Walker 350-34473 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker 350-34473 Oxygen Sensor

The Walker 350-34473 oxygen sensor is designed specifically for select BMW models, including the 318i, 318is, 318ti, 325is, 530i, 840Ci, and M3. 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 sensor type for faster warm-up and accurate readings
• Specific fit for BMW 318i, 318is, 318ti, 325is, 530i, 840Ci, and M3 models
• 14.29-inch wiring harness length with 4 wires of 20 gauge
• Radiused polygon female connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 17.83 inches for proper installation depth

Detailed Product Description

The Walker 350-34473 oxygen sensor is engineered to meet the exact specifications of various BMW vehicles, ensuring compatibility and reliable performance. Featuring a heated sensor element, it reaches operating temperature quickly, which helps reduce emissions during cold starts. The sensor includes a 14.29-inch wiring harness with four 20-gauge wires, providing a robust electrical connection. Its radiused polygon female connector ensures a secure and precise fit, minimizing the risk of disconnection or signal loss. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation and a tight seal within the exhaust system.

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on delivering quality emission control components designed to meet or exceed OEM standards. Walker Products Aftermarket parts are developed to provide reliable performance and durability, making them suitable replacements for original equipment sensors in BMW vehicles.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved engine efficiency
• Helps resolve rough idling and engine hesitation caused by faulty sensors
• Reduces increased emissions and failed emissions tests
• Prevents check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring proper combustion control

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate tools to avoid damaging the sensor or wiring harness
• Verify connector type and orientation before installation to ensure proper fit
• Apply anti-seize compound on the threaded portion if recommended by manufacturer
• Clear any diagnostic trouble codes after installation to reset the engine control unit

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet industry standards for durability and performance. The 350-34473 part number is manufactured to provide consistent sensor response and long service life. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship, supporting reliable operation in BMW 318i, 318is, 318ti, 325is, 530i, 840Ci, and M3 models.