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WalkerPart #: 250-25193
Walker 250-25193 Oxygen Sensor - Upstream
⚙️ 22 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$130.83Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship
Most orders ship same-day if ordered before 1pm CST.
✅OE Direct Replacement — Bolt-on fit, no modifications needed
📦OE Base Sensor, Upstream
🚗Fitment: Audi, A4 allroad, A4 Quattro, A5 Quattro, A5 Sportback, A6 Quattro, Q5, Q5 Sportback, and Q7
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST
Not what you need? Click here for all Oxygen Sensor options
Walker 250-25193 Oxygen Sensor - Upstream
| Brand | Walker |
| Part Number | 250-25193 |
| Position | OE Base Sensor, Upstream |
| Heated | Yes |
| Sensor Type | Wide-band |
| Terminal Type | Spade |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 5 |
| Connector Shape | Oblong |
| Terminal Quantity | 6 |
| Connector Gender | Female |
| Terminal Gender | Male |
| Wrench Size | 22 |
| Thread Size | M18 - 1.5 |
This part fits 22 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2026 | Audi | Q7 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2025 | Audi | A4 allroad | 2.0L | L4 | Upstream | OE Base Sensor |
| 2025 | Audi | A4 Quattro | 2.0L | L4 | Upstream | OE Base Sensor |
| 2025 | Audi | A5 Sportback | 2.0L | L4 | Upstream | OE Base Sensor |
| 2025 | Audi | A6 Quattro | 2.0L | L4 | Upstream | OE Base Sensor |
| 2025 | Audi | Q5 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2025 | Audi | Q5 Sportback | 2.0L | L4 | Upstream | OE Base Sensor |
| 2025 | Audi | Q7 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | Audi | A4 allroad | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | Audi | A4 Quattro | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | Audi | A5 Quattro | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | Audi | A5 Sportback | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | Audi | A6 Quattro | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | Audi | Q5 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | Audi | Q5 Sportback | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | Audi | Q7 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2023 | Audi | A6 Quattro | 2.0L | L4 | Upstream | OE Base Sensor |
| 2023 | Audi | Q7 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2022 | Audi | A6 Quattro | 2.0L | L4 | Upstream | OE Base Sensor |
| 2021 | Audi | A6 Quattro | 2.0L | L4 | Upstream | OE Base Sensor |
| 2021 | Audi | Q5 | 2.0L | L4 | Upstream | 6-Pin Connector; OE Base Sensor |
| 2021 | Audi | Q5 Sportback | 2.0L | L4 | Upstream | 6-Pin Connector; OE Base Sensor |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.