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Walker 250-24393 Oxygen Sensor - Upstream Left or Upstream Right
Overview of Walker Products OE Oxygen Sensor 250-24393
The Walker Products OE Oxygen Sensor 250-24393 is designed specifically for Audi A8 Quattro and S8 models. This heated oxygen sensor ensures accurate emissions control and optimal engine performance by monitoring exhaust gases precisely.
- Heated sensor type for faster response times
- Specific fit for Audi A8 Quattro and S8
- 13.31-inch wiring harness length for proper installation
- 22 gauge wire measurement with 4 wires for reliable signal transmission
- Radiused polygon male connector for secure connection
- Threaded mounting type with 18.0 mm thread diameter
- Overall length of 16.85 inches for correct positioning
Detailed Product Description
This oxygen sensor from Walker Products OE is engineered to meet the exact specifications required by Audi A8 Quattro and S8 vehicles. The heated sensor design allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. Featuring a 13.31-inch wiring harness and 22 gauge wires, it provides a durable and stable electrical connection. The radiused polygon male connector ensures a precise fit, minimizing the risk of disconnection or signal loss. Its threaded mounting type with an 18.0 mm diameter allows for straightforward installation in the exhaust system.
Walker Products OE Brand Line Information
The Walker Products OE line focuses on delivering original equipment quality parts that match or exceed factory specifications. This oxygen sensor is part of that line, ensuring compatibility and performance tailored to specific vehicle models like the Audi A8 Quattro and S8. Using parts from the Walker Products OE line helps maintain the integrity of your vehicle’s emission control system.
Common Applications and Issues Addressed
- Restores accurate oxygen sensing for proper air-fuel mixture
- Helps resolve rough idling and engine hesitation
- Reduces emissions and prevents failed emissions tests
- Eliminates check engine light related to oxygen sensor faults
- Improves fuel economy by providing correct sensor data
Installation Notes and Tips
Ensure the vehicle is cool before installation to avoid burns. Use the 18.0 mm threaded mounting to securely install the sensor in the exhaust manifold or pipe. Verify the radiused polygon male connector matches the vehicle harness to prevent connection issues. Handle wiring carefully to avoid damage to the 22 gauge wires and maintain sensor functionality.
Quality Assurance and Warranty
Walker Products OE oxygen sensors are manufactured to meet strict quality standards for durability and performance. While specific warranty details may vary, these sensors typically come with a limited warranty covering defects in materials and workmanship to provide confidence in your purchase.
| Brand | Walker |
| Part Number | 250-24393 |
| Position | Walker Products OE, Upstream Left |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 16.85 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 22 |
| Wire Quantity | 4 |
| Wiring Harness Length | 13.31 |
This part fits 14 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2003 | Audi | A8 Quattro | 4.2L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products OE |
| 2003 | Audi | A8 Quattro | 4.2L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products OE |
| 2003 | Audi | S8 | 4.2L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products OE |
| 2003 | Audi | S8 | 4.2L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products OE |
| 2002 | Audi | A8 Quattro | 4.2L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products OE |
| 2002 | Audi | A8 Quattro | 4.2L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products OE |
| 2002 | Audi | S8 | 4.2L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products OE |
| 2002 | Audi | S8 | 4.2L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products OE |
| 2001 | Audi | A8 Quattro | 4.2L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products OE |
| 2001 | Audi | A8 Quattro | 4.2L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products OE |
| 2001 | Audi | S8 | 4.2L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products OE |
| 2001 | Audi | S8 | 4.2L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products OE |
| 2000 | Audi | A8 Quattro | 4.2L | V8 | GAS | Upstream Right | Install upstream oxygen sensor on the right side.; Walker Products OE |
| 2000 | Audi | A8 Quattro | 4.2L | V8 | GAS | Upstream Left | Install upstream oxygen sensor on the left side.; Walker Products OE |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
This part directly replaces or is cross-referenced with the following part numbers:
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.