Kooks 6-Pin Rear O2 Sensor Extension Harness 12in - Ford Mustang Shelby GT500 2011-2014

The Kooks O2 sensor extension harness is a 12 inch 6-pin rear oxygen sensor extension for 2011-2014 Ford Mustang Shelby GT500 with the 5.4L and 5.8L engines, designed to pair with Kooks headers and exhaust systems.

Specifications

This part fits:

Shipping

• In-stock orders placed before 3 PM EST ship the same day — everything else ships within 24 hours.
• Standard, expedited, and overnight options at checkout.
• Oversized items ship by freight and take longer.
• Backordered items ship as soon as stock lands — contact us for lead times.
• International orders: prices do not include VAT, duties, or import fees. Your country charges these at import and they are the buyer’s responsibility.

Returns

• 30-day returns on new, uninstalled items in original packaging with all hardware.
• Standard returns: 8% restocking fee, buyer pays return shipping. Both waived if the item is defective or we made the error.
• Installed or used parts can’t be returned — confirm fitment before you install.
• Special orders and custom items are final sale.
• Email us for return authorization before shipping anything back.

Full details: Shipping Policy · Refund Policy