Walker 350-34274 Oxygen Sensor - Downstream Left

Overview of Walker Oxygen Sensor 350-34274 for Infiniti Q45

The Walker Products Aftermarket oxygen sensor 350-34274 is designed specifically for the Infiniti Q45. This heated oxygen sensor features a threaded mounting type and a radiused polygon female connector, ensuring precise fitment and reliable performance in emission control systems.

• Heated oxygen sensor with 4-wire configuration
• Specific fit for Infiniti Q45 models
• Threaded mounting with 18.0 mm thread diameter
• Radiused polygon female connector for secure connection
• Wiring harness length of 21.97 inches and overall length of 25.51 inches
• Wire gauge measurement of 20 for durability and signal integrity

Detailed Product Description

This Walker oxygen sensor (part number 350-34274) is engineered to meet the exact specifications required by the Infiniti Q45. The sensor’s heated design allows it to reach optimal operating temperature quickly, improving fuel efficiency and reducing emissions. The 4-wire setup includes two wires for the heater circuit and two for the sensor signal, providing accurate oxygen level readings to the vehicle’s engine control unit (ECU). The radiused polygon female 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.

Walker Products Aftermarket offers a comprehensive line of emission control components designed to meet or exceed OEM standards. This product line focuses on delivering reliable, vehicle-specific sensors that support proper engine management and emissions compliance. The 350-34274 oxygen sensor is part of this line, providing a direct replacement solution for Infiniti Q45 owners seeking quality and compatibility.

Common Applications and Issues Addressed

• Restores accurate air-fuel mixture readings for optimal engine performance
• Helps resolve check engine light triggers related to oxygen sensor faults
• Improves fuel economy by ensuring proper combustion control
• Reduces harmful emissions by maintaining correct sensor feedback
• Prevents rough idling and engine hesitation caused by faulty sensors

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate tools to avoid damaging the threaded mounting
• Verify connector type matches the vehicle harness before installation
• Apply anti-seize compound on threads if recommended by manufacturer
• Clear any diagnostic trouble codes after installation to reset the ECU

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors undergo rigorous testing to meet emission control standards and ensure durability under normal operating conditions. The 350-34274 sensor is manufactured to provide consistent performance and fitment for the Infiniti Q45. Warranty coverage details should be confirmed with the product documentation or supplier, as they may vary.