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Replace the O2 extension your exhaust needs
Get your sensor wiring connected again with the correct Kooks replacement extension for 2005-2010 Ford Mustang. This is a practical replacement when an existing oxygen-sensor extension has been damaged or lost, with the harness lengths and connector details listed below.
SKU: CAS-109014
The correct harness for the job
One 12-inch harness; round 4-pin connector. Match the plug type, sensor position and extension length to the part you are replacing. Front and rear extensions do different jobs, so use the listed contents rather than choosing by vehicle name alone.
Replacement parts for your Kooks exhaust
Kooks header kits include the required oxygen-sensor extensions where needed. This separate listing lets you replace the extension you need when servicing your exhaust.
Automatic Mustang GT installations
On a 2005-2010 4.6L 3V Mustang GT automatic, two CAS-109014 extensions are required with headers 11312000 or 11312200. No additional extensions are required with 11312010. Match that header part number before adding separate harnesses.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2005-2010 | Ford Mustang Base | 4.0L V6 | CAS-109014 | Replacement for the matched existing extension; match connector and sensor position |
| 2005-2010 | Ford Mustang GT | 4.6L V8 | CAS-109014 | Replacement for the matched existing extension; match connector and sensor position; automatic: two with 11312000 / 11312200; no additional extensions with 11312010 |
| 2007-2010 | Ford Mustang Shelby GT500 | 5.4L V8 | CAS-109014 | Replacement for the matched existing extension; match connector and sensor position |
| 2007-2008 | Ford Mustang Shelby GT | 4.6L V8 | CAS-109014 | Replacement for the matched existing extension; match connector and sensor position; automatic: two with 11312000 / 11312200; no additional extensions with 11312010 |
| 2008-2009 | Ford Mustang Bullitt | 4.6L V8 | CAS-109014 | Replacement for the matched existing extension; match connector and sensor position |
| 2008-2009 | Ford Mustang Shelby GT500KR | 5.4L V8 | CAS-109014 | Replacement for the matched existing extension; match connector and sensor position |
Ordering and delivery
Estimated lead time is 4-6 weeks. Delivery may be faster depending on stock levels. Shipping is charged separately.
Technical specifications
| Specification | Details |
|---|---|
| SKU | CAS-109014 |
| Application | 2005-2010 Ford Mustang |
| Included harnesses | One 12-inch harness; round 4-pin connector |
| Purchase purpose | Replacement for damaged or lost extensions; Kooks header kits include required extensions where needed |
| Automatic Mustang GT fitting | Two required with 11312000 / 11312200 on 2005-2010 4.6L 3V GT automatic; no additional extensions with 11312010 |
Frequently asked questions
What is supplied?
One 12-inch harness; round 4-pin connector.
Do I need this as an extra with a new header kit?
Kooks includes the required extensions in its header kits where needed. Use this listing for a damaged or lost extension or the specific automatic Mustang GT combinations described above.
Will this change how my O2 sensor works?
It extends the electrical connection. Match the existing sensor and harness connector; the extension is not a replacement oxygen sensor.
