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OE Quality
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WalkerPart #: 250-241278
Walker 250-241278 Oxygen Sensor - Downstream
⚙️ 26 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$114.72Free 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, Downstream
🚗Fitment: Mazda, 3, 6, CX-30, CX-5, and CX-9
🔄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 250-241278 Oxygen Sensor - Downstream
This part fits 26 vehicles. Search below:
| Year | Make | Model | Submodel | Liters | Cylinders | Fuel Type | Position | Notes |
|---|---|---|---|---|---|---|---|---|
| 2025 | Mazda | CX-5 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2024 | Mazda | CX-5 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2023 | Mazda | CX-5 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2022 | Mazda | 3 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2022 | Mazda | CX-30 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2022 | Mazda | CX-5 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2021 | Mazda | 3 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2021 | Mazda | 6 | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE | |
| 2021 | Mazda | CX-30 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2021 | Mazda | CX-5 | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE | |
| 2020 | Mazda | 3 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2020 | Mazda | 6 | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE | |
| 2020 | Mazda | CX-30 | Select | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE |
| 2020 | Mazda | CX-30 | Premium | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE |
| 2020 | Mazda | CX-30 | Preferred | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE |
| 2020 | Mazda | CX-30 | Base | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE |
| 2020 | Mazda | CX-5 | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE | |
| 2019 | Mazda | 3 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2019 | Mazda | 6 | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE | |
| 2019 | Mazda | CX-5 | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE | |
| 2018 | Mazda | 6 | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE | |
| 2018 | Mazda | CX-5 | 2.5L | L4 | GAS | Downstream | Fits downstream bank 1 sensor 2 on specific vehicle models.; Walker Products OE | |
| 2018 | Mazda | CX-9 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2017 | Mazda | CX-5 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2017 | Mazda | CX-9 | 2.5L | L4 | Downstream | OE Base Sensor | ||
| 2016 | Mazda | CX-9 | 2.5L | L4 | Downstream | OE Base Sensor |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.