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Description
Q21-6127-001 Genuine Paccar DEF Concentration SensorPart details DESCRIPTION DEF Concentration Sensor CONDITION Used BRAND Paccar PART NUMBER Q21 6127 001 OTHER OEM PART NUMBERS THAT WILL WORK Q216127001, Q21 6170 001, Q216170001, Q21 6170 001K1T, Q216170001K1T, Q21 6170 001K1T, Q216167001, Q216167001K1T, Q21 6167 001K1T, Q21 6167 001, Q216127001K1T, Q21 6127 001K1T, Q21 6167 001K1T, Q216127001 Q21 6170 001K1T, Q216167001 Q216127001, Q216170001 Q216167001 Function of this part The aftertreatment system
Part details
| DESCRIPTION | DEF Concentration Sensor |
| CONDITION | Used |
| BRAND | Paccar |
| PART NUMBER | Q21-6127-001 |
| OTHER OEM PART NUMBERS THAT WILL WORK | Q216127001, Q21-6170-001, Q216170001, Q21-6170-001K1T, Q216170001K1T, Q21 6170 001K1T, Q216167001, Q216167001K1T, Q21 6167 001K1T, Q21-6167-001, Q216127001K1T, Q21 6127 001K1T, Q21-6167-001K1T, Q216127001 Q21-6170-001K1T, Q216167001 | Q216127001, Q216170001 | Q216167001 |
Function of this part
The aftertreatment system treats exhaust gases after they leave the engine using components such as the DOC, DPF, and SCR catalyst. It controls soot and NOx emissions by trapping particulates and converting harmful gases into less harmful compounds.
Why this part matters
These components are central to emissions compliance on modern diesel trucks. Problems in the aftertreatment system can cause frequent regens, power derates, and down-time until the fault is corrected.
About the brand
PACCAR components support both Kenworth and Peterbilt trucks with OEM-grade fit and performance.
Fitment & usage
Used OEM parts are a smart choice for controlling repair costs while still using original-equipment components. Always match the OEM part number(s) listed to your existing part, and consult your service manual, dealer, or technician if you are unsure about fitment.
Note: Because this is a used component, normal signs of wear such as scratches, discoloration, or light surface corrosion may be present. Refer to the product photos and information on Second Truck Parts for the best representation of the part you will receive.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy