NTK 23194 Oxygen Sensor

Direct Fit Oxygen Sensor for Mercedes-Benz and Dodge

NTK Part Number 23194 is a direct fit oxygen sensor built for specific downstream and upstream applications across Mercedes-Benz, Dodge, Chrysler, and Jeep vehicles. It uses a heated, narrow-band switching zirconia design with a 4-wire, pin-terminal configuration for OE-style signal response and straightforward replacement.

Key Features

• Direct fit, specific application oxygen sensor
• Heated narrow-band sensor with switching zirconia technology
• 4-wire design with rectangular female connector
• Threaded screw-in mounting with M18 x 1.5 thread size
• 7/8 in. hex size for service access
• Wiring harness length: 7.87 in. (200 mm)
• Overall length: 11.85 in. (301 mm)

Product Details

NTK 23194 is part of the Direct Fit Oxygen Sensor line, built for OE application coverage and exact-fit replacement needs. NTK is a major OEM oxygen sensor supplier, and this sensor reflects that focus with a factory-style connector, pin terminals, and a standard replacement grade. It is engineered to provide closed-loop feedback to the ECU so the engine can maintain the correct air-fuel ratio and the OBDII system can monitor fuel delivery and catalytic converter efficiency. This part cross-references Bosch 13664 and DENSO Auto Parts 234-4274 for the same application.

Common Uses

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback
• Reduced fuel economy from a failing upstream or downstream sensor
• OBDII fault codes tied to catalyst efficiency monitoring
• Driveability issues caused by slow or inaccurate sensor response

Installation Notes

Verify the sensor position before ordering, since this part is listed for upstream and downstream locations depending on the vehicle. Confirm the connector shape, wire count, thread size, and overall length against the original sensor before installation. Fits 2018-2020 Mercedes-Benz S450, downstream right; Fits 2019-2020 Mercedes-Benz S560e, downstream left; Fits 2016-2019 Mercedes-Benz GLE63 AMG, downstream right; Fits 2017-2019 Mercedes-Benz GLS550, downstream right; Fits 2013-2019 Mercedes-Benz SL63 AMG, downstream right; Fits 2007 Dodge Charger, upstream right; Fits 2004 Jeep Wrangler, upstream; Fits 2001-2004 Dodge Ram 2500, upstream right.

Quality Assurance

NTK manufactures oxygen sensors with in-house ceramic technology control from raw material through finished product, supporting consistent OE-style performance and application accuracy.