OE Quality
60-Day Returns

Walker 350-34492 Oxygen Sensor - Downstream
Overview of Walker Oxygen Sensor 350-34492 for Audi A8 Quattro
The Walker 350-34492 oxygen sensor is designed specifically for the Audi A8 Quattro, ensuring precise emission control and optimal engine performance. This heated oxygen sensor features a threaded mounting type and a radiused polygon male connector for secure installation.
- Heated oxygen sensor with 4-wire configuration
- Specific fit for Audi A8 Quattro models
- 64.49 inches wiring harness length for flexible routing
- 22 gauge wire for reliable signal transmission
- Threaded mounting with 18.0 mm thread diameter
- Radiused polygon male connector for secure connection
- Overall length of 68.03 inches for proper fitment
Detailed Product Description
This Walker Products Aftermarket oxygen sensor (part number 350-34492) is engineered to meet the exact specifications required by Audi A8 Quattro vehicles. The sensor’s heated design allows it to reach operating temperature quickly, improving fuel efficiency and reducing emissions. With a 4-wire setup and 22 gauge wiring, it provides accurate oxygen level readings to the engine control unit. The 64.49-inch wiring harness length and 68.03-inch overall length offer sufficient reach for installation without modification. The threaded mounting type with an 18.0 mm diameter ensures a secure and leak-free fit, while the radiused polygon male connector guarantees a reliable electrical connection.
Walker Products Aftermarket Line Information
The Walker Products Aftermarket line focuses on delivering emission control components that meet or exceed OEM standards. This oxygen sensor is part of that line, providing a direct replacement solution for Audi A8 Quattro owners who require precise sensor performance and durability. The product line emphasizes compatibility and quality to support vehicle emission systems effectively.
Common Applications and Issues Addressed
- Replacement for faulty or worn oxygen sensors in Audi A8 Quattro
- Helps resolve engine performance issues related to incorrect air-fuel mixture
- Reduces emissions by providing accurate oxygen level data
- Prevents check engine light triggers caused by sensor failure
- Improves fuel economy by enabling proper engine tuning
Installation Notes and Tips
- Ensure the vehicle is cool before sensor removal to avoid burns
- Use appropriate tools for threaded sensor removal and installation
- Verify connector type matches the vehicle harness before installation
- Do not over-tighten the sensor to prevent thread damage
- Check wiring harness routing to avoid contact with hot or moving parts
Quality Assurance and Warranty
Walker oxygen sensors undergo rigorous testing to meet emission control standards and provide reliable performance. The 350-34492 sensor is manufactured to precise specifications for the Audi A8 Quattro. Warranty coverage details should be confirmed with the product documentation or supplier, as it may vary by region.
| Brand | Walker |
|---|---|
| Part Number | 350-34492 |
| Position | Walker Products Aftermarket, Downstream |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 68.03 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 22 |
| Wire Quantity | 4 |
| Wiring Harness Length | 64.49 |
This part fits 8 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2009 | Audi | A8 Quattro | 6.0L | W12 | GAS | Downstream | Downstream oxygen sensor compatible with cylinders 4-6.; Walker Products Aftermarket |
| 2008 | Audi | A8 Quattro | 6.0L | W12 | GAS | Downstream | Downstream oxygen sensor compatible with cylinders 4-6.; Walker Products Aftermarket |
| 2007 | Audi | A8 Quattro | 6.0L | W12 | GAS | Downstream | Downstream Oxygen Sensor fits Cylinders 4-6, from Chassis/VIN #4E7017 001.; Walker Products Aftermarket |
| 2007 | Audi | A8 Quattro | 6.0L | W12 | GAS | Downstream | Downstream oxygen sensor fits cylinders 4-6, to chassis/VIN #4E7017000.; Walker Products Aftermarket |
| 2007 | Audi | A8 Quattro | 6.0L | W12 | GAS | Downstream | From Chassis/VIN #4E7017 001, fits cylinders 4-6, downstream.; Walker Products Aftermarket |
| 2007 | Audi | A8 Quattro | 6.0L | W12 | GAS | Downstream | Cylinders 4-6 downstream oxygen sensor fits chassis/VIN #4E7017000.; Walker Products Aftermarket |
| 2006 | Audi | A8 Quattro | 6.0L | W12 | GAS | Downstream | Downstream oxygen sensor compatible with cylinders 4-6.; Walker Products Aftermarket |
| 2005 | Audi | A8 Quattro | 6.0L | W12 | GAS | Downstream | Downstream oxygen sensor compatible with cylinders 4-6.; Walker Products Aftermarket |
* 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.