Denso 234-4008 Oxygen Sensor - Downstream or Downstream Front

Denso OE Style Oxygen Sensor 234-4008

Denso 234-4008 is an OE Style heated oxygen sensor built for direct replacement on select Chrysler, Dodge, Jeep, and Plymouth applications. It is engineered for a specific fit, threaded mounting, and reliable signal control in downstream and downstream front positions.

Key Features

• Heated oxygen sensor for faster operating response
• Specific-fit design for direct replacement service
• 4-wire configuration with female connector
• Threaded mounting with 0.708 in. thread diameter
• 11.02 in. wiring harness length for application-specific routing
• OE Style construction for factory-like fit and function

OE Style Construction

Denso’s OE Style line is built and tested to strict original-equipment standards, with precision dimensions for first-time fitment. The sensor uses an aluminum oxide trap layer to help protect the ceramic element from silicone and lead contamination, supporting stable engine management, fuel control, and long service life. This part cross-references Bosch (e.g., 13316, 15465) for the same application.

Vehicle Fitment

• Fits 2001-2002 Chrysler Neon, downstream.
• Fits 2001-2002 Chrysler PT Cruiser, downstream.
• Fits 2001-2002 Dodge Neon, downstream.
• Fits 2001 Jeep Cherokee, downstream front.
• Fits 2001 Plymouth Neon, downstream.
• Fits 2000 Jeep Cherokee, downstream front.
• Fits 2000 Jeep TJ, downstream front.
• Fits 2000 Jeep Wrangler, downstream front.

Common Issues This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Incorrect air-fuel ratio feedback from a worn sensor
• Reduced fuel economy caused by slow sensor response
• Rough idle or drivability concerns tied to exhaust feedback
• Failed emissions testing due to sensor degradation

Installation Notes

Confirm the downstream or downstream front position before ordering, since fitment varies by vehicle and location. Match the connector style, wire count, and thread size to the original sensor, and inspect the harness routing for heat damage before installation. For 2001-2002 Chrysler Neon, 2001-2002 Dodge Neon, and 2000-2001 Jeep applications, verify the exact application notes, including California-specific listings where shown.

Quality Assurance

Denso manufactures and tests this oxygen sensor to OE standards for accurate replacement fitment and dependable operation. The OE Style design is intended to deliver the right part and the right fit for the listed Chrysler, Dodge, Jeep, and Plymouth applications.