Walker 350-31013 Oxygen Sensor - Upstream

Walker 350-31013 Oxygen Sensor for Upstream Applications

Walker Products 350-31013 is a specific-fit, non-heated oxygen sensor engineered as an OE-style replacement for select Chrysler, Dodge, and Plymouth vehicles. It is built for upstream placement and provides the ECU with the feedback needed to monitor air-fuel performance on older emission control systems.

Key Features

• Specific-fit oxygen sensor for upstream installation
• Non-heated design with 1-wire configuration
• Female connector with radiused polygon shape
• 18.0 mm thread diameter and threaded mounting type
• 4.45 in. wiring harness length and 20-gauge wire
• Walker Products Aftermarket line for engine management and oxygen sensor replacement

Product Details

Walker Products Aftermarket focuses on engine management and oxygen/air-fuel sensors developed as replacement parts for original equipment applications. Part number 350-31013 is application-specific and positioned for upstream use, making it a direct replacement choice for vehicles that rely on accurate exhaust feedback to manage fuel delivery and emissions. This part number is listed for a wide range of 1980-1990 Chrysler, Dodge, and Plymouth models, including Dodge D150, Dodge Caravan, Chrysler LeBaron, and Plymouth Voyager.

This part cross-references no listed interchange numbers in the provided data.

What It Helps Address

• Check engine or malfunction indicator light related to oxygen sensor performance
• Poor engine operation caused by incorrect exhaust feedback
• Increased fuel consumption from inaccurate air-fuel monitoring
• Higher exhaust emissions on affected upstream systems
• Fault codes stored in the ECU for sensor-related issues

Installation Notes

Install in the upstream position only for the listed applications. Verify connector shape, thread diameter, harness length, and wire count before installation. Inspect the sensor wiring harness and connector for physical damage, since damaged wiring can shorten service life and affect ECU feedback. Confirm vehicle-specific fitment for Chrysler, Dodge, and Plymouth models such as Dodge D150, Dodge Caravan, and Plymouth Voyager before ordering.

Quality Assurance

Walker Products states that its engine management sensors are developed under Automotive ISO9001/TS 16949-certified manufacturing practices and have been produced for vehicle-specific applications since 1946. Part number 350-31013 is built to match the listed fitment and upstream sensor position requirements.