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WalkerPart #: 250-25169
Walker 250-25169 Oxygen Sensor - Upstream, Upstream Rear or Upstream Right
⚙️ 40 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$112.03Free 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 Right, Upstream, and Upstream Rear
🚗Fitment: Ford and Lincoln, Edge, Explorer, F-150, Flex, MKS, MKT, MKX, MKZ, Mustang, Taurus, Transit-150, Transit-250, Transit-350, and Transit-350 HD
🔄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 250-25169 Oxygen Sensor - Upstream, Upstream Rear or Upstream Right
| Brand | Walker |
| Part Number | 250-25169 |
| Position | OE Base Sensor, Upstream Right, Upstream, and Upstream Rear |
| Heated | Yes |
| Sensor Type | Wide-band |
| 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 40 vehicles. Search below:
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 2016 | Lincoln | MKS | 3.7L | V6 | Upstream | To 12/07/2015; OE Base Sensor |
| 2016 | Lincoln | MKZ | 3.7L | V6 | Upstream | OE Base Sensor |
| 2015 | Ford | Explorer | 3.5L | V6 | Upstream Rear | OE Base Sensor |
| 2015 | Ford | Flex | 3.5L | V6 | Upstream Rear | OE Base Sensor |
| 2015 | Ford | Taurus | 3.5L | V6 | Upstream Rear | OE Base Sensor |
| 2015 | Ford | Transit-150 | 3.7L | V6 | Upstream Right | OE Base Sensor |
| 2015 | Ford | Transit-250 | 3.7L | V6 | Upstream Right | OE Base Sensor |
| 2015 | Ford | Transit-350 | 3.7L | V6 | Upstream Right | OE Base Sensor |
| 2015 | Ford | Transit-350 HD | 3.7L | V6 | Upstream Right | OE Base Sensor |
| 2015 | Lincoln | MKS | 3.7L | V6 | Upstream | OE Base Sensor |
| 2015 | Lincoln | MKT | 3.7L | V6 | Upstream Rear | OE Base Sensor |
| 2015 | Lincoln | MKX | 3.7L | V6 | Upstream | OE Base Sensor |
| 2015 | Lincoln | MKZ | 3.7L | V6 | Upstream | OE Base Sensor |
| 2014 | Ford | Edge | 3.7L | V6 | Upstream | OE Base Sensor |
| 2014 | Ford | Explorer | 3.5L | V6 | Upstream Rear | OE Base Sensor |
| 2014 | Ford | F-150 | 3.7L | V6 | Upstream | OE Base Sensor |
| 2014 | Ford | Flex | 3.5L | V6 | Upstream Rear | OE Base Sensor |
| 2014 | Ford | Mustang | 3.7L | V6 | Upstream Right | OE Base Sensor |
| 2014 | Ford | Taurus | 3.5L | V6 | Upstream Rear | OE Base Sensor |
| 2014 | Lincoln | MKS | 3.7L | V6 | Upstream | OE Base Sensor |
| 2014 | Lincoln | MKT | 3.7L | V6 | Upstream Rear | OE Base Sensor |
| 2014 | Lincoln | MKX | 3.7L | V6 | Upstream | OE Base Sensor |
| 2014 | Lincoln | MKZ | 3.7L | V6 | Upstream | OE Base Sensor |
| 2013 | Ford | Edge | 3.7L | V6 | Upstream | OE Base Sensor |
| 2013 | Ford | Explorer | 3.5L | V6 | Upstream Rear | OE Base Sensor |
| 2013 | Ford | F-150 | 3.7L | V6 | Upstream | OE Base Sensor |
| 2013 | Ford | Flex | 3.5L | V6 | Upstream Rear | OE Base Sensor |
| 2013 | Ford | Mustang | 3.7L | V6 | Upstream Right | OE Base Sensor |
| 2013 | Ford | Taurus | 3.5L | V6 | Upstream Rear | OE Base Sensor |
| 2013 | Lincoln | MKS | 3.7L | V6 | Upstream | OE Base Sensor |
| 2013 | Lincoln | MKT | 3.7L | V6 | Upstream Rear | OE Base Sensor |
| 2013 | Lincoln | MKX | 3.7L | V6 | Upstream | OE Base Sensor |
| 2013 | Lincoln | MKZ | 3.7L | V6 | Upstream | OE Base Sensor |
| 2012 | Ford | Edge | 3.7L | V6 | Upstream | OE Base Sensor |
| 2012 | Ford | Explorer | 3.5L | V6 | Upstream Rear | OE Base Sensor |
| 2012 | Ford | F-150 | 3.7L | V6 | Upstream | OE Base Sensor |
| 2012 | Ford | Mustang | 3.7L | V6 | Upstream Right | OE Base Sensor |
| 2012 | Lincoln | MKX | 3.7L | V6 | Upstream | OE Base Sensor |
| 2011 | Ford | F-150 | 3.7L | V6 | Upstream | OE Base Sensor |
| 2011 | Ford | Mustang | 3.7L | V6 | Upstream Right | From 02/03/2011; OE Base Sensor |
* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.