What This Sensor Does and Where It Goes
This is the inlet NOx sensor, meaning it sits upstream in the SCR system reading exhaust gas before it hits the dosing and catalyst. It's a 12-volt, 4-pin unit — Detroit uses this configuration across the DD13, DD15, and DD16 platforms found in Freightliner trucks from about 2004 up through current builds.
The inlet and outlet sensors on these engines are NOT interchangeable with each other even though they can look similar sitting on the shelf — different calibration, different job. Make sure the old part you're pulling off is actually the inlet sensor before you order this one.
Freightliner ran these across a lot of chassis and years, so 'fits your truck' really comes down to what engine's under the hood and what number is stamped on the sensor you're replacing, not the model year on the door sticker.
Reading the Cross-Reference
A0101531928 shows up under a few different labels because Detroit Diesel and Continental (the actual sensor manufacturer in a lot of these applications) both stamp numbers on the same physical part, and the aftermarket adds its own part numbers on top of that. RA0101531928 and EA0101531928 are Detroit's remanufactured and exchange designations for the same sensor — same fit, different program the part came out of.
Continental's 5WK97341 is the manufacturer-level number since Continental builds these sensors for Detroit. The 285-1009 and 3FL008 numbers are aftermarket cross-reference codes used by parts distributors — same physical sensor, packaged under a different label.
Since this is a plug-and-play electronic sensor rather than something with drum sizes or spline counts to worry about, the main thing that changes fitment is the connector pin-out and voltage — always 12V/4-pin here — plus whether you're ordering inlet vs outlet. Match the number stamped on your old sensor or pull it by VIN before you buy.
Ordering From PartStop
We're in Tacoma and keep these in stock for same-day pickup or will/call if you're local. If you're not near us, we ship nationwide and most orders go out the same day they're placed.
Every sensor we sell carries a 6+ month warranty. If it doesn't read right or throws the same fault code as your old one, call us before you throw parts at it — sometimes it's wiring or a connector issue, not the sensor itself.
Bring us the number off your old sensor or your VIN and we'll confirm before you pay for shipping on something that doesn't fit.
A0101531928 Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to A0101531928. Use them to identify the part — then confirm the exact fit by VIN or the number stamped on your old unit before you order. An interchange is a starting point, not a fitment guarantee.
| Brand / Line | Cross-Reference Numbers |
|---|---|
| Cross-Reference | 285-1009, 3FL008, A0101530002 |
| Detroit Diesel (OEM) | DDE A0101531928, EA0101531928 |
| Continental | 5WK97341 |
| Detroit Diesel | RA0101531928, 0101531928 |
Frequently asked questions
Does A0101531928 fit my 2015 Freightliner Cascadia with a DD15?
Likely yes, but confirm by pulling the number off your existing inlet NOx sensor or running your VIN. Detroit used this same inlet sensor across DD13/DD15/DD16 builds for a long stretch of years, but the only way to know for certain is matching against what's currently on the truck.
Is this the same sensor as the Continental 5WK97341?
Yes — Continental manufactures this sensor for Detroit Diesel, so 5WK97341 is the manufacturer number for the same physical part as A0101531928. Different label, same sensor.
What's the difference between A0101531928 and RA0101531928?
The 'R' prefix denotes Detroit's remanufactured/exchange designation. Physically and functionally it's the same sensor — the R-number just tracks which program the part shipped under. Either will do the job as a direct replacement.
Not sure it fits? We check before you pay.
Run your VIN and we’ll match parts to your exact truck, or call the counter — a person who knows trucks verifies fitment by OEM number before the order ships. No wrong-box returns.
More cross-reference guides
Need the part, not just the reading?
Every part below is a Premium Quality aftermarket Direct Replacement with published OEM cross-reference numbers, a 6+ month warranty and same-business-day shipping from Tacoma, WA. Not sure it fits? Run your VIN — or call and a person who knows trucks will verify fitment before you pay.