Walker 350-33081 Oxygen Sensor - Upstream Left

Overview of Walker 350-33081 Oxygen Sensor

The Walker 350-33081 oxygen sensor is designed specifically for select INFINITI and Nissan vehicles, including the Frontier, Pathfinder, QX4, and Xterra models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases effectively.

• Heated sensor type for faster response times
• Specific fit for INFINITI and Nissan Frontier, Pathfinder, QX4, and Xterra
• Threaded mounting type with 18.0 mm thread diameter
• 34.37 inches wiring harness length with 3 wires of 20 gauge
• Radiused polygon male connector for secure connection
• Overall length of 37.91 inches for proper installation

Detailed Product Description

The Walker Products Aftermarket 350-33081 oxygen sensor is engineered to meet the exact specifications required by your vehicle’s emission system. Featuring a heated sensor element, it provides quicker warm-up times compared to non-heated sensors, which helps reduce emissions during cold starts. The sensor’s 3-wire configuration and 20 gauge wire ensure reliable signal transmission, while the radiused polygon male connector offers a secure and precise fit. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust manifold or pipe. With an overall length of 37.91 inches and a wiring harness length of 34.37 inches, this oxygen sensor is tailored for specific fitment on INFINITI and Nissan models such as the Frontier, Pathfinder, QX4, and Xterra.

Walker Products Aftermarket Line

Walker Products Aftermarket is a dedicated product line focused on providing replacement emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, ensuring compatibility and durability for emission systems in INFINITI and Nissan vehicles. The line emphasizes precise fitment and reliable performance, supporting emission compliance and engine efficiency.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces engine misfires caused by faulty oxygen sensors
• Prevents increased emissions and failed emissions tests
• Addresses rough idling and poor fuel economy issues
• Resolves check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate tools for the 18.0 mm threaded sensor to prevent damage
• Verify connector type matches the vehicle harness for proper connection
• Do not over-tighten the sensor to avoid thread damage
• Check for exhaust leaks after installation to ensure sensor accuracy

Quality Assurance and Warranty

The Walker 350-33081 oxygen sensor is manufactured to meet strict quality standards for emission control components. It undergoes rigorous testing to ensure durability and reliable performance in demanding conditions. While specific warranty details may vary, Walker Products Aftermarket parts typically come with a limited warranty covering defects in materials and workmanship.