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OE Quality
60-Day Returns
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WalkerPart #: 250-54133
Walker 250-54133 Oxygen Sensor - Upstream
⚙️ 9 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$224.76Free 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: INFINITI and Nissan, Altima, QX50, and QX55
🔄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 250-54133 Oxygen Sensor - Upstream
| Brand | Walker |
| Part Number | 250-54133 |
| Position | OE Base Sensor, Upstream |
| Heated | Yes |
| Sensor Type | Wide-band |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Connector Shape | Rectangle |
| Terminal Quantity | 4 |
| Connector Gender | Female |
| Terminal Gender | Male |
| Wrench Size | 22 |
| Thread Size | M18 - 1.5 |
This part fits 9 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2025 | INFINITI | QX50 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2025 | INFINITI | QX55 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | INFINITI | QX50 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | INFINITI | QX55 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2024 | Nissan | Altima | 2.0L | L4 | Upstream | OE Base Sensor |
| 2023 | INFINITI | QX50 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2023 | INFINITI | QX55 | 2.0L | L4 | Upstream | OE Base Sensor |
| 2023 | Nissan | Altima | 2.0L | L4 | Upstream | OE Base Sensor |
| 2022 | Nissan | Altima | 2.0L | L4 | Upstream | OE Base Sensor |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.