Walker 250-25052 Oxygen Sensor - Upstream or Upstream Left

Overview of Walker 250-25052 Oxygen Sensor

The Walker 250-25052 oxygen sensor is designed specifically for select Audi and Volkswagen models, including the A8 Quattro, Beetle, and Touareg. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by providing precise air-fuel mixture data.

• Heated oxygen sensor type for faster response times
• Specific fit for Audi A8 Quattro, Volkswagen Beetle, and Touareg
• Wiring harness length of 65.47 inches for flexible installation
• 20 gauge wire with 5 wires for reliable signal transmission
• Radiused polygon male connector for secure connection
• Threaded mounting type with 18.0 mm thread diameter
• Overall length of 69.02 inches for proper fitment

Detailed Product Description

The Walker 250-25052 oxygen sensor is a heated sensor designed to provide accurate oxygen level readings to the engine control unit (ECU). Its 5-wire configuration and 20 gauge wiring ensure consistent electrical signals, while the 65.47-inch wiring harness length allows for convenient routing in the engine bay. The sensor features a radiused polygon male connector that matches the original equipment specifications, ensuring a secure and reliable connection. The threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system. This sensor is engineered for specific fitment on Audi A8 Quattro, Volkswagen Beetle, and Touareg models, ensuring compatibility and performance.

Walker Products OE Brand Line

This oxygen sensor is part of the Walker Products OE line, which focuses on delivering original equipment quality and fitment. Walker Products OE sensors are designed to meet or exceed OEM specifications, providing reliable emissions control and durability. The 250-25052 sensor maintains the standards expected from Walker's OE line, ensuring it integrates seamlessly with the vehicle's existing systems.

Common Applications and Issues Addressed

• Restores accurate air-fuel ratio readings for improved fuel efficiency
• Resolves check engine light triggers related to oxygen sensor faults
• Helps reduce harmful emissions by maintaining proper combustion
• Prevents rough idling and engine hesitation caused by faulty sensors
• Supports optimal catalytic converter performance

Installation Notes and Tips

When installing the Walker 250-25052 oxygen sensor, ensure the vehicle is cool to avoid burns. Use the correct 18.0 mm socket for removal and installation to prevent damage to the sensor or threads. Verify the radiused polygon male connector aligns properly with the vehicle harness before securing. Route the 65.47-inch wiring harness away from hot exhaust components and moving parts to prevent damage. Follow vehicle-specific torque specifications to ensure proper mounting.

Quality Assurance and Warranty

Walker oxygen sensors, including the 250-25052, are manufactured to meet strict quality standards for durability and performance. This part undergoes rigorous testing to ensure reliable operation under various driving conditions. Please refer to Walker's warranty policy for specific coverage details.