Walker 350-33088 Oxygen Sensor - Upstream Front, Upstream Rear or Upstream Right

Overview of Walker 350-33088 Oxygen Sensor

The Walker 350-33088 oxygen sensor is designed specifically for select INFINITI and Nissan vehicles, including the I30, Maxima, Pathfinder, and QX4 models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated sensor type for faster response times
• Specific fit for INFINITI and Nissan models
• 24.33-inch wiring harness length for proper installation
• 20 gauge wire measurement with 3 wires for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 27.87 inches for compatibility with factory locations

Walker Products Aftermarket Line Details

This oxygen sensor is part of the Walker Products Aftermarket line, which focuses on providing replacement emission control components that meet or exceed OEM specifications. The line emphasizes precise fitment and durability, making the 350-33088 sensor a reliable choice for maintaining emission standards in INFINITI and Nissan vehicles.

Technical Description and Features

The Walker 350-33088 oxygen sensor features a heated design that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Its 3-wire configuration supports both sensor signal and heater circuit functions. The radiused polygon male connector ensures a secure and corrosion-resistant connection, while the threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system. The wiring harness length of 24.33 inches and overall length of 27.87 inches are tailored to fit the specific routing and mounting points on compatible INFINITI and Nissan models.

Common Applications and Problem Resolution

• Helps correct engine misfires caused by faulty oxygen sensor readings
• Reduces rough idling and poor acceleration linked to sensor failure
• Addresses increased emissions and failed emissions tests
• Improves fuel economy by providing accurate air-fuel mixture data
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

When installing the Walker 350-33088 oxygen sensor, ensure the vehicle is cooled down to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the radiused polygon male connector aligns properly with the vehicle harness to ensure a secure fit. Avoid twisting or stretching the wiring harness beyond its 24.33-inch length to maintain sensor integrity. It is recommended to clear any diagnostic trouble codes after installation to reset the vehicle’s engine control unit.

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. The 350-33088 part number undergoes rigorous testing to comply with emission control requirements. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in INFINITI and Nissan vehicles.