Walker 350-34320 Oxygen Sensor

Walker 350-34320 Oxygen Sensor Overview

Walker Products 350-34320 is a heated oxygen sensor built as a direct OE-style replacement for specific upstream and downstream applications. It is engineered for vehicles that rely on accurate exhaust feedback to help the ECU manage fuel delivery and emissions performance.

Compatible With select Dodge, Jeep, Chrysler, and Mitsubishi applications, including Dodge Ram 1500, Jeep Wrangler, and Mitsubishi Mirage fitments listed below. The Walker Products Aftermarket line focuses on application-specific sensors with the correct position, connector style, and signal output for the vehicle.

Key Features

• Heated oxygen sensor for faster operating temperature and stable feedback
• Specific-fit design for the listed upstream and downstream positions
• 4-wire configuration with female radiused polygon connector
• Threaded mounting with 18.0 mm thread diameter
• 10.16 wiring harness length and 13.7 overall length
• Built for ECU diagnostic feedback on supported vehicle applications

Detailed Description

Walker Products 350-34320 is part of the Walker Products Aftermarket engine management sensor line, developed as an OE replacement for many vehicles worldwide. This oxygen sensor is used in emissions control systems where the ECU monitors exhaust oxygen content to adjust air-fuel ratio and confirm catalyst and sensor performance. The specific-fit design helps ensure the correct mounting position and connector configuration for the listed vehicles, including Dodge Ram 1500 oxygen sensor replacement applications, Jeep Wrangler oxygen sensor service, and Mitsubishi Mirage upstream sensor coverage.

This part number 350-34320 is listed across multiple Chrysler, Dodge, and Jeep platforms, with coverage for upstream and downstream positions depending on the vehicle and emissions package. It is also listed for 2015 Mitsubishi Mirage upstream service. If the original sensor has triggered a fault code, caused poor running, increased fuel use, or illuminated the malfunction indicator light, this replacement is intended to restore proper exhaust feedback to the ECU.

Common Problems This Sensor Can Address

• Check engine light related to oxygen sensor performance
• Fault codes stored in the ECU for sensor or emissions system issues
• Rough engine operation caused by incorrect air-fuel feedback
• Increased fuel consumption from inaccurate exhaust readings
• Higher exhaust emissions from a failing heated oxygen sensor

Installation Notes and Tips

Verify the exact year, make, model, and sensor position before ordering. This part number 350-34320 is used in both upstream and downstream locations across the listed fitments, so matching the bank and sensor position is essential. Inspect the sensor wiring harness and connector for heat damage, corrosion, or physical wear before installation, since damaged wiring can shorten sensor life and affect signal quality. Confirm thread diameter, connector shape, and harness length against the original unit before replacement.

Quality Assurance

Walker Products has manufactured engine management and fuel system components since 1946 and operates as an Automotive ISO9001/TS 16949 certified company. The Walker Products Aftermarket line is built around application-specific replacement parts that follow the required fitment and ECU feedback needs for the listed vehicles.