Bayonet Paccar & Cummins| DEF Sensor | Q21-6170-003
Aftermarket DEF Sensor, brand new with no core required. Replaces OEM #Q21-6170-003 & more, built to OEM standards for accurate DEF readings. Includes manufacturer warranty for peace of mind.
DEF Sensor | Q21-6170-003
Get your truck or fleet back in service quickly with this aftermarket DEF sensor, built as a direct replacement for OEM part number Q21-6170-003. It delivers accurate DEF level and temperature data to keep your SCR system functioning properly and emissions-compliant.
This sensor is brand new, with no core required, and made to meet OEM specs—ideal for fleets, mechanics, and owner-operators needing fast, reliable performance. Its rugged design resists corrosion and performs in tough conditions, while its plug-and-play fit makes installation quick and easy.
Why wait for expensive dealer parts or delay maintenance? Order now and get fast shipping, guaranteed quality, and a sensor backed by a manufacturer warranty. Don’t let faulty sensors lead to performance issues, downtime, or failed inspections.
Whether you're replacing a failed sensor or stocking up for future maintenance, this Q21-6170-003 replacement delivers the quality and speed you need.
Buy today to restore SCR system accuracy, avoid DTC codes, and keep your vehicle moving with confidence—only from American Radiator.
DEF Sensor Features:
Designed For:
Manufacturer Warranty
DuraWRX provides a manufacturer's warranty on its DEF-related products for up to 2 years/40,000 miles/1,200 hours (whichever occurs first). This warranty covers any defects in materials or workmanship. To be eligible for a claim, the end user must register their product purchase on the DuraWRX site. To file a claim, customers must contact DuraWRX to receive a return shipping label. Once the product is returned and the claim is approved, DuraWRX will issue either a refund or a credit.
DEF Sensor Specs:
Please confirm your OEM or Aftermarket number matches before ordering.
Q21-6092
Q21-6095
Q21-6127-003
Q21-6127-006
Q21-6127-007
Q21-6167-004
Q21-6170-003
Q21-6170-003K1T
Q21-6170-004
Q216127006
Q216127006K1
Q216170003K1T
Shipping & Returns
Why Buy From American Radiator?
Trust American Radiator, your reliable source for quality cooling solutions since 2001. With roots in the industry dating back to the 1970s, our team brings decades of experience delivering high-performance radiators, charge air coolers, and DPF systems at competitive prices.
We work directly with trusted domestic and international manufacturers that supply OEM-grade components, ensuring every product meets or exceeds original equipment standards. Whether you need a heavy-duty truck radiator or a replacement for your DEF Header, we’re committed to providing durable, cost-effective solutions that perform.
Have questions? Contact our experienced inside sales team at 888-483-5763 for expert guidance and fast, friendly support.
| Part Number | SKU | 287006 |
|---|---|
| OEM | Aftermarket Numbers | Q21-6092 Q21-6095 Q21-6127-003 Q21-6127-006 Q21-6127-007 Q21-6167-004 Q21-6170-003 Q21-6170-003K1T Q21-6170-004 Q216127006 Q216127006K1 Q216170003K1T ASP62DS21-FG ASP62DS21FG |