Walker 250-24983 Oxygen Sensor - Downstream Front, Downstream Rear or Downstream Right

Overview of Walker Products OE Oxygen Sensor 250-24983

The Walker Products OE Oxygen Sensor 250-24983 is designed specifically for select Ford, Lincoln, Mazda, and Mercury vehicles. 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 4-wire design for reliable operation
• Specific fit for Ford, Lincoln, Mazda, and Mercury models including CX-9, Edge, Explorer, Fusion, and Transit series
• Threaded mounting type with an 18.0 mm thread diameter for secure installation
• Radiused polygon female connector for proper electrical connection
• Wiring harness length of 10.35 inches and overall length of 13.9 inches
• Wire gauge measurement of 20 for durability and signal integrity

Detailed Product Description

This oxygen sensor from Walker Products OE is engineered to meet the exact specifications of the original equipment for a precise fit and function. The heated sensor type allows for faster warm-up times, improving emissions control during cold starts. Featuring a 4-wire configuration, it includes both sensor and heater circuits to maintain optimal sensor temperature. The radiused polygon female connector ensures a secure and corrosion-resistant electrical connection, while the threaded mounting type with an 18.0 mm diameter provides a stable and leak-free installation. With a wiring harness length of 10.35 inches and an overall length of 13.9 inches, this sensor is designed to fit seamlessly into the exhaust system of compatible vehicles.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering emission control components that meet or exceed original equipment standards. This oxygen sensor is part of that line, ensuring compatibility and performance for specific vehicle applications. Walker Products OE parts are engineered to provide reliable operation and maintain compliance with emissions regulations, making them suitable replacements for factory-installed sensors.

Compatible Vehicles and Applications

• Ford models including Edge, Explorer, Flex, Fusion, Taurus, and Transit series (Transit-150, Transit-250, Transit-350, Transit-350 HD)
• Lincoln models such as Milan, MKS, MKT, MKX, and MKZ
• Mazda CX-9
• Mercury models including Milan

Common Issues Addressed by This Oxygen Sensor

• Check engine light triggered by faulty oxygen sensor readings
• Poor fuel economy due to incorrect air-fuel mixture data
• Increased emissions and failed emissions tests
• Engine performance problems such as rough idling or hesitation
• Heater circuit failure causing delayed sensor response

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Disconnect the battery to prevent electrical shorts. Remove the old oxygen sensor carefully using the appropriate oxygen sensor socket. Verify the thread size (18.0 mm) matches the exhaust port. Connect the 4-wire harness to the radiused polygon female connector securely. Avoid twisting or stretching the wiring harness during installation. After installation, clear any diagnostic trouble codes and verify sensor operation with a scan tool.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet original equipment specifications, ensuring reliable performance and durability. While specific warranty details are not provided here, Walker typically offers limited warranties covering defects in materials and workmanship. Refer to the product packaging or manufacturer documentation for exact warranty terms.