Denso 234-4005 Oxygen Sensor - Upstream

Denso OE Style Oxygen Sensor 234-4005

Denso 234-4005 is an OE Style heated oxygen sensor built for specific-fit replacement on select Chrysler, Dodge, and Plymouth applications. It is engineered for accurate exhaust feedback, stable engine management, and a first-time fit on vehicles such as the 1997 Dodge Caravan upstream oxygen sensor application and the 2000 Chrysler Voyager upstream oxygen sensor application.

Key Features

• Heated oxygen sensor with specific-fit design
• 4-wire configuration with female connector
• Threaded mounting type for direct replacement
• Wiring harness length: 17.32
• Thread diameter: 0.708
• OE Style construction for factory-style fit and function
• Built to strict OE standards and tested for replacement accuracy
• Aluminum oxide trap layer helps protect the ceramic element from silicone and lead contamination

Product Details

This Denso oxygen sensor is part of the OE Style line, which focuses on direct-replacement coverage and factory-style fitment. The sensor is precision built to match the original application, helping maintain proper air-fuel feedback for the engine control system. Denso 234-4005 is a direct replacement for upstream sensor locations on select Chrysler Voyager, Dodge Caravan, Plymouth Voyager, Chrysler Cirrus, Chrysler Sebring, Dodge Grand Caravan, and Dodge Stratus models.

This part cross-references Bosch 13100 and NTK 23041 for the same application.

Vehicle Fitment

• Fits 2000 Chrysler Voyager, Upstream
• Fits 1999-2000 Dodge Caravan, Upstream
• Fits 1997 Dodge Caravan, Upstream
• Fits 1999-2000 Plymouth Voyager, Upstream
• Fits 1997 Plymouth Voyager, Upstream
• Fits 1997 Chrysler Cirrus, Upstream
• Fits 1996-1997 Chrysler Sebring, Upstream
• Fits 1997 Dodge Grand Caravan, Upstream
• Fits 1997 Dodge Stratus, Upstream
• Fits 1997 Plymouth Grand Voyager, Upstream

Common Issues This Sensor Can Address

• Fault codes related to upstream oxygen sensor performance
• Unstable fuel mixture readings from a worn sensor
• Reduced fuel economy caused by inaccurate exhaust feedback
• Rough engine operation tied to delayed sensor response
• Emissions test failures linked to sensor degradation

Installation Notes

Confirm the connector style, wire count, thread diameter, and upstream location before installation. This is a specific-fit sensor, so matching the original application is important for proper installation on Chrysler Voyager, Dodge Caravan, and related models. Inspect the harness routing and connector condition during replacement to ensure a secure electrical connection.

Quality Assurance

Denso manufactures and tests this OE Style oxygen sensor to strict original-equipment standards. The design includes a protective aluminum oxide trap layer intended to help shield the sensing element from silicone and lead contamination, supporting consistent performance and long service life.