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5WK9 7206A is the 24 volt exhaust NOx sensor with its control module on an alloy mounting plate, a probe with threaded boss and a grey lead. It is used on Isuzu engines (Case CX210D). This aftermarket version has the same mounting and electrical connector as the original, so it plugs in and bolts on where the old one came off.
The same part is also sold as Isuzu 8983023940 and Isuzu 5WK98983023940.
Sold as one unit. Check the number on your old part, or in the parts manual for your machine, before ordering.
| Part Type | NOx Sensor 24V |
| Replaces | Isuzu 8983023940 |
| Voltage | 24 V |
| Machine | Case CX210D |
| Cross references | 5WK9 7206A, Isuzu 5WK97206A |
| Fits | Isuzu diesel engines, including the Case CX210D excavator |
| Condition | New, aftermarket |
| Stat. HS-Code | 903289 |
| Country of Manufacture | China |
Isuzu machines
Check the part number on your old unit before ordering.
| Isuzu Part No.(SPM Part No.) | Fits |
|---|---|
| 8983023940(SPM-HEP-4709) | Isuzu diesel engines, including the Case CX210D excavator |
| 5WK97206A(SPM-HEP-4709) | Isuzu diesel engines, including the Case CX210D excavator |
| Brand | Part No. |
|---|---|
| Isuzu | 8983023940 |
| 5WK9 | 7206A (this page, SPM-HEP-4709) |
All of these numbers are the same part.
Wrong or missing reading
A failed sensor gives a dead or false gauge reading or a warning light.
Fault codes
Check the wiring and plug first; if the sensor itself reads out of range, replace it.
Corrosion
Connectors on machines take water and dirt. A corroded sensor is cheaper to replace than to chase.
Fleet spares
Common sensors are worth keeping in stock for each machine type.
We check what other aftermarket sellers charge for this same part. Their prices on the date we checked:
| Seller | Price | Checked |
|---|---|---|
| FridayParts | USD 115.49 | 31 Oct 2026 |
| SINOCMP | USD 149.00 | 31 Oct 2026 |
| WDPart | USD 245.00 | 31 Oct 2026 |
| Spare Part Mart | USD 69.93 | Today |
Our price of USD 69.93 is 39% to 71% less than these sellers.
Found this part cheaper somewhere else? Send us the listing and we will beat it by 5% under our Price Beat Guarantee. Every order is also covered by our 30 day money back guarantee.
Yes, it is a direct replacement for the 5WK9 7206A with the same fitting.
There is no fixed interval. It is changed when it fails, and many fail from water in the plug or chafed wiring rather than wear.
A fault code for this circuit, readings that jump or stay fixed, or a part that does not respond with power at the plug.
Read the fault codes, then check the plug and wiring for corrosion or a broken wire. A wiring fault reads the same as a failed sensor.
Usually. Clear them after fitting and run the machine, so old codes are not mistaken for a new fault.
No. It is an aftermarket sensor made to replace the 5WK9 7206A. It is not made by the original manufacturer; the number only shows what it replaces.
Live rates for the quantity selected, delivered to your door. Confirmed at checkout.
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