Walker 250-24371 Oxygen Sensor - Downstream

Overview of Walker 250-24371 Oxygen Sensor for Mercury and Nissan

The Walker Products OE 250-24371 oxygen sensor is designed specifically for select Mercury and Nissan vehicles, including the Quest and Villager models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor with 4-wire design for reliable operation
• Specific fit for Mercury Quest and Nissan Villager models
• 22.76-inch wiring harness length for proper installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon female connector for secure electrical connection
• 20 gauge wire for durability and signal integrity
• Overall length of 26.3 inches to accommodate vehicle fitment

Detailed Product Description

The Walker Products OE 250-24371 oxygen sensor is engineered to meet the exact specifications of Mercury Quest and Nissan Villager vehicles. Featuring a heated sensor type, it quickly reaches operating temperature to provide accurate oxygen level readings, which are critical for efficient fuel combustion and emissions control. The sensor includes a 4-wire configuration with 20 gauge wires, ensuring stable electrical signals and compatibility with the vehicle’s engine management system.

The wiring harness length of 22.76 inches and an overall length of 26.3 inches allow for proper routing and installation within the engine bay. The sensor mounts via a threaded connection with an 18.0 mm diameter, providing a secure and leak-free fit. Its radiused polygon female connector ensures a precise and reliable electrical connection, reducing the risk of sensor failure due to poor contact.

Walker Products OE Brand Line

Walker Products OE is a product line focused on delivering original equipment quality parts that meet or exceed factory specifications. This oxygen sensor is part of that line, designed to provide a direct replacement for the original sensor in Mercury and Nissan vehicles. The OE line emphasizes fit, form, and function to maintain vehicle performance and emissions compliance.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved engine efficiency
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce vehicle emissions by ensuring proper sensor operation
• Prevents rough idling and poor fuel economy caused by faulty sensors
• Supports smooth engine performance and drivability

Installation Notes and Tips

When installing the Walker 250-24371 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct socket size for the 18.0 mm threaded sensor to prevent damage. Verify the radiused polygon female connector is fully seated and locked to avoid electrical issues. Follow vehicle-specific torque specifications to secure the sensor properly. It is recommended to inspect wiring harnesses for damage before installation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet stringent quality standards, ensuring reliable performance and durability. While specific warranty details for part number 250-24371 should be confirmed at the point of purchase, Walker typically offers coverage against defects in materials and workmanship to support long-term use in Mercury and Nissan vehicles.