Walker 350-34190 Oxygen Sensor - Downstream

Overview of Walker 350-34190 Oxygen Sensor

The Walker 350-34190 oxygen sensor is designed specifically for Nissan Frontier, Sentra, 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 Nissan Frontier, Sentra, and Xterra
• 26.69-inch wiring harness length for precise installation
• 20 gauge wire with 4-wire configuration
• Radiused polygon female connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 30.24 inches for proper fitment

Detailed Product Description

This Walker oxygen sensor, part number 350-34190, is engineered to meet the exact specifications required by Nissan Frontier, Sentra, and Xterra vehicles. Featuring a heated sensor element, it provides quicker warm-up times compared to unheated sensors, improving fuel efficiency and reducing emissions sooner after engine start. The 4-wire design includes a dedicated heater circuit and signal wires, ensuring reliable sensor operation and accurate data transmission to the vehicle’s engine control unit.

The sensor’s wiring harness length of 26.69 inches allows for proper routing and connection without excess slack, while the 20 gauge wire ensures durability and resistance to electrical interference. The radiused polygon female connector is designed for a secure and precise fit, minimizing the risk of connection issues. Additionally, the threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the designated exhaust port.

Walker Products Aftermarket Line

Walker Products Aftermarket offers a range of emission control components designed to meet or exceed OEM standards. This oxygen sensor is part of their aftermarket line, providing a reliable replacement option tailored for specific vehicle applications. The focus on exact fitment and quality materials supports consistent sensor performance and vehicle compliance with emissions regulations.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Nissan Frontier, Sentra, and Xterra
• Helps resolve rough idling and poor fuel economy caused by inaccurate oxygen readings
• Reduces engine hesitation and stalling related to sensor malfunction
• Assists in passing emissions inspections by maintaining proper exhaust gas monitoring
• Prevents check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

• Ensure vehicle compatibility with Nissan Frontier, Sentra, or Xterra before installation
• Use appropriate tools to remove the old sensor and avoid damaging the exhaust manifold threads
• Connect the radiused polygon female connector securely to the vehicle wiring harness
• Verify the wiring harness length and routing to prevent strain or interference
• Follow torque specifications for the 18.0 mm threaded mounting to ensure proper sealing

Quality Assurance and Warranty

Walker Products Aftermarket oxygen sensors are manufactured to meet stringent quality standards. While specific warranty details for part number 350-34190 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to support long-term reliability and performance.