NTK 23178 Oxygen Sensor

Direct-fit oxygen sensor for OE-style replacement

NTK 23178 is a specific-fit oxygen sensor built for vehicles that need accurate closed-loop feedback and reliable emissions monitoring. It uses a heated narrow-band switching zirconia design with a 4-wire layout and a circular female connector for direct replacement service.

• Specific-fit oxygen sensor for direct replacement service
• Heated narrow-band switching zirconia technology
• 4-wire design with circular female connector
• Metric M18 x 1.5 thread with 7/8 in. hex and wrench size
• NTK 23178 supports engine control and OBDII monitoring

How this oxygen sensor works

NTK 23178 helps the ECU monitor air-fuel ratio by sending constant feedback from the exhaust stream. That input supports fuel control, catalytic converter efficiency checks, and emissions system diagnostics. This part is a direct-fit oxygen sensor from NTK, the OEM oxygen sensor supplier and manufacturer behind the Sensor Specialist line.

Used to address common issues

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback to the engine computer
• Reduced fuel economy caused by inaccurate exhaust readings
• OBDII faults tied to fuel delivery or catalyst efficiency monitoring
• Emissions test failures linked to sensor response problems

Installation notes and fitment

Fits 1996 Jeep Cherokee, upstream. Fits 1996-1998 Jeep Grand Cherokee, upstream. Fits 1997-1999 Mitsubishi Eclipse, upstream. Fits 1997-1998 Eagle Talon, upstream. Fits 1998-2000 Chrysler Sebring, upstream right. Fits 1998-2000 Dodge Avenger, upstream right. Fits 2000 Chrysler Neon, downstream. Fits 2001-2003 Chrysler Town & Country, downstream. Fits 2001-2003 Chrysler Voyager, downstream. Fits 2001-2003 Dodge Caravan, downstream. Fits 2001-2003 Dodge Grand Caravan, downstream.

Confirm the connector style, thread size, and sensor position before installation. This part cross-references Bosch (e.g., 13315, 13399) for the same application.

Quality assurance

NTK is a major OEM oxygen sensor supplier with in-house ceramic technology used from raw material through finished sensor production. That manufacturing control supports consistent sensor output and OE application coverage.