NTK 23138 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

NTK Direct Fit Oxygen Sensor 23138

NTK 23138 is a direct fit heated oxygen sensor built for specific import and domestic applications. It is engineered for accurate exhaust feedback, OE-style fitment, and reliable signal performance on select Jeep and Dodge vehicles.

Key Features

• Heated oxygen sensor with a specific-fit design
• 4-wire configuration with an 11.75 in. wiring harness
• 18 mm threaded mounting for direct replacement use
• OE-style fit, form, and function for emission control service
• Manufactured by NTK, a major original equipment oxygen sensor supplier
• Cross-references Bosch 13664 and DENSO Auto Parts 234-4030 for the same application

Product Details

NTK Direct Fit Oxygen Sensor 23138 is part of the NTK sensor line, which focuses on application-specific replacement sensors for import and domestic vehicles. NTK uses ceramic-based manufacturing expertise and extensive production testing to help deliver consistent sensor output and dependable installation fit. This oxygen sensor is a direct replacement for select 2001-2004 Jeep TJ and Wrangler upstream positions, along with multiple 2001-2003 Dodge Dakota, Durango, Ram 1500, Ram 2500, Ram 3500, and related van applications. It is also listed for upstream positions on Jeep Grand Cherokee and Liberty models. For buyers searching for an upstream oxygen sensor for Jeep Wrangler, a direct fit oxygen sensor for Dodge Ram 1500, or an NTK 23138 replacement for Jeep TJ, this part matches the confirmed vehicle coverage shown below.

What It Helps Address

• Check engine light concerns related to oxygen sensor performance
• Incorrect air-fuel feedback from a worn upstream sensor
• Rough idle or drivability issues tied to exhaust mixture control
• Emission test failures caused by a failing oxygen sensor
• Replacement needs for a damaged or aging factory-style sensor

Installation Notes and Fitment

Fits 2001-2004 Jeep TJ, upstream. Fits 2001-2004 Jeep Wrangler, upstream. Fits 2001-2003 Dodge Ram 1500, upstream right and upstream left. Fits 2002-2003 Dodge Durango, upstream. Fits 2002-2003 Jeep Liberty, upstream right and upstream. Fits 2001-2003 Jeep Grand Cherokee, upstream. Fits 2001-2003 Dodge Dakota, upstream right and upstream left. Fits 2001-2003 Dodge Ram 1500 Van, upstream. Fits 2001-2003 Dodge Ram 2500 Van, upstream. Fits 2001-2003 Dodge Ram 3500 Van, upstream. Fits 2001-2002 Dodge Ram 1500, upstream. Fits 2001-2002 Dodge Ram 2500, upstream. Fits 2001-2002 Dodge Ram 3500, upstream. Fits 2001-2002 Dodge Ram 1500 Van, upstream. Fits 2001-2002 Dodge Ram 2500 Van, upstream. Fits 2001-2002 Dodge Ram 3500 Van, upstream. Fits 2001 Dodge Ram 1500, upstream. Fits 2001 Dodge Ram 2500, upstream. Fits 2001 Dodge Ram 3500, upstream.

Verify the connector style, harness length, and sensor location before installation. This part uses a threaded mounting type and is listed for upstream positions only. Confirm Federal Emissions notes where shown in the fitment data.

Quality Assurance

NTK is the sensor specialist within the NGK family of products and is recognized as a major original equipment oxygen sensor manufacturer. Each sensor is manufactured and tested to meet or exceed OE specifications for fit and reliability.