Walker 350-34342 Oxygen Sensor - Downstream

Walker 350-34342 Downstream Oxygen Sensor

Walker Products 350-34342 is a specific-fit heated oxygen sensor for downstream applications on select Chrysler, Dodge, and Plymouth minivans. It is engineered as an OE-style replacement to deliver the diagnostic feedback the ECU expects from the exhaust system.

Compatible With 1996-2000 Chrysler Grand Voyager, 1996-2000 Chrysler Town & Country, 2000 Chrysler Voyager, 1996-2000 Dodge Caravan, 1996-2000 Dodge Grand Caravan, 1996-2000 Plymouth Grand Voyager, and 1996-2000 Plymouth Voyager in downstream positions.

Key Features

• Part number 350-34342 from Walker Products Aftermarket
• Heated oxygen sensor for downstream placement
• Specific fit for targeted vehicle applications
• 4-wire design with female connector
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon connector shape for application-specific fitment
• Wiring harness length: 9.76 in.; overall length: 13.31 in.

Product Details

Walker Products 350-34342 is built for downstream exhaust monitoring on 1996-2000 Chrysler Grand Voyager, Chrysler Town & Country, Chrysler Voyager, Dodge Caravan, Dodge Grand Caravan, Plymouth Grand Voyager, and Plymouth Voyager models. As a heated sensor, it helps the ECU monitor exhaust oxygen content after the catalytic converter, supporting proper fuel control and emissions system feedback. Walker Products positions its Engine Management and Oxygen/Air-Fuel sensors as OE replacement parts, and this sensor follows that application-specific approach with the correct connector, wire count, and threaded mount.

The Walker Products Aftermarket line focuses on engine management and oxygen sensor coverage for vehicle-specific installations. Part number 350-34342 is designed around the listed downstream applications, including Bank 1 Sensor 2 references where noted in fitment data. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Issues This Sensor May Address

• Check engine light or malfunction indicator light related to downstream oxygen sensor performance
• Poor engine operation caused by inaccurate exhaust feedback
• Increased fuel consumption from incorrect air-fuel correction
• Higher exhaust emissions from a failing sensor signal
• Stored ECU fault codes tied to the affected sensor circuit

Installation Notes and Tips

Verify the connector shape, wire count, and threaded mounting style before installation. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten service life and affect signal quality. Confirm the vehicle’s emissions configuration, including notes such as left lower emissions or TLEV exclusions where listed, before ordering and installing.

For fitment-specific searches, this part is commonly referenced as a downstream oxygen sensor for Chrysler Grand Voyager, Dodge Caravan, and Plymouth Voyager applications. Confirm the exact year, model, and downstream position against the vehicle’s emissions setup before replacement.

Quality Assurance

Walker Products has manufactured engine management and sensor components since 1946 and operates under Automotive ISO9001/TS 16949 certification. The brand’s OE-replacement focus and application-specific cataloging support accurate fitment for the listed Chrysler, Dodge, and Plymouth vehicles.