NTK 23137 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Direct Fit Oxygen Sensor for OE Applications

NTK Direct Fit Oxygen Sensor 23137 is a heated, threaded oxygen sensor built for specific-fit replacement in select Dodge and Jeep applications. With an 18-inch wiring harness, 4-wire design, and 18 mm thread diameter, it is configured for direct replacement where the original sensor location and connector match the vehicle application.

NTK is known for oxygen sensor manufacturing and OE application coverage, with ceramic control and manufacturing testing used to support fit, form, and function. This part number 23137 is listed for upstream positions on Dodge Ram, Viper, Dakota, Durango, Ram 2500, Ram 3500, and select Jeep Grand Cherokee, TJ, and Wrangler models.

Key Features

• Heated oxygen sensor for specific-fit replacement
• 4-wire design with 18-inch wiring harness
• 18 mm threaded mounting type
• Direct Fit Oxygen Sensor line for OE-style installation
• Built for upstream sensor locations on select Dodge and Jeep vehicles
• NTK part number 23137

Product Details

NTK Direct Fit Oxygen Sensor 23137 is engineered for vehicles that require a direct replacement sensor with the correct connector, harness length, and threaded mounting style. As part of the NTK Direct Fit Oxygen Sensor line, it is aimed at restoring accurate exhaust oxygen monitoring in applications such as 2001-2006 Dodge Dakota, 2001-2006 Dodge Durango, 2003-2006 Dodge Viper, 2004-2006 Dodge Ram 1500, 2003 Dodge Ram 2500, 2003 Dodge Ram 3500, and 2004 Jeep Grand Cherokee, TJ, and Wrangler.

This part cross-references Bosch 15511 and DENSO Auto Parts 234-4588 for the same application.

What It Helps Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel mixture readings from a worn upstream sensor
• Slow sensor response during closed-loop fuel control
• Emissions test failures tied to sensor degradation
• Rough idle or drivability issues caused by inaccurate exhaust feedback

Installation Notes and Fitment

Compatible With 2004-2006 Dodge Ram 1500, upstream right, Bank 2 sensor 1. Compatible With 2003-2006 Dodge Viper, upstream right, Bank 2 sensor 1, and 2003-2006 Dodge Viper, upstream left, Bank 1 sensor 1. Compatible With 2004 Jeep Grand Cherokee, upstream, Cylinders 1-3, Bank 1 Sensor 1; 2004 Jeep TJ, upstream, Cylinders 1-3, Bank 1 Sensor 1; and 2004 Jeep Wrangler, upstream, Cylinders 1-3, Bank 1 Sensor 1.

Compatible With 2002-2003 Dodge Dakota, upstream left, including California emissions applications; 2001-2003 Dodge Durango, upstream left, California emissions; 2003 Dodge Ram 2500, upstream left, Bank 1 Sensor 1; 2003 Dodge Ram 3500, upstream left, Bank 1 Sensor 1; and 2001-2003 Dodge Dakota, upstream left or upstream for California and Federal emissions listings. Verify connector match, sensor position, and emissions calibration before installation.

Quality Assurance

NTK manufactures oxygen sensors with OE-focused engineering and extensive production testing to support quality and reliability that meet or exceed original equipment specifications. The brand’s OE application experience and ceramic manufacturing background support consistent performance across import and domestic coverage.