Walker 250-241143 Oxygen Sensor - Downstream

Overview of Walker 250-241143 Oxygen Sensor

The Walker Products OE 250-241143 oxygen sensor is designed specifically for select Audi, Porsche, and Volkswagen models. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector, ensuring precise fitment and reliable performance in emission control systems.

• Heated oxygen sensor with 4 wires for accurate readings
• Specific fit for Audi A4, A4 allroad, A4 Quattro, A5 Quattro, A5 Sportback, A6, A6 Quattro, Porsche Macan, Volkswagen Jetta, and Q7
• Threaded mounting with 18.0 mm thread diameter
• 14.29-inch wiring harness length and 17.83-inch overall length
• 20 gauge wire for durability and signal integrity
• Radiused polygon male connector for secure electrical connection

Walker Products OE Brand Line Details

The Walker Products OE line focuses on delivering original equipment quality parts that meet or exceed factory specifications. The 250-241143 oxygen sensor is part of this line, providing a direct replacement solution engineered to maintain proper emission control and engine performance for the specified Audi, Porsche, and Volkswagen vehicles.

Technical Description and Features

This oxygen sensor is a heated type, which allows it to reach operating temperature quickly for faster and more accurate air-fuel mixture readings. It includes four wires with 20 gauge measurement, supporting both sensor signal and heater circuit functions. The sensor’s 18.0 mm threaded mounting ensures compatibility with the exhaust system ports on the listed vehicle models. The connector features a radiused polygon shape with a male gender, designed to fit securely with the vehicle’s wiring harness. The wiring harness length of 14.29 inches and overall length of 17.83 inches provide sufficient reach for installation without excess slack.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for improved fuel efficiency
• Resolves check engine light codes related to oxygen sensor failure
• Helps reduce harmful emissions by maintaining proper air-fuel ratio
• Prevents rough idling and engine performance issues caused by faulty sensors
• Supports proper operation of catalytic converters in Audi, Porsche, and Volkswagen models

Installation Notes and Tips

Ensure the vehicle is cool before beginning installation to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the exhaust threads. Verify the connector type matches the vehicle harness before installation. Tighten the sensor to the manufacturer’s torque specifications to prevent leaks. Inspect wiring for damage and secure the harness to prevent strain or disconnection.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet original equipment standards, ensuring reliable performance and durability. The 250-241143 part number undergoes rigorous testing to comply with emission control requirements. Warranty coverage details should be confirmed with the product documentation or supplier.