NTK 23142 Oxygen Sensor - Downstream or Downstream Right

Direct Fit Oxygen Sensor for Jeep Applications

NTK Oxygen Sensor 23142 is a direct fit, heated oxygen sensor built for specific applications in the Jeep Liberty, Jeep TJ, and Jeep Wrangler. It uses a 4-wire design with a 13.5-inch wiring harness and an 18 mm threaded mounting style for OE-style replacement service.

As part of NTK’s Direct Fit Oxygen Sensor line, this sensor is built around application-specific coverage and OE-style fit, form, and function. NTK is a major original equipment oxygen sensor supplier, and this part reflects that focus on precise sensor control and manufacturing consistency.

Key Features

• Part number 23142 direct fit oxygen sensor
• Heated sensor design for faster operating response
• Specific fit application for select Jeep models
• 4-wire configuration with 13.5-inch wiring harness
• 18 mm threaded mounting type
• OE-style replacement for downstream oxygen sensor service

Detailed Description

NTK 23142 is an emission control oxygen sensor engineered for direct replacement in select Jeep vehicles. It is listed for 2001-2003 Jeep TJ and 2001-2003 Jeep Wrangler in the downstream B1S2 position, and for 2002-2003 Jeep Liberty in the downstream right B2S2 location. If you are searching for a downstream oxygen sensor for Jeep Liberty, TJ, or Wrangler, this part number 23142 provides application-specific coverage.

NTK’s Direct Fit Oxygen Sensor line is built to streamline coverage while maintaining OE-style performance characteristics. The sensor is manufactured with ceramic technology and tested during production to help ensure reliable operation that meets or exceeds OE specifications. This makes it a practical choice for replacing a worn or failing oxygen sensor on Jeep Liberty, Jeep TJ, or Jeep Wrangler emissions systems.

This part cross-references Bosch 13672 and DENSO Auto Parts 234-4029 for the same application.

What This Oxygen Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel feedback from a failing downstream sensor
• Emissions test failures tied to sensor response issues
• Rough idle or drivability concerns caused by inaccurate exhaust readings
• Replacement needs for a damaged or aged Jeep oxygen sensor

Installation Notes and Tips

Verify the vehicle’s year, model, and sensor position before installation. This sensor is specific fit and should be matched to the listed downstream locations: 2002-2003 Jeep Liberty, downstream right; 2001-2003 Jeep TJ, downstream; and 2001-2003 Jeep Wrangler, downstream. Confirm the connector, wire count, and threaded mounting style match the original sensor before replacement.

For best results, inspect the exhaust threads and wiring routing during service. The 13.5-inch harness length and 4-wire configuration should be checked against the original part to ensure proper routing and connection.

Quality Assurance

NTK is a long-standing OE oxygen sensor manufacturer with extensive manufacturing and testing controls. Part number 23142 is produced to support OE-level fit and reliability for select Jeep emissions applications.