What This Sensor Is and Where It Lives
This is a NOx sensor for the SCR system on the Cummins ISB 6.7L. Depending on your truck's build it's mounted either upstream (before the SCR catalyst) or downstream (after it), and the two positions use the same part number on these trucks — Cummins ran a common sensor front and back for this engine/year combo.
If you're chasing a fault code like SPN 3226 or 3216, check which position triggered it before you order, but the physical sensor and connector are the same part either way.
These sensors read nitrogen oxide levels and feed that data to the ECM so it can manage DEF dosing. When one goes bad you'll usually see derates, a check engine light, or DEF-related fault codes stacking up on the dash.
How the Cross Numbers Line Up
2894945 is the Cummins service number, and 5WK96692A is the Bosch OEM number stamped right on the sensor housing — that's the one to look for if the label's still legible. 2894945NX, 5293295NX, 5893295, and 6407242R are all revisions and supersessions Cummins has cycled through over the years for this same sensor location.
The 'NX' suffix numbers are typically later production runs or minor firmware/calibration updates, but the physical sensor, connector, and thread size haven't changed on these — that's why they cross straight across. Where you need to pay attention is the connector pigtail and mounting boss; confirm your old sensor's number and connector style match before ordering, especially if your truck's had any prior emissions system work done.
When in doubt, pull the number off the sensor itself or run your VIN. Cummins has updated software calibrations tied to these sensors over the years, and while the hardware crosses fine, we'd rather you confirm than guess and end up shipping it back.
Ordering From PartStop
We keep 5WK96692A in stock here in Tacoma, so if you're local you can grab it same-day and get the truck back on the road instead of waiting on a core exchange from the dealer. If you're not local, it ships nationwide and usually goes out same day if you order before early afternoon.
Every sensor we sell carries our 6+ month warranty. If it doesn't read right or throws a code out of the box, call us — we'll sort it out. Just don't toss the old sensor until the new one's confirmed working; some fleets want the old part back for core credit depending on how your account's set up.
5WK96692A Cross-Reference & Interchange Numbers
These manufacturer and aftermarket numbers commonly cross-reference to 5WK96692A. 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 |
|---|---|
| Cummins | 2894945NX, 5293295NX, 5893295, 6407242R |
Frequently asked questions
Does 5WK96692A fit my 2012 Freightliner M2 106?
If it's got the Cummins ISB 6.7L, most likely yes, but confirm with your VIN or by pulling the number off your current sensor. Some early 2010 builds used a slightly different calibration, so match the number first.
Is this the same as the Cummins 2894945NX sensor?
Same sensor physically — 2894945NX is a later Cummins revision of the same part. They cross-reference and will bolt in and plug in the same, but if your engine ECM software is older, confirm with your parts number before ordering just to be safe.
My sensor is mounted downstream, will this work there too?
Yes, Cummins used the same sensor number for both the upstream and downstream positions on this engine and year range. Just make sure you're ordering the right quantity if both are bad.
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.