Product Description
MOPAR 68447681AA UPSTREAM NITROGEN OXIDE (NOX) SENSOR FOR 19-24 RAM WITH 6.7L CUMMINS ENGINE
Maintain optimal emissions performance and factory engine efficiency with the genuine Mopar 68447681AA Upstream Nitrogen Oxide (NOx) Sensor for 2019-2024 Ram trucks equipped with the 6.7L Cummins turbo diesel engine. This OEM engine-out NOx sensor is engineered to accurately monitor nitrogen oxide levels within the exhaust stream, providing critical emissions data to the ECM for proper SCR, DEF, and aftertreatment system operation.
The Mopar 68447681AA upstream NOx sensor is specifically designed for harsh diesel exhaust environments and delivers precise real-time emissions readings required for proper fuel management, DEF injection control, turbocharger efficiency, and emissions compliance. A failing NOx sensor can trigger check engine lights, DEF system warnings, reduced fuel economy, derate conditions, failed emissions tests, and poor overall engine performance.
Manufactured to strict OEM Mopar standards, this direct-fit sensor integrates seamlessly with the factory emissions harness and onboard diagnostics system. Unlike lower-quality aftermarket alternatives, genuine Mopar sensors provide accurate calibration, superior durability, and dependable long-term operation under extreme exhaust temperatures and towing conditions.
This upstream “engine-out” NOx sensor is commonly located near the turbocharger outlet pipe and is an essential component of the Cummins emissions control system found on late-model Ram diesel trucks.
FAQ
What does the upstream NOx sensor do?
The upstream NOx sensor measures nitrogen oxide levels exiting the engine and sends data to the ECM to manage DEF injection and emissions system performance.
What are symptoms of a failing NOx sensor?
Common symptoms include check engine lights, DEF warnings, reduced engine performance, poor fuel economy, emissions faults, and possible limp mode conditions.
Is this a genuine Mopar OEM sensor?
Yes. The 68447681AA is a genuine OEM Mopar NOx sensor designed specifically for Ram 6.7L Cummins diesel applications.
Is this the upstream or downstream sensor?
This is the upstream (engine-out) NOx sensor positioned before the SCR/DEF system.
Does this sensor require programming?
Most installations do not require additional programming, but fault codes should be cleared after installation using a compatible scan tool.
Vehicle Fitment
- 2019 Ram 2500 6.7L Cummins Diesel
- 2020 Ram 2500 6.7L Cummins Diesel
- 2021 Ram 2500 6.7L Cummins Diesel
- 2022 Ram 2500 6.7L Cummins Diesel
- 2023 Ram 2500 6.7L Cummins Diesel
- 2024 Ram 2500 6.7L Cummins Diesel
- 2019 Ram 3500 6.7L Cummins Diesel
- 2020 Ram 3500 6.7L Cummins Diesel
- 2021 Ram 3500 6.7L Cummins Diesel
- 2022 Ram 3500 6.7L Cummins Diesel
- 2023 Ram 3500 6.7L Cummins Diesel
- 2024 Ram 3500 6.7L Cummins Diesel
- 2019 Ram 4500 6.7L Cummins Diesel
- 2020 Ram 4500 6.7L Cummins Diesel
- 2021 Ram 4500 6.7L Cummins Diesel
- 2022 Ram 4500 6.7L Cummins Diesel
- 2023 Ram 4500 6.7L Cummins Diesel
- 2024 Ram 4500 6.7L Cummins Diesel
- 2019 Ram 5500 6.7L Cummins Diesel
- 2020 Ram 5500 6.7L Cummins Diesel
- 2021 Ram 5500 6.7L Cummins Diesel
- 2022 Ram 5500 6.7L Cummins Diesel
- 2023 Ram 5500 6.7L Cummins Diesel
- 2024 Ram 5500 6.7L Cummins Diesel
Fits Select Trims Including:
Tradesman, Big Horn, Lone Star, SLT, Laramie, Laramie Longhorn, Limited, Rebel, Power Wagon, Chassis Cab Models
Specifications for Mopar 68447681AA
| Category | Details |
|---|---|
| Part Number | 68447681AA |
| Brand | Mopar (OEM) |
| Product Type | Upstream Nitrogen Oxide (NOx) Sensor |
| Sensor Position | Engine-Out / Upstream / Turbocharger Outlet Pipe |
| Engine Compatibility | 6.7L I6 Cummins Turbo Diesel |
| Vehicle Fitment | 2019-2024 Ram 2500/3500/4500/5500 |
| Function | Monitors nitrogen oxide emissions exiting the engine for DEF and SCR system management |
| Installation Type | Direct OEM Replacement |
| Connector Type | OEM Factory Emissions Connector |
| Sensor Construction | High-Temperature OEM Emissions Sensor Assembly |
| Emissions Compatibility | SCR / DEF Equipped Diesel Emissions Systems |
| Transmission Compatibility | 68RFE Automatic & Aisin AS69RC Equipped Trucks |
| UPC | Not Available |
| GTIN | Not Available |
| Shipping Weight | Approx. 2 lbs |
| Shipping Dimensions | Approx. 7" x 5" x 4" |
| Shipping | Standard ground shipping available |
| Operating Benefits | Restores emissions compliance, improves DEF system operation, supports proper regeneration cycles, enhances fuel efficiency, reduces fault codes |
| Common Diagnostic Trouble Codes | P2201, P2202, P2203, P229F |
| Prop 65 | WARNING: Cancer and reproductive harm – www.P65Warnings.ca.gov |
| Condition | New |
