Walker 350-34888 Oxygen Sensor - Downstream or Downstream Right

Overview of Walker 350-34888 Oxygen Sensor

The Walker 350-34888 oxygen sensor is designed specifically for select BMW models, providing precise emissions control and engine performance monitoring. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for BMW models including 335i, 435i, M3, X5, and more
• 18.50-inch wiring harness length with 20-gauge wire
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon male connector for reliable connection
• Overall length of 21.65 inches for optimal placement

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34888) is engineered to meet the exact specifications required by various BMW vehicles such as the 235i, 335i xDrive, 640i Gran Coupe, and M4. The sensor’s heated design ensures faster activation and improved fuel efficiency by accurately measuring oxygen levels in the exhaust gases. Featuring a 4-wire setup with 20-gauge wiring, it supports reliable signal transmission and heater operation. The 18.50-inch wiring harness length and radiused polygon male connector facilitate straightforward installation and secure electrical connection. The threaded mounting type with an 18.0 mm diameter allows for a precise fit in the exhaust system, ensuring consistent sensor performance.

Compatible BMW Models and Applications

• BMW 235i, 235i xDrive
• BMW 335i, 335i xDrive
• BMW 435i, 435i Gran Coupe, 435i xDrive, 435i xDrive Gran Coupe
• BMW 535i GT, 535i GT xDrive
• BMW 640i, 640i Gran Coupe, 640i xDrive, 640i xDrive Gran Coupe
• BMW ActiveHybrid 3, ActiveHybrid 5
• BMW i3, i3s, i8
• BMW M2, M3, M4, M135i, M235i, M235i xDrive
• BMW X4, X5, X6

Common Issues Addressed by This Oxygen Sensor

• Incorrect air-fuel mixture readings causing poor fuel economy
• Check engine light triggered by faulty oxygen sensor signals
• Increased emissions due to sensor malfunction
• Engine performance issues such as rough idling or hesitation
• Failed emissions tests related to sensor degradation

Installation Notes and Tips

When installing the Walker 350-34888 oxygen sensor, ensure the vehicle is cooled down to avoid 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. The 18.50-inch wiring harness length provides flexibility for routing, but avoid sharp bends or contact with hot exhaust components. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper sensor operation.

Quality Assurance and Warranty

Walker Products Aftermarket parts are manufactured to meet or exceed OEM standards for durability and performance. The 350-34888 oxygen sensor undergoes rigorous testing to ensure reliable operation in demanding conditions. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in BMW vehicles.