Walker 250-25084 Oxygen Sensor - Upstream

Overview of Walker 250-25084 Oxygen Sensor for Mitsubishi Vehicles

The Walker Products OE 250-25084 oxygen sensor is designed specifically for select Mitsubishi models, including the Lancer, Outlander, and Outlander Sport. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data to the vehicle's engine management system.

• Heated oxygen sensor with 5-wire configuration
• Specific fit for Mitsubishi Lancer, Outlander, and Outlander Sport
• Threaded mounting type with 18.0 mm thread diameter
• 25.12-inch wiring harness length with 20 gauge wire
• Radiused polygon male connector for secure connection
• Overall length of 28.66 inches for proper installation

Detailed Product Features and Specifications

This Walker oxygen sensor (part number 250-25084) features a heated sensor type that allows for faster warm-up times and improved sensor responsiveness. The 5-wire design supports both sensor heating and signal transmission, ensuring reliable data output. The wiring harness length of 25.12 inches and 20 gauge wire provide durability and flexibility during installation. The sensor’s threaded mounting type with an 18.0 mm diameter ensures a secure fit in the exhaust system. Additionally, the radiused polygon male connector is designed for a precise and stable electrical connection, reducing the risk of disconnection or signal loss.

Walker Products OE Line Information

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed OEM specifications. This oxygen sensor is engineered to match the exact fit and function required by Mitsubishi vehicles, providing consistent performance and emissions compliance. Using a Walker Products OE sensor helps maintain the integrity of the vehicle’s emission control system and supports long-term engine efficiency.

Common Applications and Issues Addressed

• Replacement for faulty or failing oxygen sensors in Mitsubishi Lancer, Outlander, and Outlander Sport
• Helps resolve rough idling and poor fuel economy caused by inaccurate air-fuel mixture readings
• Reduces emissions by ensuring proper sensor feedback to the engine control unit
• Prevents check engine light triggers related to oxygen sensor faults
• Supports smooth engine performance and drivability

Installation Notes and Tips

When installing the Walker 250-25084 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the threaded mounting hole. Verify the connector type matches the vehicle’s wiring harness to ensure a secure connection. Properly route the wiring harness to prevent contact with hot exhaust components or moving parts. After installation, clear any diagnostic trouble codes and perform a system check to confirm correct operation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and undergo rigorous testing to ensure durability and performance. This part is designed to provide reliable operation under normal driving conditions. Warranty coverage details should be confirmed with the point of purchase or manufacturer documentation.