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WalkerPart #: 350-34578
Walker 350-34578 Oxygen Sensor - Upstream
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$70.70Free 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
🔄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 350-34578 Oxygen Sensor - Upstream
| Brand | Walker |
| Part Number | 350-34578 |
| Heated | Yes |
| Sensor Type | Narrow-band |
| Terminal Type | Spade |
| Universal Or Specific Fit | Specific |
| Wire Quantity | 4 |
| Grade Type | Standard replacement |
| Connector Shape | Oblong |
| Terminal Quantity | 4 |
| Connector Gender | Female |
| Terminal Gender | Male |
| Thread Size | M18 - 1.5 |
| Overall Length | 600 |
| Mounting Type | Threaded |
This part fits 0 vehicles. Search below:
| Year | Make | Model | Position | Notes |
|---|
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.