Walker 350-33063 Oxygen Sensor

Reliable Oxygen Sensor for INFINITI, Nissan, and Mercury Vehicles

The Walker 350-33063 oxygen sensor is designed specifically for select INFINITI, Nissan, and Mercury models. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance by providing precise air-fuel mixture data to the vehicle’s engine control unit.

• Heated sensor type for faster warm-up and improved efficiency
• Specific fit for models including Nissan 300ZX, Pathfinder, Sentra, and INFINITI Q45
• 15.28-inch wiring harness length with 3 wires of 20 gauge measurement
• Threaded mounting type with an 18.0 mm thread diameter for secure installation
• Radiused polygon male connector for reliable electrical connection
• Overall length of 18.82 inches to accommodate factory fitment requirements

Walker Products Aftermarket Line Overview

The Walker Products Aftermarket line offers a range of emission control components engineered to meet or exceed OEM specifications. This oxygen sensor from Walker’s aftermarket series is built to provide consistent performance and durability, making it a suitable replacement part for maintaining emission standards in compatible INFINITI, Nissan, and Mercury vehicles.

Detailed Oxygen Sensor Description

This Walker oxygen sensor (part number 350-33063) features a heated sensor element that allows it to reach operating temperature quickly, reducing emissions during cold starts. The sensor’s 3-wire design includes a dedicated heater circuit, improving responsiveness and accuracy. Its specific fitment ensures compatibility with models such as the Nissan Frontier, Maxima, and Mercury Villager, among others. The radiused polygon male connector and threaded mounting type provide a secure and stable installation, minimizing the risk of sensor failure due to vibration or poor connection.

Common Applications and Issues Addressed

• Helps correct inaccurate air-fuel mixture readings causing poor fuel economy
• Resolves engine performance issues related to faulty oxygen sensors
• Reduces emissions by ensuring proper catalytic converter function
• Prevents check engine light triggers related to sensor malfunction
• Supports compliance with emission regulations for specific INFINITI, Nissan, and Mercury models

Installation Notes and Tips

• Ensure vehicle compatibility by verifying make, model, and year before installation
• Use appropriate tools to avoid damaging the 18.0 mm threaded sensor mount
• Check connector orientation; the radiused polygon male connector must align correctly for secure fit
• Inspect wiring harness length (15.28 inches) to confirm proper routing without tension
• Follow vehicle manufacturer torque specifications when installing the sensor

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. The 350-33063 part undergoes rigorous testing to ensure durability and reliable performance under normal operating conditions. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to support long-term use in compatible INFINITI, Nissan, and Mercury vehicles.