Walker 250-25112 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker 250-25112 Oxygen Sensor

The Walker 250-25112 oxygen sensor is designed specifically for select Audi, Porsche, and Volkswagen models. 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 sensor type for faster response times
• Specific fit for Audi, Porsche, and Volkswagen vehicles
• 24.21-inch wiring harness length with 5 wires
• 20 gauge wire measurement for durability
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 27.55 inches for proper installation

Detailed Product Description

This Walker Products OE oxygen sensor (part number 250-25112) is engineered to meet the exact specifications of various Audi, Porsche, and Volkswagen models, including the 718 Boxster, 718 Cayman, A3, A8 Quattro, Golf R, GTI, Jetta, Passat, RS7, S3, S6, S7, S8, Tiguan, TT Quattro, and TTS Quattro. The heated sensor design allows for quicker warm-up times, improving emissions control during cold starts. Featuring a 24.21-inch wiring harness and 5 wires with 20 gauge measurement, this sensor ensures reliable electrical connectivity and signal transmission. The radiused polygon male connector and threaded mounting type with an 18.0 mm thread diameter provide a secure and precise fit, reducing the risk of leaks or sensor failure.

Walker Products OE is a product line focused on delivering original equipment quality and fitment. This line is designed to match or exceed OEM standards, ensuring that the oxygen sensor integrates seamlessly with the vehicle’s emission control system. The 250-25112 sensor is part of this line, offering a direct replacement solution for specific vehicle applications.

Common Applications and Issues Addressed

• Helps resolve poor fuel economy caused by incorrect air-fuel mixture readings
• Reduces engine performance issues related to faulty oxygen sensors
• Assists in correcting rough idling and hesitation during acceleration
• Prevents increased emissions and failed emissions tests
• Eliminates check engine light triggers related to oxygen sensor faults

Installation Notes and Tips

• Ensure the vehicle is cool before sensor removal to avoid burns
• Use appropriate oxygen sensor socket for threaded mounting removal and installation
• Verify connector type matches the vehicle’s wiring harness (radiused polygon male connector)
• Do not over-tighten the sensor; follow manufacturer torque specifications
• Inspect wiring harness for damage before installation

Quality Assurance and Warranty

The Walker 250-25112 oxygen sensor is manufactured to meet strict quality standards under the Walker Products OE line. This ensures reliable performance and durability consistent with original equipment parts. While specific warranty details may vary, Walker typically offers coverage against defects in materials and workmanship to provide confidence in the product’s longevity and function.