your choice easy. From durability to accuracy, we’ve got you covered. Discover sensors that boost efficiency and reduce emissions.
Get ready to upgrade your vehicle with confidence. Our guide is simple, clear, and packed with insights. Let’s find the perfect sensor for your engine!
List of Top 10 Engine Inlet Sensors
| Image | Title | Best For | Price |
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zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Mercedes-Benz Freightliner Cascadia Western Star Engine Detroit Diesel DDE DD13 DD15 DD16 Replacement for 5WK97339A 5WK97338A |
This NOx sensor is perfect for Mercedes-Benz, Freightliner, and Western Star truck owners with Detroit Diesel engines. It’s easy to install and helps reduce emissions, improve fuel economy, and keep your engine running smoothly. |
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YINAVAGAD 0101532228 A0101532228 5WK97338A NOx Sensor Upstream Inlet Nitrogen Oxide Sensor for Detroit DD13 DD15 DD16 Engine, for Freightliner Cascadia 2012-2022, for 2016-2022 Western Star 5700XE |
This product is perfect for truck owners and fleet managers who want reliable performance, better fuel efficiency, and a sensor that works fast to keep their Detroit DD13, DD15, DD16 engines running at their best. It’s made for anyone who values long-lasting quality and real-time monitoring. |
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2PCS 4326870 4326874 Inlet & Outlet NOx Sensor Set 3687930 4326874RX 5WK96740B 5WK96741B Compatible with Cummins ISX 11.9L 15.0L Engines for Kenworth & Peterbilt Trucks |
This set is perfect for truck owners and fleet managers who run Kenworth or Freightliner rigs with Cummins ISX engines. It’s made for anyone who needs a reliable, direct-fit NOx sensor to keep their trucks running strong and compliant. |
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HQPASFY 5WK97338A NOx Sensor Inlet Nitrogen Oxide Sensor Compatible with Freightliner Cascadia, Western Star Engine Detroit Diesel DDE DD13 DD15 Replace# A0101532228 |
This HQPASFY NOx sensor is perfect for truck owners and fleet managers who need a reliable replacement for their Freightliner, Western Star, or Detroit Diesel engines. It’s built tough to handle harsh conditions and keeps engines running smoothly. |
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INGKAN 2236409PE Inlet Nox Sensor Nitrogen Oxide Senso Fits for MX13 PACCAR Engine Replace OE 2236409 2236409PE 2236409PEX |
Truck drivers with MX13 PACCAR engines need a quick and reliable sensor replacement. |
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NOx Nitrogen Oxide Upstream Sensor Compatible with Mercedes-Benz Replacement for Detroit Diesel DD13 DD15 DD16 Compatible with Freightliner 2012-2022 Cascadia Replaces 0101532228 A0101532228 5WK97338A |
This product is perfect for truck owners, fleet managers, and mechanics who need a reliable NOx sensor replacement for Mercedes-Benz, Detroit Diesel, Freightliner, or Western Star engines. It’s ideal for anyone who wants a perfect fit, OEM-level quality, and smooth engine performance. |
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Automost Inlet & Outlet NOx Sensor – Compatible with 2013-2018 Cummins Engine ISX 15.0, ISX 11.9, Downstream & Upstream Nitrogen Oxide Sensor, Replace #5WK96740B, 3687930, 5WK96749B, 2872942 |
Truck drivers with 2013‑2018 Cummins engines need this NOx sensor. |
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NTK AJ0013 Air Charge Temperature Sensor |
The NTK AJ0013 Air Charge Temperature Sensor is perfect for car owners who want to keep their engine running smoothly. It’s easy to replace and vital for better fuel efficiency. |
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3687930 3687930RX 2872944RX 4326870 5WK96740B Inlet Nitrogen Oxide Sensor NOx Sensor Compatible with Cummins 2013-2018 11.9L 15L ISX15 Engine |
This NOx sensor is perfect for truck owners with a Cummins 2013-2018 11.9L or 15L ISX15 engine. It’s easy to install and keeps your engine running smoothly. |
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Boatok NOx Sensor 68210084AA Nitrogen Oxide Sensors Inlet Upstream Compatible with Dodge Ram 2500 3500 4500 5500 2013-2018 L6 408 Diesel 6.7L Replacement for 5WK96742B 904-6011 904-6030 4326873 |
This NOx sensor is perfect for Dodge Ram owners with 2013-2018 models. It’s ideal for those needing a reliable replacement for their 6.7L diesel engine. |
Detailed Reviews
Finding the best engine inlet sensors is easy with this expert guide.
We choose top models based on real tests and user reviews.
These picks give top performance, easy fit, and budget smart choices.
Read on to unlock the sensor that fits your truck perfectly.
