2020-2026 Audi O2 / Oxygen Sensor (POST CAT) 4M8906265C
OEM Part #: 4M8-906-265-C (4M8906265C)
Actual photo
The exact part you’ll receive — not a stock photo.
$89.99
Used
Donor2021 Audi SQ8 · 4.0L · 47k miles
✓ Free Same Day Shipping on orders by noon CT
Only 1 in stock — no guaranteed restock
Genuine OEM Used
SKU: 701526
Donor Vehicle: 2021 Audi SQ8 · 4.0L · 47k miles
2 photos
$89.99
30-Day Returns
- Genuine OEM — real photos
- 30-day returns on eligible parts
- eBay Top Rated · 100,000+ positive ratings
- Ships from our own indoor warehouse
A used genuine OEM O2 / Oxygen Sensor (post Cat), part number 4M8906265C, from a donor vehicle. This post-catalytic converter oxygen sensor monitors exhaust gas efficiency after the catalyst. A failing unit can trigger a check engine light or cause incorrect fuel trims. It was originally fitted to Audi RS6, RS7, RS Q8, SQ7, and SQ8 models with the 4.0L V8 MHEV turbocharged engine.
Specifications
| Fits Vehicle Model | RS Q8, RS6, RS7, SQ7, SQ8 |
| Fits Vehicle Make | Audi |
| OEM Part No | 4M8-906-265-C (4M8906265C) |
| Category | Exhaust |
Compatible Vehicles
Fits 33 vehicle configurations across 1 make, 2020-2026.
Check your specific vehicle before ordering.
This list shows year, make, and model. Some years have multiple trims or
engines that use different parts, and individual listings may have
additional fitment notes (e.g. “with sunroof only”). Review
the full variant list below, or
message us with your VIN
and we’ll confirm the match.
View all 33 vehicle configurations — 2 with fitment notes
| Year | Make | Model | Trim | Engine | Note |
|---|---|---|---|---|---|
| 2026 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2026 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2025 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | |
| 2022 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | RS6 | Wagon Wagon | 4.0L V8 Turbo | |
| 2022 | Audi | RS6 | Wagon Wagon | 4.0L V8 Turbo | |
| 2021 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | |
| 2021 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2021 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2021 | Audi | RS6 | Wagon Wagon | 4.0L V8 Turbo | |
| 2023 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | |
| 2026 | Audi | RS6 | Wagon Wagon | 4.0L V8 Turbo | after converter |
| 2025 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2020 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2020 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2025 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2025 | Audi | RS6 | Wagon Wagon | 4.0L V8 Turbo | |
| 2024 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | |
| 2026 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | bench 2 |
| 2025 | Audi | RS6 | Wagon GT Wagon | 4.0L V8 Turbo | |
| 2025 | Audi | RS7 | Hatchback | 4.0L V8 Turbo | |
| 2024 | Audi | SQ8 | SUV | 4.0L V8 Turbo | |
| 2024 | Audi | SQ7 | SUV | 4.0L V8 Turbo | |
| 2024 | Audi | RS6 | Wagon Wagon | 4.0L V8 Turbo | |
| 2021 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2020 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2023 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2024 | Audi | RS Q8 | SUV | 4.0L V8 Turbo | |
| 2022 | Audi | RS Q8 | SUV | 4.0L V8 Turbo |