/live/media/O2/O2_35035135_Fro.jpg)
OE Quality
60-Day Returns
Will it fit your vehicle?
Confirm before you buy. Free return shipping if it doesn't fit.
Walker
OE ReplacementWalker 350-35135 Oxygen Sensor - Upstream, Upstream Rear or Upstream Right
| Brand | Walker 350-35135 |
|---|---|
| Position | Upstream, Upstream Right, and Upstream Rear |
| Product line | OE Replacement |
| Fits | Audi · 124 vehicles |
OE replacement. Engineered as an original-equipment-style sensor replacement.
Provides the diagnostic feedback the ECU requires.
Walker Products. Engine management sensor expertise since 1946.
$118.05Free shipping
In stock · usually ships same day before 1pm CST
Vehicle: not selected
Will it fit your vehicle?
Free return shipping if it doesn't fit.
Step 1 — Confirm fitment
Free return shipping if it doesn't fit when you check fitment here first.
Fitment not checked
Select your vehicle to confirm fitment
Verify this part fits before purchasing β free returns if it doesn't
Step 2 — Quantity
$118.05
Free shipping
Free shipping to the continental U.S.
Free returns within 60 days if it doesn't fit when fitment is verified.
Not what you need? See all Oxygen Sensor options
Walker 350-35135 Oxygen Sensor for Audi
Walker Products 350-35135 is an OE replacement oxygen sensor engineered for specific upstream applications on select Audi models. It is built to deliver the diagnostic feedback the ECU expects, helping maintain proper air-fuel control and emissions performance.
Key Features
- OE replacement oxygen sensor for upstream positions
- Engineered for application-specific fitment and ECU feedback
- Supports accurate exhaust monitoring on Audi engine management systems
- Walker Products Aftermarket line for engine management and sensor replacement
- Fits 2019-2026 Audi A6 allroad, upstream; 2019-2026 Audi A6 Quattro, upstream; 2019-2026 Audi A7 Sportback, upstream; 2019-2026 Audi A8 Quattro, upstream; 2019-2026 Audi Q7, upstream; 2019-2026 Audi Q8, upstream
Detailed Description
Walker Products 350-35135 is part of the Walker Products Aftermarket engine management sensor line, developed as an OE-style replacement for vehicles worldwide. This oxygen sensor is manufactured for the specified application and position, including upstream and bank-specific locations where listed, so it can provide the feedback required by the ECU on modern Audi platforms. It is a direct-fit solution for drivers servicing Audi A6 allroad, Audi A6 Quattro, Audi A7 Sportback, Audi A8 Quattro, Audi Q7, and Audi Q8 models across the listed years.
This part cross-references Bosch 17098 for the same application.
What It Helps Address
- Check engine light related to oxygen sensor faults
- Poor engine performance caused by incorrect air-fuel readings
- Increased fuel consumption from inaccurate exhaust feedback
- Elevated exhaust emissions from a failing upstream sensor
- Stored ECU fault codes tied to the affected sensor circuit
Installation Notes and Tips
Before replacement, inspect the sensor wiring harness and connector for heat damage, abrasion, or corrosion. Confirm the exact position on the vehicle, since fitment includes upstream, upstream right, and upstream rear applications depending on model and year. Verify the ECU fault code and sensor location against the vehicle service information before installation.
Quality Assurance
Walker Products has been manufacturing engine management and fuel system components since 1946 and operates as an Automotive ISO 9001/TS 16949 certified company. The 350-35135 is built to meet the application-specific requirements of the listed Audi fitments.