1. zayody Inlet & Outlet NOx Sensor Nitrogen Oxide Sensor Compatible with Mercedes-Benz Freightliner Cascadia Western Star Engine Detroit Diesel DDE DD13 DD15 DD16 Replacement for 5WK97339A 5WK97338A
The Zayody Inlet & Outlet NOx Sensor is a reliable replacement for Mercedes-Benz, Freightliner, and Western Star engines. It fits Detroit Diesel DDE DD13, DD15, and DD16 models perfectly. This sensor is compatible with multiple part numbers, making it a versatile choice.
It works with 2012-2022 Freightliner Cascadia and 2016-2022 Western Star engines. The sensor is made of quality materials and meets OE standards. It ensures stable performance and long service life.
This sensor monitors and adjusts emissions, reducing harmful NOx and improving fuel economy. Installation is quick and easy, saving you time and effort. Upgrade your vehicle with this durable and efficient sensor.
| Pros | Cons |
|---|---|
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Perfect For:
This NOx sensor is perfect for Mercedes-Benz, Freightliner, and Western Star truck owners with Detroit Diesel engines. It’s easy to install and helps reduce emissions, improve fuel economy, and keep your engine running smoothly.
Ready to Purchase?
2. YINAVAGAD 0101532228 A0101532228 5WK97338A NOx Sensor Upstream Inlet Nitrogen Oxide Sensor for Detroit DD13 DD15 DD16 Engine, for Freightliner Cascadia 2012-2022, for 2016-2022 Western Star 5700XE
The YINAVAGAD NOx Sensor is a reliable replacement for your vehicle’s nitrogen oxide sensor. It fits Detroit DD13, DD15, and DD16 engines and works with Freightliner Cascadia and Western Star 5700XE models. This sensor ensures your engine runs smoothly and efficiently.
It activates quickly, monitors in real-time, and improves fuel efficiency. These features help your engine perform at its best while reducing fuel waste.
Every sensor undergoes rigorous quality checks and comes with a 12-month warranty. You can trust it for long-lasting, dependable performance.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for truck owners and fleet managers who want reliable performance, better fuel efficiency, and a sensor that works fast to keep their Detroit DD13, DD15, DD16 engines running at their best. It’s made for anyone who values long-lasting quality and real-time monitoring.
Ready to Purchase?
3. 2PCS 4326870 4326874 Inlet & Outlet NOx Sensor Set 3687930 4326874RX 5WK96740B 5WK96741B Compatible with Cummins ISX 11.9L 15.0L Engines for Kenworth & Peterbilt Trucks
This NOx Sensor Set is built for Cummins ISX 11.9L and 15L engines. It fits Freightliner, Kenworth, and Peterbilt trucks from 2013–2018. Always check fitment before buying.
Each sensor uses factory-style connectors for easy install. Strong housing resists heat and vibration. Performance stays stable on the road.
You get both inlet and outlet sensors in one set. The design is plug-and-play for quick replacement. Packaged safely to prevent damage.
| Pros | Cons |
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Perfect For:
This set is perfect for truck owners and fleet managers who run Kenworth or Freightliner rigs with Cummins ISX engines. It’s made for anyone who needs a reliable, direct-fit NOx sensor to keep their trucks running strong and compliant.
Ready to Purchase?
4. HQPASFY 5WK97338A NOx Sensor Inlet Nitrogen Oxide Sensor Compatible with Freightliner Cascadia, Western Star Engine Detroit Diesel DDE DD13 DD15 Replace# A0101532228
The HQPASFY NOx Sensor is built for tough engines. It gives accurate readings fast. It helps keep your fuel use efficient and emissions low.
It fits many Freightliner and Western Star models. Backed by a 12-month warranty, it’s made to last.
| Pros | Cons |
|---|---|
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Perfect For:
This HQPASFY NOx sensor is perfect for truck owners and fleet managers who need a reliable replacement for their Freightliner, Western Star, or Detroit Diesel engines. It’s built tough to handle harsh conditions and keeps engines running smoothly.
Ready to Purchase?
5. INGKAN 2236409PE Inlet Nox Sensor Nitrogen Oxide Senso Fits for MX13 PACCAR Engine Replace OE 2236409 2236409PE 2236409PEX
The INGKAN 2236409PE Inlet Nox Sensor is a perfect fit for MX13 PACCAR engines. It replaces OE parts like 2236409, 2236409PE, and 2236409PEX. This nitrogen oxide sensor ensures your engine runs smoothly.
Made of high-quality materials, it’s wear-resistant and corrosion-resistant. It monitors exhaust gas and sends data to the ECU for optimal engine performance.
With easy installation, it’s a convenient replacement for damaged parts. INGKAN guarantees quality and reliability, backed by years of experience in auto parts.
| Pros | Cons |
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Perfect For:
Truck drivers with MX13 PACCAR engines need a quick and reliable sensor replacement.
They can install the INGKAN 2236409PE sensor fast and keep their wheels smoothly running.
Ready to Purchase?
