NTK 23191 Oxygen Sensor

Direct Fit Oxygen Sensor for OE Replacement

NTK Part Number 23191 is a direct fit oxygen sensor built for specific Chrysler, Dodge, Jeep, Ram, and Mercedes-Benz applications. This heated, narrow-band sensor uses a 4-wire, threaded screw-in design to deliver closed-loop feedback to the ECU for air-fuel control and emissions monitoring.

As part of NTK’s Direct Fit Oxygen Sensor line, this replacement follows OE-style application technology and sensor construction for vehicles that rely on precise exhaust feedback. It is a specific-fit, standard replacement sensor with a rectangular female connector and a 7/8 in. hex for service access.

Key Features

• NTK Part Number 23191 direct fit oxygen sensor
• Heated narrow-band sensor with switching zirconia technology
• Specific fit replacement for selected Chrysler, Dodge, Jeep, Ram, and Mercedes-Benz models
• 4-wire design with 4 terminals and rectangular female connector
• Threaded screw-in mounting with M18 x 1.5 thread size
• Wiring harness length: 150 mm / 5.91 in.
• Overall length: 255 mm / 10.04 in.
• 7/8 in. (22 mm) wrench size for service removal and installation

Product Details

NTK is a major OEM oxygen sensor manufacturer, and this sensor reflects that OE-focused engineering approach. It provides constant feedback to the engine control unit so the vehicle can maintain the correct air-fuel ratio and monitor catalyst efficiency and fuel delivery performance. For drivers and technicians servicing a Chrysler Pacifica, Dodge Charger, Jeep Cherokee, or Ram 1500 Classic, NTK 23191 offers a direct replacement path for the original sensor location.

This part cross-references Bosch 15510 and DENSO Auto Parts 234-4417 for the same application. It also aligns with interchange references including 234-4983 and 5149170AA.

Common Problems This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio readings from a worn upstream or downstream sensor
• Reduced fuel economy caused by slow or inaccurate exhaust feedback
• Emissions test failures tied to sensor response issues
• Catalytic converter efficiency codes triggered by faulty O2 sensor data

Installation Notes and Tips

Verify the sensor position before ordering, since NTK 23191 is used in multiple locations including downstream right, downstream left, upstream left, upstream right, and downstream applications depending on vehicle. Confirm the M18 x 1.5 thread size, 4-wire connector layout, and 150 mm harness length against the original part before installation.

Fits 2021-2024 Chrysler Grand Caravan, downstream right; 2020-2024 Chrysler Pacifica, downstream right; 2020-2024 Chrysler Voyager, downstream right; 2020-2024 Dodge Durango, downstream left; 2022-2024 Ram 1500 Classic, downstream right; 2019-2024 Ram 2500, upstream left; 2020-2023 Chrysler 300, upstream right; 2020-2023 Dodge Challenger, upstream right; 2020-2023 Dodge Charger, upstream right; 2023 Jeep Cherokee, downstream; 2020-2022 Jeep Cherokee, upstream right; 2020-2022 Jeep Compass, downstream; 2022 Jeep Grand Cherokee WK, upstream right; 2021-2022 Ram ProMaster City, downstream; 2020-2021 Jeep Grand Cherokee, downstream left; 2021 Jeep Renegade, downstream; 2020-2021 Ram ProMaster 1500, upstream right; 2020-2021 Ram ProMaster 2500, upstream right; 2020-2021 Ram ProMaster 3500, upstream right; 2020 Dodge Grand Caravan, upstream right; 2016-2019 Mercedes-Benz GLE400, downstream left; 2017-2019 Mercedes-Benz GLE43 AMG, downstream left; 2017-2019 Mercedes-Benz GLS450, downstream left; 2019 Ram 3500, upstream left; 2015-2016 Mercedes-Benz GL450, downstream left; 2016 Mercedes-Benz GLE450 AMG, downstream left; 2015 Mercedes-Benz ML400, downstream left; 2011 Dodge Durango, upstream right; 2011 Jeep Grand Cherokee, upstream right; 2010-2011 Jeep Wrangler, upstream right.

Quality Assurance

NTK manufactures OEM oxygen sensors and uses in-house ceramic technology control from raw material through finished sensor production. That OE-oriented process supports consistent sensor construction for direct replacement service on the listed applications, including Chrysler, Dodge, Jeep, Ram, and Mercedes-Benz vehicles.