Walker 350-34095 Oxygen Sensor - Downstream or Upstream

Overview of Walker 350-34095 Oxygen Sensor for BMW Models

The Walker 350-34095 oxygen sensor is designed specifically for select BMW vehicles, including the 323i, 323is, 323ti, 328i, 328is, 528i, M3, and Z3 models. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for BMW 3 and 5 Series, M3, and Z3 models
• 36.54-inch wiring harness length for flexible installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wire gauge measurement of 20 for reliable signal transmission
• Overall length of 40.08 inches for proper fitment

Detailed Features and Specifications

This Walker Products Aftermarket oxygen sensor (part number 350-34095) is engineered with a heated sensor element to provide faster response times and improved emissions control. The 4-wire design includes two wires for the heater circuit and two for the sensor signal, ensuring consistent operation under various engine conditions. The wiring harness length of 36.54 inches allows for proper routing within the engine bay, while the 20-gauge wire ensures durability and signal integrity. The sensor mounts via a threaded connection with an 18.0 mm diameter, compatible with the exhaust system of specific BMW models. The radiused polygon male connector provides a secure and precise fit, reducing the risk of disconnection or signal loss.

Walker Products Aftermarket Line

The Walker Products Aftermarket line focuses on delivering reliable emission control components designed to meet or exceed OEM specifications. This oxygen sensor is part of that line, offering a direct replacement solution tailored for BMW vehicles. The product line emphasizes quality materials and precise engineering to maintain vehicle emissions compliance and engine efficiency.

Common Applications and Problem Resolution

• Restores accurate air-fuel ratio readings for BMW 323i, 328i, 528i, M3, and Z3 models
• Resolves check engine light issues related to oxygen sensor faults
• Improves fuel economy by ensuring proper sensor feedback
• Reduces harmful emissions by maintaining correct sensor operation
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Walker 350-34095 oxygen sensor, ensure the engine and exhaust system are cool to prevent burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle harness before installation. Properly route the wiring harness to prevent contact with hot or moving parts. After installation, clear any diagnostic trouble codes and perform a test drive to confirm sensor operation.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet emission control standards and durability requirements. While specific warranty details for part number 350-34095 should be confirmed with the supplier, Walker typically offers coverage against defects in materials and workmanship to ensure long-term reliability.