Denso 234-4593 Oxygen Sensor - Upstream, Upstream Left or Upstream Rear

Denso OE Style Oxygen Sensor 234-4593

Denso 234-4593 is an OE-style heated oxygen sensor built for direct replacement on select Chrysler, Dodge, Jeep, and Mitsubishi applications. It is engineered for exact fitment and stable signal performance, with vehicle-specific compatibility for upstream locations on models such as the Dodge Ram 1500, Jeep Grand Cherokee, and Chrysler 300.

Key Features

• OE Style replacement oxygen sensor for emission control systems
• Heated sensor design for faster operating temperature and signal response
• Specific-fit design with a threaded mounting type
• 4-wire configuration with female connector
• 12.80 in. wiring harness length for application-specific routing
• 0.708 in. thread diameter for direct installation on listed vehicles
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Detailed Description

This Denso oxygen sensor is manufactured and tested to OE standards for direct replacement performance. The OE Style line is built for first-time fitment, making it a practical choice when replacing a worn upstream oxygen sensor on vehicles such as the 2005-2006 Dodge Ram 2500, 2005-2006 Jeep Liberty, or 2006 Dodge Charger. Denso 234-4593 is also cross-referenced with Bosch 13869 for the same application. By maintaining accurate exhaust feedback, the sensor supports proper fuel control and emissions system operation across the listed Chrysler, Dodge, Jeep, and Mitsubishi fitments.

What This Oxygen Sensor Helps Address

• Check engine light related to oxygen sensor performance
• Rough idle or inconsistent air-fuel feedback from a failing upstream sensor
• Reduced fuel economy caused by inaccurate exhaust readings
• Emissions test failure tied to sensor response issues
• Slow sensor switching or contamination-related signal degradation

Installation Notes and Tips

Verify the sensor position before ordering, since this part is listed for upstream, upstream left, and upstream rear locations depending on the vehicle. Confirm connector style, wire count, and thread diameter against the original sensor before installation. This part fits 2005-2006 Chrysler 300, upstream; fits 2006 Dodge Charger, upstream; and fits 2005-2006 Jeep Grand Cherokee, upstream. Additional listed applications include 2005-2006 Dodge Ram 1500, upstream, and 2006 Mitsubishi Raider, upstream left. Use proper oxygen sensor service procedures to avoid damaging the sensing element or wiring harness.

Quality Assurance

Denso manufactures this sensor to strict OE standards and tests each component for replacement accuracy and fit. The design includes an aluminum oxide trap layer to help protect the ceramic element from silicone and lead poisoning, supporting long-term sensor durability and consistent engine management performance.