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Walker 350-35020 Oxygen Sensor - Upstream
| Brand | Walker 350-35020 |
|---|---|
| Position | Upstream |
| Connector Gender | Male |
| Connector Shape | Radiused Polygon |
| Mounting Type | Threaded |
| Overall Length | 37.52 |
| Sensor Type | Heated |
| Thread Diameter | 18.0 |
| Universal Or Specific Fit | Specific |
| Wire Gauge Measurement | 20 |
| Wire Quantity | 5 |
| Wiring Harness Length | 33.98 |
| Product line | Walker Products Aftermarket |
| Fits | Audi · 2 vehicles |
OE replacement. Engineered as an original-equipment-style oxygen sensor for specific applications.
Heated sensor. Provides faster feedback to the ECU for more responsive engine management.
Threaded mount. Installs with a threaded design for a secure, direct-fit connection.
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Walker 350-35020 Oxygen Sensor for Audi S6
Walker Products 350-35020 is a heated oxygen sensor built as a specific-fit OE-style replacement for select 2007 Audi S6 applications. It is engineered to deliver the diagnostic feedback the ECU expects, helping maintain proper fuel control and emissions monitoring on the upstream position.
Key Features
- Specific-fit heated oxygen sensor for the upstream location
- 5-wire design with a 20-gauge harness
- Radiused polygon male connector for application-specific fitment
- 18.0 mm threaded mounting type
- Wiring harness length: 33.98 in.; overall length: 37.52 in.
- Walker Products Aftermarket line for engine management and oxygen/air-fuel sensor replacement
Product Details
The Walker Products Aftermarket line focuses on replacement engine management sensors built for defined vehicle applications. Part number 350-35020 is made for the upstream oxygen sensor position on the 2007 Audi S6, including the listed cylinder-bank applications. As an OE-replacement sensor, it is designed to provide the ECU with the feedback needed for air-fuel control and emissions system operation. Walker 350-35020 is a direct-fit option for drivers servicing a 2007 Audi S6 upstream oxygen sensor fault.
This part cross-references Bosch 17098 for the same application.
Common Symptoms This Sensor May Address
- Check engine light or malfunction indicator light related to oxygen sensor performance
- Poor engine running quality caused by incorrect air-fuel feedback
- Increased fuel consumption from inaccurate exhaust gas readings
- Higher exhaust emissions from a failing upstream sensor
- Stored ECU fault codes tied to the sensor or related wiring
Installation Notes
Confirm the upstream location and verify connector shape, thread diameter, and harness length before installation. Inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion, since physical damage can shorten service life. Because this is a specific-fit threaded sensor, proper routing and secure connector engagement are important for reliable operation on the Audi S6.
Quality Assurance
Walker Products has manufactured engine management and oxygen/air-fuel sensors as OE-replacement parts for many vehicles worldwide since 1946. The company is ISO 9001/TS 16949 certified, and this part is built to match the application-specific fitment and ECU feedback requirements for the listed 2007 Audi S6 vehicles.
| Year | Make | Model | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|
| 2007 | Audi | S6 | 5.2L | V10 | GAS | Upstream | Cyl 9,10; Cil 9,10; Upstream; Walker Products Aftermarket |
| 2007 | Audi | S6 | 5.2L | V10 | GAS | Upstream | Cyl 9,10; Upstream; Walker Products Aftermarket |
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