Denso 234-4943 Oxygen Sensor - Downstream Right, Upstream or Upstream Left

Denso OE Style Oxygen Sensor 234-4943

Denso 234-4943 is an OE Style heated oxygen sensor built for direct replacement on select Jeep, Dodge, and Chrysler applications. It is engineered for specific fitment, accurate signal response, and a first-time fit on vehicles such as the Jeep Wrangler, Dodge Neon, and Chrysler PT Cruiser.

Key Features

• Heated oxygen sensor with specific fitment
• OE Style replacement for direct installation
• 4-wire design with female connector
• Threaded mounting type with 0.708 in. thread diameter
• 15.75 in. wiring harness length
• Built and tested to OE standards for consistent sensor performance
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Product Details

This Denso oxygen sensor is designed to replace the original sensor on 2010-2011 Jeep Wrangler upstream left and downstream right positions, 2004 Dodge Neon upstream with 15-inch upstream sensor routing, 2003 Chrysler PT Cruiser upstream, and 2003 Dodge Neon upstream. The Denso 234-4943 uses a heated, threaded design with a female connector and a 4-wire configuration to match the original equipment layout. As part of Denso’s OE Style line, it focuses on exact replacement dimensions and sensor construction for proper fit and dependable operation.

This part cross-references Bosch 13672 for the same application.

What It Helps Address

• Check engine light caused by a failing oxygen sensor
• Incorrect air-fuel ratio readings
• Reduced fuel economy from slow or inaccurate sensor response
• Rough idle or drivability issues related to exhaust feedback
• Emissions test failures tied to sensor performance

Installation Notes

• Verify the vehicle position before ordering: upstream left, downstream right, or upstream depending on application.
• Confirm connector style, wire count, and harness length against the original sensor.
• Threaded mounting requires proper removal and installation procedures to avoid exhaust thread damage.
• Use the vehicle’s exact year, make, model, and sensor position for fitment confirmation.

Quality Assurance

Denso manufactures and tests this sensor to OE standards and uses contamination-resistant ceramic protection to support long-term sensor accuracy. The OE Style line is built for direct replacement and correct fit on the listed applications.