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What is Upstream vs. Downstream?
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Install Tip: You may be required to reset the vehicle computer after installation of this part.
Item Condition:
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This item is backed by our limited lifetime warranty. In the event this item should fail due to manufacturing defects during intended use, we will replace the part free of charge. This warranty covers the cost of the part only.
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Created on: 2021-01-16
Does your vehicle need an upstream or a downstream oxygen sensor? In this video, the experts at 1A Auto show you how to identify your O2 sensors to find out which part you need.
No Tools Needed
| Year | Make | Model | Description |
|---|---|---|---|
| 1999-2000 | Ford | Contour | Ford Contour V6 2.5L Upstream O2 Oxygen Sensor |
| 2000 | Ford | Contour | Ford Contour L4 2.0L Upstream O2 Oxygen Sensor |
| 1999-2011 | Ford | Crown Victoria | Ford Crown Victoria V8 4.6L Upstream O2 Oxygen Sensor |
| 2000-2004 | Ford | E150 Van | Ford E150 Van V8 5.4L Upstream O2 Oxygen Sensor |
| 2003-2005 | Ford | E150 Van | Ford E150 Van V8 4.6L Upstream O2 Oxygen Sensor |
| 2000-2003 | Ford | E250 Van | Ford E250 Van V8 5.4L Upstream O2 Oxygen Sensor |
| 2000-2003 | Ford | E350 Van | Ford E350 Van V10 6.8L Upstream O2 Oxygen Sensor |
| 2000-2004 | Ford | E350 Van | Ford E350 Van V8 5.4L Upstream O2 Oxygen Sensor |
| 2000-2004 | Ford | E350 Van Super Duty | Ford E350 Van Super Duty V8 5.4L Upstream O2 Oxygen Sensor |
| 2000-2004 | Ford | E350 Van Super Duty | Ford E350 Van Super Duty V10 6.8L Upstream O2 Oxygen Sensor |
| 2001-2004 | Ford | Escape | Ford Escape L4 2.0L Upstream O2 Oxygen Sensor |
| 2001-2006 | Ford | Escape | Ford Escape V6 3.0L Front Bank Upstream O2 Oxygen Sensor |
| 2001-2003 | Ford | Escort | Ford Escort L4 2.0L Upstream O2 Oxygen Sensor |
| 2000-2005 | Ford | Excursion | Ford Excursion V10 6.8L Upstream O2 Oxygen Sensor |
| 2000-2005 | Ford | Excursion | Ford Excursion V8 5.4L Upstream O2 Oxygen Sensor |
| 2000-2002 | Ford | F150 Truck | Ford F150 Truck V8 5.4L CNG Upstream O2 Oxygen Sensor |
| 2000-2005 | Ford | F250 Super Duty Truck | Ford F250 Super Duty Truck V10 6.8L Upstream O2 Oxygen Sensor |
| 2000-2005 | Ford | F250 Super Duty Truck | Ford F250 Super Duty Truck V8 5.4L Upstream O2 Oxygen Sensor |
| 2000-2005 | Ford | F350 Super Duty Truck | Ford F350 Super Duty Truck V8 5.4L Upstream O2 Oxygen Sensor |
| 2000-2005 | Ford | F350 Super Duty Truck | Ford F350 Super Duty Truck V10 6.8L Upstream O2 Oxygen Sensor |
| 2005-2007 | Ford | Five Hundred | Ford Five Hundred V6 3.0L Front Bank Upstream O2 Oxygen Sensor |
| 2000-2004 | Ford | Focus | Ford Focus L4 2.0L Upstream O2 Oxygen Sensor |
| 2005-2007 | Ford | Freestyle | Ford Freestyle V6 3.0L Front Bank Upstream O2 Oxygen Sensor |
| 2005-2006 | Ford | GT | Ford GT V8 5.4L Upstream O2 Oxygen Sensor |
| 1999 | Ford | Taurus | Ford Taurus V6 3.0L with California Emissions Upstream O2 Oxygen Sensor |
| 2000 | Ford | Taurus | Ford Taurus V6 3.0L Upstream O2 Oxygen Sensor |
| 1998-1999 | Lincoln | Town Car | Lincoln Town Car V8 4.6L without Engine Oil Cooler Upstream O2 Oxygen Sensor |
| 2000-2011 | Lincoln | Town Car | Lincoln Town Car V8 4.6L Upstream O2 Oxygen Sensor |
| 2001-2004 | Mazda | Tribute | Mazda Tribute L4 2.0L Upstream O2 Oxygen Sensor |
| 2001-2004 | Mazda | Tribute | Mazda Tribute V6 3.0L Front Bank Upstream O2 Oxygen Sensor |
| 1999 | Mercury | Cougar | Mercury Cougar V6 2.5L (Built After 4/99 Production Date) Upstream O2 Oxygen Sensor |
| 2000-2002 | Mercury | Cougar | Mercury Cougar V6 2.5L Upstream O2 Oxygen Sensor |
| 2000-2002 | Mercury | Cougar | Mercury Cougar L4 2.0L Upstream O2 Oxygen Sensor |
| 1999-2011 | Mercury | Grand Marquis | Mercury Grand Marquis V8 4.6L Upstream O2 Oxygen Sensor |
| 2003-2004 | Mercury | Marauder | Mercury Marauder V8 4.6L Upstream O2 Oxygen Sensor |
| 2005 | Mercury | Mariner | Mercury Mariner V6 3.0L Front Bank Upstream O2 Oxygen Sensor |
| 2006 | Mercury | Mariner | Mercury Mariner V6 3.0L Rear Bank Upstream O2 Oxygen Sensor |
| 2005-2007 | Mercury | Montego | Mercury Montego V6 3.0L Front Bank Upstream O2 Oxygen Sensor |
| 2000 | Mercury | Mystique | Mercury Mystique V6 2.5L Upstream O2 Oxygen Sensor |
| 2000 | Mercury | Mystique | Mercury Mystique L4 2.0L Upstream O2 Oxygen Sensor |
| 1999 | Mercury | Sable | Mercury Sable V6 3.0L with California Emissions Upstream O2 Oxygen Sensor |
| 2000 | Mercury | Sable | Mercury Sable V6 3.0L Upstream O2 Oxygen Sensor |
| Brand Label | Part Number |
|---|---|
| DIY Solutions | EMS00311 |
| Walker Products | 250-24302 |
This item may be interchangeable with parts from other brands with the above part numbers. This information is provided only for reference and does not guarantee that the item you are purchasing is identical to parts with part numbers from the brands listed above. To confirm that this item fits your vehicle, use the above "Check Vehicle Fit" option.
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