Kooks Headers · New
Kooks 05-10 Mustang GT 3V & 07-10 GT500 4V 12in - 02 Ext Harn -Each
MPN CAS-109014 · Store SKU kshCAS-109014
Supplier stock checked 11/7/2026, 7:24:37 AM UTC. Adding a part does not reserve it.
Request a return within 30 calendar days after delivery. New parts must be unopened and unused.
Shipping & returns ↗This policy does not limit rights required by law.Free standard shipping on eligible parts orders of $100 or more. Oversized and freight items excluded. Fitment, taxes, availability and final totals are confirmed before payment.
Product details
Kooks Headers and Exhaust has been the leader in the High Performance Exhaust Industry for over 50 Years! Since 1962, Kooks takes pride in offering the best Headers and complete exhaust systems for your street, race and off-road applications. We have won hundreds of championships and set countless records in the NHRA, IHRA, NMCA, NMRA, NASCAR, NASA, SCCA and many other racing organizations. Now with three generations of family leadership, we are proud to say that all of our products are handcrafted here in the USA and we are proud to still be independently owned and operated. And don't forget, "Get Kookin with KOOKS!" O2 Extension Harness for 2005-2010 Mustang. Includes 1) 12in. Extension Harness (4-Pin) Round Connector. Extensions are included in Header kits where needed. This part is a replacement for damaged or lost Extensions. O2 Extension Harness for 2005-2010 Mustang. Includes 1) 12" Extension Harness (4-Pin) Round Connector. Extensions are included in Header kits where needed. This part is a replacement for damaged or lost Extensions. O2 Extension Harness for 2005-2010 Mustang. 1) 12in. Extension Harness (4-Pin) O2 Extension Harness for 2005-2010 Mustang. 1) 12" Extension Harness (4-Pin)
Manufacturer fitment & guides
- O2 Extension Harness for 2005-2010 Mustang. Includes 1) 12" Extension Harness (4-Pin) Round Connector. Sold individually. For installation of part # 11312000 or 11312200 on a 2005-2010 4.6L 3V Mustang GT with Automatic Transmission, 2 pcs required. No additional parts required for installation of part# 11312010. Oxygen Sensor Extension harnesses are included in Header kits where needed. This part number should Typically be ordered as a replacement for damaged or lost Oxygen Sensor Extensions.
- Manufacturer-supplied application summary from Turn14; this may not be an exhaustive fitment list.
Part-specific notes
- Not CARB approved. Destination and intended-use restrictions must be checked before sale.
- California Proposition 65: Y
