Walker 350-34688 Oxygen Sensor - Downstream or Upstream

Overview of Walker Oxygen Sensor 350-34688

The Walker 350-34688 oxygen sensor is designed specifically for select Mazda and Suzuki models, including the Forenza, Protege, and Protege5. This heated oxygen sensor features a 7.4-inch wiring harness and a 20-gauge wire measurement, ensuring precise emissions control and optimal engine performance.

• Heated oxygen sensor type for faster response times
• 7.4-inch wiring harness length with 4 wires
• 20-gauge wire measurement for durability and signal integrity
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon female connector for secure fitment
• Overall length of 10.94 inches for proper installation
• Specific fit for Mazda Forenza, Suzuki Protege, and Protege5

Detailed Product Description

This Walker Products Aftermarket oxygen sensor (part number 350-34688) is engineered to meet the exact specifications required by Mazda and Suzuki vehicles such as the Forenza, Protege, and Protege5. The sensor’s heated design allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire configuration and 20-gauge wiring ensure reliable electrical connections, while the radiused polygon female connector provides a secure and precise fit. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation and compatibility with the vehicle’s exhaust system.

The Walker Products Aftermarket line focuses on delivering replacement parts that meet or exceed OEM standards, providing dependable performance and durability. This oxygen sensor is part of that line, offering a direct fit solution for emission control systems in the specified Mazda and Suzuki models.

Common Applications and Issues Addressed

• Restores accurate oxygen level readings for engine control units
• Helps resolve rough idling and poor fuel economy
• Reduces emissions by ensuring proper air-fuel mixture
• Prevents check engine light triggers related to oxygen sensor faults
• Improves overall engine performance and drivability

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate oxygen sensor socket for removal and installation
• Verify connector type matches the vehicle harness (radiused polygon female)
• Do not over-tighten the sensor; follow torque specifications for 18.0 mm thread diameter
• Inspect wiring harness for damage before installation

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet strict quality standards, ensuring reliable operation and longevity. The 350-34688 oxygen sensor undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.