This part fits 124 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2024 | Audi | A6 allroad | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2024 | Audi | A6 Quattro | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2024 | Audi | A7 Sportback | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2024 | Audi | A8 Quattro | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2024 | Audi | Q7 | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2024 | Audi | Q8 | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2024 | Audi | RS5 | — | 2.9L | V6 | — | Upstream Rear | OE Replacement |
| 2024 | Audi | RS5 Sportback | — | 2.9L | V6 | — | Upstream Rear | OE Replacement |
| 2024 | Audi | S4 | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2024 | Audi | S5 | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2024 | Audi | S5 Sportback | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2024 | Audi | S6 | — | 2.9L | V6 | — | Upstream Rear | OE Replacement |
| 2024 | Audi | S7 Sportback | — | 2.9L | V6 | — | Upstream Rear | OE Replacement |
| 2024 | Audi | SQ5 | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2024 | Audi | SQ5 Sportback | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2023 | Audi | A6 allroad | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2023 | Audi | A6 Quattro | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2023 | Audi | A7 Sportback | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2023 | Audi | A8 Quattro | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2023 | Audi | Q7 | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2023 | Audi | Q8 | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2023 | Audi | RS5 | — | 2.9L | V6 | — | Upstream Right | B1S1; OE Replacement |
| 2023 | Audi | RS5 Sportback | — | 2.9L | V6 | — | Upstream Right | B1S1; OE Replacement |
| 2023 | Audi | S4 | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2023 | Audi | S5 | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2023 | Audi | S5 Sportback | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2023 | Audi | S6 | — | 2.9L | V6 | — | Upstream Right | B1S1; OE Replacement |
| 2023 | Audi | S7 Sportback | — | 2.9L | V6 | — | Upstream Right | B1S1; OE Replacement |
| 2023 | Audi | SQ5 | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2023 | Audi | SQ5 Sportback | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | A6 allroad | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | A6 Quattro | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | A7 Sportback | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | A8 Quattro | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | Q7 | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | Q8 | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | RS5 | — | 2.9L | V6 | — | Upstream Right | B1S1; OE Replacement |
| 2022 | Audi | RS5 Sportback | — | 2.9L | V6 | — | Upstream Right | B1S1; OE Replacement |
| 2022 | Audi | S4 | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | S5 | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | S5 Sportback | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | S6 | — | 2.9L | V6 | — | Upstream Right | B1S1; OE Replacement |
| 2022 | Audi | S7 Sportback | — | 2.9L | V6 | — | Upstream Right | B1S1; OE Replacement |
| 2022 | Audi | SQ5 | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2022 | Audi | SQ5 Sportback | — | 3.0L | V6 | — | Upstream | B2S1; OE Replacement |
| 2021 | Audi | A6 allroad | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | A6 allroad | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2021 | Audi | A6 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | A6 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2021 | Audi | A7 Sportback | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | A7 Sportback | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2021 | Audi | A8 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | A8 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2021 | Audi | Q7 | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | Q7 | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2021 | Audi | Q8 | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | Q8 | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2021 | Audi | RS5 | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; B1S1; Del 09/27/2018; Upstream; Right; Walker Products Aftermarket |
| 2021 | Audi | RS5 | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; Del 09/27/2018; Upstream; Right; B1S1; Walker Products Aftermarket |
| 2021 | Audi | RS5 | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; B1S1; Upstream; Right; Walker Products Aftermarket |
| 2021 | Audi | RS5 Sportback | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; B1S1; Del 09/27/2018; Upstream; Right; Walker Products Aftermarket |
| 2021 | Audi | RS5 Sportback | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; Del 09/27/2018; Upstream; Right; B1S1; Walker Products Aftermarket |
| 2021 | Audi | RS5 Sportback | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; B1S1; Upstream; Right; Walker Products Aftermarket |
| 2021 | Audi | S4 | — | 3.0L | V6 | GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | S4 | — | 3.0L | V6 | GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2021 | Audi | S5 | — | 3.0L | V6 | GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | S5 | — | 3.0L | V6 | GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2021 | Audi | S5 Sportback | — | 3.0L | V6 | GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | S5 Sportback | — | 3.0L | V6 | GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2021 | Audi | S6 | — | 2.9L | V6 | ELECTRIC/GAS | Upstream Right | Compatible with upstream right oxygen sensor in the B1S1 position.; Walker Products Aftermarket |
| 2021 | Audi | S6 | — | 2.9L | V6 | ELECTRIC/GAS | Upstream Right | Upstream oxygen sensor for right bank position 1; Walker Products Aftermarket |
