Walker 350-33004 Oxygen Sensor - Upstream

Reliable Oxygen Sensor for Mercury and Nissan Vehicles

The Walker 350-33004 oxygen sensor is designed specifically for select Mercury and Nissan models, including the 240SX, 300ZX, Altima, Maxima, Pickup, Quest, and Villager. This heated oxygen sensor ensures accurate emissions monitoring and optimal engine performance.

• Heated sensor type for faster warm-up and accurate readings
• Specific fit for Mercury and Nissan models listed
• Threaded mounting type with 18.0 mm thread diameter
• 8.39-inch wiring harness length with 3 wires of 20 gauge
• Radiused polygon male connector for secure connection
• Overall length of 11.93 inches for proper installation

Walker Products Aftermarket Line Overview

The Walker Products Aftermarket line offers reliable emission control components designed to meet or exceed OEM specifications. This oxygen sensor from Walker Products Aftermarket provides a direct fit solution with precise wiring and connector design, ensuring compatibility and ease of installation for Mercury and Nissan vehicles.

Detailed Oxygen Sensor Description

This Walker oxygen sensor (part number 350-33004) features a heated sensor element that allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. The sensor includes a radiused polygon male connector with three 20-gauge wires, providing a secure and stable electrical connection. Its threaded mounting type with an 18.0 mm diameter ensures a proper seal and fit in the exhaust system. The wiring harness length of 8.39 inches and overall length of 11.93 inches are designed to match the specific routing and installation requirements of compatible Mercury and Nissan models.

Common Applications and Issues Addressed

• Helps maintain proper air-fuel mixture for efficient combustion
• Reduces engine misfires and rough idling
• Prevents increased emissions and failed emissions tests
• Improves fuel economy by providing accurate oxygen level data
• Resolves check engine light codes related to oxygen sensor failure

Installation Notes and Tips

• Ensure vehicle compatibility with Mercury and Nissan models such as 240SX, 300ZX, Altima, Maxima, Pickup, Quest, and Villager
• Use proper tools to avoid damaging the threaded sensor during installation
• Verify connector type matches the vehicle harness for a secure fit
• Inspect wiring harness length and routing to prevent strain or damage

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet industry standards for durability and performance. While specific warranty details are not provided here, Walker typically offers coverage against defects in materials and workmanship. Using this sensor helps maintain compliance with emission regulations and supports vehicle reliability.