Walker 250-25028 Oxygen Sensor - Upstream, Upstream Left or Upstream Right

Overview of Walker 250-25028 Oxygen Sensor for Audi Models

The Walker 250-25028 oxygen sensor is designed specifically for select Audi vehicles, including the A6 Quattro, A8 Quattro, R8, and RS4. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.

• Heated oxygen sensor with 5-wire configuration
• Specific fit for Audi A6 Quattro, A8 Quattro, R8, and RS4
• 64.49 inches wiring harness length for flexible installation
• Threaded mounting type with 18.0 mm thread diameter
• Radiused polygon male connector for secure connection
• Wire gauge measurement of 20 for reliable signal transmission
• Overall length of 68.03 inches for proper fitment

Detailed Features and Specifications

This Walker Products OE oxygen sensor (part number 250-25028) features a heated sensor type that allows for faster warm-up times and improved emissions monitoring. The sensor includes a 5-wire design, which supports accurate data transmission to the vehicle’s engine control unit. The wiring harness length of 64.49 inches provides ample reach for installation in the exhaust system of Audi A6 Quattro, A8 Quattro, R8, and RS4 models. The sensor’s threaded mounting type with an 18.0 mm thread diameter ensures a secure and precise fit. Additionally, the radiused polygon male connector is designed to match factory specifications, facilitating a straightforward replacement process.

Walker Products OE Brand Line Information

The Walker Products OE line focuses on delivering emission control components that meet or exceed original equipment specifications. This oxygen sensor is part of that line, ensuring compatibility and performance consistent with factory-installed parts. Using a Walker Products OE sensor helps maintain the integrity of the vehicle’s emissions system and supports compliance with environmental regulations.

Common Applications and Issues Addressed

• Restores accurate oxygen sensing for proper air-fuel mixture control
• Resolves check engine light triggers related to oxygen sensor faults
• Improves fuel efficiency by providing precise exhaust gas data
• Reduces harmful emissions by ensuring proper catalytic converter function
• Eliminates rough idling or engine hesitation caused by faulty sensors

Installation Notes and Tips

When installing the Walker 250-25028 oxygen sensor, ensure the vehicle is cool to avoid burns. Use appropriate tools to remove the old sensor and avoid damaging the wiring harness. Verify the connector shape and gender match the factory harness before installation. Thread the sensor carefully to prevent cross-threading and tighten to manufacturer torque specifications. After installation, clear any diagnostic trouble codes and perform a test drive to confirm proper operation.

Quality Assurance and Warranty

Walker Products OE oxygen sensors are manufactured to meet strict quality standards and are tested for durability and performance. This part number 250-25028 is backed by Walker’s quality assurance protocols, providing confidence in its reliability and fitment for Audi A6 Quattro, A8 Quattro, R8, and RS4 models.