| 2021 | Audi | S7 Sportback | — | 2.9L | V6 | ELECTRIC/GAS | Upstream Right | Compatible with upstream right oxygen sensor in the B1S1 position.; Walker Products Aftermarket |
| 2021 | Audi | S7 Sportback | — | 2.9L | V6 | ELECTRIC/GAS | Upstream Right | Upstream oxygen sensor for right bank position 1; Walker Products Aftermarket |
| 2021 | Audi | SQ5 | — | 3.0L | V6 | GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | SQ5 | — | 3.0L | V6 | GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2021 | Audi | SQ5 Sportback | — | 3.0L | V6 | GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2021 | Audi | SQ5 Sportback | — | 3.0L | V6 | GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2020 | Audi | A6 allroad | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2020 | Audi | A6 allroad | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2020 | Audi | A6 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2020 | Audi | A6 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2020 | Audi | A7 Sportback | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2020 | Audi | A8 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2020 | Audi | A8 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2020 | Audi | Q7 | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2020 | Audi | Q7 | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2020 | Audi | Q8 | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2020 | Audi | Q8 | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2020 | Audi | S4 | — | 3.0L | V6 | GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2020 | Audi | S4 | — | 3.0L | V6 | GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2020 | Audi | S5 | — | 3.0L | V6 | GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2020 | Audi | S5 | — | 3.0L | V6 | GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2020 | Audi | S5 Sportback | — | 3.0L | V6 | GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2020 | Audi | S5 Sportback | — | 3.0L | V6 | GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2020 | Audi | S6 | — | 2.9L | V6 | ELECTRIC/GAS | Upstream Right | Compatible with upstream right oxygen sensor in the B1S1 position.; Walker Products Aftermarket |
| 2020 | Audi | S6 | — | 2.9L | V6 | ELECTRIC/GAS | Upstream Right | Upstream oxygen sensor for right bank position 1; Walker Products Aftermarket |
| 2020 | Audi | S7 | Base | 2.9L | V6 | ELECTRIC/GAS | Upstream Right | Compatible with upstream right oxygen sensor in the B1S1 position.; Walker Products Aftermarket |
| 2020 | Audi | S7 | Base | 2.9L | V6 | ELECTRIC/GAS | Upstream Right | Upstream oxygen sensor for right bank position 1; Walker Products Aftermarket |
| 2020 | Audi | S7 Sportback | — | 2.9L | V6 | — | Upstream Right | B1S1; OE Replacement |
| 2020 | Audi | SQ5 | — | 3.0L | V6 | GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2020 | Audi | SQ5 | — | 3.0L | V6 | GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2019 | Audi | A6 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2019 | Audi | A6 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2019 | Audi | A7 Sportback | — | 3.0L | V6 | — | Upstream | OE Replacement |
| 2019 | Audi | A8 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | From 09/27/2018; B2S1; Del 09/27/2018; Upstream; Walker Products Aftermarket |
| 2019 | Audi | A8 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | From 09/27/2018; Del 09/27/2018; Upstream; B2S1; Walker Products Aftermarket |
| 2019 | Audi | A8 Quattro | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | From 09/27/2018; B2S1; Upstream; Walker Products Aftermarket |
| 2019 | Audi | Q8 | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | B2S1; Upstream; Walker Products Aftermarket |
| 2019 | Audi | Q8 | — | 3.0L | V6 | ELECTRIC/GAS | Upstream | Upstream B2S1 Oxygen Sensor; Walker Products Aftermarket |
| 2019 | Audi | RS5 | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; B1S1; Del 09/27/2018; Upstream; Right; Walker Products Aftermarket |
| 2019 | Audi | RS5 | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; Del 09/27/2018; Upstream; Right; B1S1; Walker Products Aftermarket |
| 2019 | Audi | RS5 | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; B1S1; Upstream; Right; Walker Products Aftermarket |
| 2019 | Audi | RS5 Sportback | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; B1S1; Del 09/27/2018; Upstream; Right; Walker Products Aftermarket |
| 2019 | Audi | RS5 Sportback | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; Del 09/27/2018; Upstream; Right; B1S1; Walker Products Aftermarket |
| 2019 | Audi | RS5 Sportback | — | 2.9L | V6 | GAS | Upstream Right | From 09/27/2018; B1S1; Upstream; Right; Walker Products Aftermarket |
| 2019 | Audi | S4 | — | 3.0L | V6 | GAS | Upstream | From 09/27/2018; B2S1; Del 09/27/2018; Upstream; Walker Products Aftermarket |
| 2019 | Audi | S4 | — | 3.0L | V6 | GAS | Upstream | From 09/27/2018; Del 09/27/2018; Upstream; B2S1; Walker Products Aftermarket |
| 2019 | Audi | S4 | — | 3.0L | V6 | GAS | Upstream | From 09/27/2018; B2S1; Upstream; Walker Products Aftermarket |
| 2019 | Audi | S5 | — | 3.0L | V6 | GAS | Upstream | From 09/27/2018; B2S1; Upstream; Walker Products Aftermarket |
| 2019 | Audi | S5 | — | 3.0L | V6 | GAS | Upstream | From 09/27/2018; Upstream; B2S1; Walker Products Aftermarket |
| 2019 | Audi | S5 Sportback | — | 3.0L | V6 | GAS | Upstream | From 09/27/2018; B2S1; Upstream; Walker Products Aftermarket |
| 2019 | Audi | S5 Sportback | — | 3.0L | V6 | GAS | Upstream | From 09/27/2018; Upstream; B2S1; Walker Products Aftermarket |
| 2019 | Audi | SQ5 | — | 3.0L | V6 | GAS | Upstream | From 09/27/2018; B2S1; Upstream; Walker Products Aftermarket |
| 2019 | Audi | SQ5 | — | 3.0L | V6 | GAS | Upstream | From 09/27/2018; Upstream; B2S1; Walker Products Aftermarket |
| No rows match your filter. | ||||||||