6. NOx Nitrogen Oxide Upstream Sensor Compatible with Mercedes-Benz Replacement for Detroit Diesel DD13 DD15 DD16 Compatible with Freightliner 2012-2022 Cascadia Replaces 0101532228 A0101532228 5WK97338A
This NOx sensor replaces the original part. It fits Mercedes‑Benz and Freightliner trucks. It helps keep emissions low.
The sensor works before the catalytic converter. It tells the engine how much urea to add.
Made with high‑quality parts, it passes strict testing. Get a product that matches your truck.
| Pros | Cons |
|---|---|
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Perfect For:
This product is perfect for truck owners, fleet managers, and mechanics who need a reliable NOx sensor replacement for Mercedes-Benz, Detroit Diesel, Freightliner, or Western Star engines. It’s ideal for anyone who wants a perfect fit, OEM-level quality, and smooth engine performance.
Ready to Purchase?
7. Automost Inlet & Outlet NOx Sensor – Compatible with 2013-2018 Cummins Engine ISX 15.0, ISX 11.9, Downstream & Upstream Nitrogen Oxide Sensor, Replace #5WK96740B, 3687930, 5WK96749B, 2872942
The Automost NOx Sensor is compatible with 2013-2018 Cummins engines. It works with ISX 15.0 and ISX 11.9 models. This sensor fits Freightliner Cascadia and Kenworth trucks like T680 and W900.
It replaces OE parts like 5WK96740B and 2872942. The inlet and outlet sensors are included. They ensure accurate NOx measurements for your engine.
Automost offers a 2-year coverage plan. Verify fitment before ordering. Contact us for questions or support.
| Pros | Cons |
|---|---|
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Perfect For:
Truck drivers with 2013‑2018 Cummins engines need this NOx sensor.
Ready to Purchase?
8. NTK AJ0013 Air Charge Temperature Sensor
The NTK AJ0013 Air Charge Temperature Sensor keeps your engine running right. It reports the temperature of the air coming in. This helps the engine stay smooth and efficient.
It is vital for adjusting the air/fuel ratio. The sensor is usually found in the air inlet ducting. No special tools are needed to replace it.
This sensor is vehicle specific. Don’t confuse it with an ambient temperature sensor.
| Pros | Cons |
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Perfect For:
The NTK AJ0013 Air Charge Temperature Sensor is perfect for car owners who want to keep their engine running smoothly. It’s easy to replace and vital for better fuel efficiency.
Ready to Purchase?
9. 3687930 3687930RX 2872944RX 4326870 5WK96740B Inlet Nitrogen Oxide Sensor NOx Sensor Compatible with Cummins 2013-2018 11.9L 15L ISX15 Engine
This NOx sensor is built for Cummins ISX15 engines from 2013–2018. It replaces part numbers 3687930, 3687930RX, 2872944RX, 4326870. Made by Moregood Auto, it ensures reliable performance.
It helps control emissions and keeps your engine running clean. Easy to install and built to last.
| Pros | Cons |
|---|---|
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Perfect For:
This NOx sensor is perfect for truck owners with a Cummins 2013-2018 11.9L or 15L ISX15 engine. It’s easy to install and keeps your engine running smoothly.
Ready to Purchase?
10. Boatok NOx Sensor 68210084AA Nitrogen Oxide Sensors Inlet Upstream Compatible with Dodge Ram 2500 3500 4500 5500 2013-2018 L6 408 Diesel 6.7L Replacement for 5WK96742B 904-6011 904-6030 4326873
The Boatok NOx Sensor is a direct replacement for your Dodge Ram’s nitrogen oxide sensor. It fits 2013-2018 Ram 2500, 3500, 4500, and 5500 models with a 6.7L diesel engine.
High-quality materials ensure reliable performance, just like the original part. Easy installation and a 1-year warranty give you peace of mind.
| Pros | Cons |
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Perfect For:
This NOx sensor is perfect for Dodge Ram owners with 2013-2018 models. It’s ideal for those needing a reliable replacement for their 6.7L diesel engine.
Ready to Purchase?
Buying Guide
Engine inlet sensors are key to keeping your vehicle running smoothly. They monitor air and gas, ensuring top performance.
Choosing the right sensor can feel tricky. But don’t worry, we’ve got you covered. Here’s what to look for:
- Compatibility: Make sure the sensor fits your engine model and vehicle year. Check part numbers to avoid mistakes.
- Durability: Look for sensors made with quality materials that resist heat and vibration. They’ll last longer and perform better.
- Accuracy: A reliable sensor gives precise readings, helping your engine run efficiently and reduce emissions.
- Ease of Installation: Choose sensors with plug-and-play designs or factory-style connectors for quick and easy setup.
- Warranty: A good warranty (like 12 months or more) shows the manufacturer trusts their product’s quality.
- Performance: Sensors that improve fuel efficiency and reduce emissions are worth the investment.
With these tips, you’ll find the perfect sensor for your engine. Upgrade with confidence and keep your vehicle running like new!