Walker 250-24128 Oxygen Sensor - Downstream, Downstream Rear or Upstream

Overview of Walker 250-24128 Oxygen Sensor

The Walker 250-24128 oxygen sensor is designed specifically for select Kia and Mazda vehicles, including the Miata, Millenia, Protege, and Sephia 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 Kia and Mazda models
• 29.45-inch wiring harness length with 4 wires
• 20 gauge wire for reliable signal transmission
• Radiused polygon female connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 32.99 inches for proper installation

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-24128) is engineered to meet the exact specifications of your vehicle’s original equipment. Featuring a heated sensor element, it provides quicker warm-up times, which helps reduce emissions during cold starts. The sensor includes a 29.45-inch wiring harness with four 20-gauge wires, ensuring consistent and accurate data transmission to the engine control unit. The radiused polygon female connector is designed for a secure and precise fit, preventing connection issues. Its threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system.

The Walker Products OE line focuses on delivering parts that match original equipment standards, ensuring compatibility and performance. This oxygen sensor is part of that line, providing a reliable replacement that maintains your vehicle’s emission control system integrity.

Common Applications and Issues Addressed

• Restores accurate air-fuel mixture readings for Kia Miata and Mazda Protege
• Helps resolve engine performance problems related to faulty oxygen sensors
• Reduces emissions by ensuring proper sensor operation in Mazda Millenia and Kia Sephia
• Prevents check engine light triggers caused by sensor failure
• Improves fuel efficiency by maintaining correct sensor feedback

Installation Notes and Tips

• Ensure the vehicle is cool before removing the old sensor to avoid burns
• Use appropriate tools for the 18.0 mm threaded mounting to prevent damage
• Verify connector compatibility with the radiused polygon female plug
• Check wiring harness routing to avoid contact with hot exhaust components
• Follow vehicle-specific service manual instructions for sensor replacement

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet or exceed OEM standards, ensuring durability and reliable performance. This part undergoes rigorous testing to confirm fitment and function for Kia and Mazda vehicles. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to provide confidence in your purchase.