The Kooks 12-inch O2 sensor extension harness provides the necessary length and compatibility for relocating factory oxygen sensors on select GM platforms. Designed for use with 2004–2006 Pontiac GTO and 2004–2007 Cadillac CTS-V models, this harness features a 4-pin plug configuration and is built to maintain proper sensor function during custom exhaust installations. It ensures uninterrupted sensor communication with the ECU when header or mid-pipe upgrades create distance from the original harness location.
Constructed with durable materials and factory-style connectors, the extension eliminates the need for cutting or splicing wires. The plug-and-play design supports emission system performance while preventing check engine lights caused by disconnection or improper routing.
Key Features:
Designed for use with long tube headers or custom exhaust setups
Compatible with Pontiac GTO (2004–2006) and Cadillac CTS-V (2004–2007)
12-inch overall length with factory-style 4-pin male and female connectors
Maintains OEM O2 sensor communication and emission system functionality
High-quality wiring with protective loom for long-term durability
Plug-and-play design—no cutting or soldering required
Ideal for repositioned O2 sensor locations during aftermarket installations
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