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Replace the O2 extension your exhaust needs
Get your sensor wiring connected again with the correct Kooks replacement extension for Gen I Cadillac CTS-V, Pontiac G8 and 2004-2006 Pontiac GTO. 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-109004
The correct harness for the job
One 12-inch front harness; 4-pin. 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.
Vehicle fitment
| Years | Vehicle / trim | Engine | Applicable SKU | Fitting conditions |
|---|---|---|---|---|
| 2004-2005 | Cadillac CTS V | 5.7L V8 | CAS-109004 | Replacement for the matched existing extension; match connector and sensor position |
| 2006-2007 | Cadillac CTS V | 6.0L V8 | CAS-109004 | Replacement for the matched existing extension; match connector and sensor position |
| 2004 | Pontiac GTO Base | 5.7L V8 | CAS-109004 | Replacement for the matched existing extension; match connector and sensor position |
| 2005-2006 | Pontiac GTO Base | 6.0L V8 | CAS-109004 | Replacement for the matched existing extension; match connector and sensor position |
| 2008-2009 | Pontiac G8 GT | 6.0L V8 | CAS-109004 | Replacement for the matched existing extension; match connector and sensor position |
| 2009 | Pontiac G8 GXP | 6.2L V8 | CAS-109004 | 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-109004 |
| Application | Gen I Cadillac CTS-V, Pontiac G8 and 2004-2006 Pontiac GTO |
| Included harnesses | One 12-inch front harness; 4-pin |
| Purchase purpose | Replacement for damaged or lost extensions; Kooks header kits include required extensions where needed |
Frequently asked questions
What is supplied?
One 12-inch front harness; 4-pin.
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.
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.
