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SKU: CAS-109203 | UPC: 842422122706
Kooks CAS-109203 12-Inch 6-Pin O2 Sensor Extension Harness for 2007–2014 Ford Mustang Shelby GT500
The Kooks 12-inch 6-pin O2 sensor extension harness solves wiring reach issues when installing long-tube headers on 2007–2014 Shelby GT500 models with the 5.4L or 5.8L supercharged V8, providing a plug-and-play solution that repositions the upstream oxygen sensors for accurate air-fuel monitoring and ECU calibration without triggering check engine lights or lean/rich codes.
Built from high-temperature shielded wiring with OEM-style weatherproof 6-pin connectors rated over 1,200°F, this harness maintains perfect signal integrity under extreme exhaust heat and vibration from high-RPM or track use. The exact 12-inch length eliminates excess slack while ensuring clean routing along the factory harness path.
For GT500 owners upgrading to Kooks long-tube headers, the CAS-109203 harness is the essential wiring solution for seamless installation and flawless engine management.
Key Features
- 12-inch length for precise O2 sensor relocation
- 6-pin OEM-style weatherproof connectors
- High-temp shielded wiring rated over 1,200°F
- Plug-and-play – no cutting or splicing
- Prevents CEL from O2 sensor relocation
- Direct fit for Kooks GT500 header kits
Product Notes
- Front upstream sensor extension only
- One required per bank (order two for full vehicle)
- Fits 2007–2014 Shelby GT500 with 5.4L/5.8L supercharged
California Proposition 65: Contains chemicals known to the State of California to cause cancer or reproductive harm.
Warranty: Limited lifetime against manufacturing defects to original purchaser.
Installation Notes
- Unplug factory O2 sensor connector
- Route extension along factory harness path
- Plug into original harness and relocated sensor
- Secure with zip ties – avoid exhaust contact
This Part Fits
| Year | Make | Model | Engine |
|---|---|---|---|
| 2007–2014 | Ford | Mustang | Shelby GT500 - 5.4L / 5.8L Supercharged |
Note: Front upstream O2 extension for Kooks long-tube headers. Order two for both banks.
What's Included in the Purchase
- (1) 12-Inch 6-Pin O2 Sensor Extension Harness
- Part Number: Kooks CAS-109203
Why Choose Kooks?
- Over 60 years of championship-winning exhaust engineering
- Precision wiring components tested in 1,000+ HP builds
- Limited lifetime warranty and expert installation support
Frequently Asked Questions
-
Q: One or two needed?
A: One per bank – order two for complete vehicle -
Q: Front or rear?
A: Front upstream only -
Q: Fits 2013 GT500 5.8L?
A: Yes, same 6-pin connector as all 07-14 GT500
Shipping & Handling
- Method: UPS or Fed Ex Ground.
- Availability: Typically ships same day or next if in stock.
- Packaging: Anti-static bag in protective box.
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