Walker 350-34036 Oxygen Sensor - Downstream, Upstream or Upstream Front

Overview of Walker Oxygen Sensor 350-34036

The Walker 350-34036 oxygen sensor is designed specifically for select Mazda models, including the MPV, MX-3, and Protege. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine management system.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Mazda MPV, MX-3, and Protege models
• 7.4-inch wiring harness length for flexible installation
• 20 gauge wire for reliable signal transmission
• Radiused polygon female connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 10.94 inches for proper fitment

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components engineered to meet or exceed OEM specifications. The line emphasizes precise fitment and durability, making it suitable for maintaining factory-level emissions performance in Mazda vehicles.

Product Features and Specifications

The Walker 350-34036 oxygen sensor features a heated sensor type that allows for quicker activation and more accurate readings during engine warm-up. The 4-wire design includes two wires for the heating element and two for the sensor signal, ensuring consistent performance. The wiring harness length of 7.4 inches offers sufficient reach for installation without excess slack. The connector’s radiused polygon shape and female gender provide a secure and reliable electrical connection. The sensor mounts via a threaded fitting with an 18.0 mm diameter, matching factory specifications for Mazda MPV, MX-3, and Protege models.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Mazda MPV, MX-3, and Protege
• Helps resolve engine performance issues related to incorrect air-fuel mixture
• Reduces emissions by providing accurate feedback to the engine control unit
• Prevents check engine light triggers caused by sensor malfunctions
• Improves fuel efficiency by maintaining proper combustion control

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Remove the old sensor carefully to avoid damaging the mounting threads. Use anti-seize compound on the sensor threads if recommended by the vehicle manufacturer. Connect the wiring harness securely, matching the radiused polygon female connector to the corresponding male connector on the vehicle. Verify proper sensor operation after installation by checking for error codes or performing a diagnostic scan.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards and OEM fitment requirements. While specific warranty details for part number 350-34036 may vary, Walker typically offers limited warranties covering defects in materials and workmanship. Refer to product documentation or the manufacturer for exact warranty terms.