Kooks Headers 12in Oxygen Sensor Extension Harness (4-Pin) for GM LS Applications - CAS-109004

Key Features & Specs:

• Oxygen Sensor Extension Harness
• 12in Length for Front O2 Sensor Applications
• 4-Pin Connector Design
• Allows Proper Sensor Reach After Header Installation
• Maintains Accurate ECU Sensor Communication
• Durable Wiring for High-Temperature Engine Bay Environments
• Replacement for Lost or Damaged Oxygen Sensor Extensions

Fitment:

• 2004-2005 Cadillac CTS-V 5.7L V8
• 2006-2007 Cadillac CTS-V 6.0L V8
• 2004 Pontiac GTO 5.7L V8
• 2005-2006 Pontiac GTO 6.0L V8
• 2008-2009 Pontiac G8 GT 6.0L V8
• 2009 Pontiac G8 GXP 6.2L V8

The Kooks 12-inch Oxygen Sensor Extension Harness is designed for GM LS-based vehicles to provide proper oxygen sensor reach when installing aftermarket headers. This 4-pin front O2 extension harness allows factory oxygen sensor wiring to connect correctly when header installations relocate the sensor position. Built for durability and reliable signal transfer, the harness helps maintain accurate oxygen sensor communication with the vehicle’s engine management system. While extension harnesses are typically included with compatible Kooks header kits, this part is intended as a replacement for damaged or missing oxygen sensor extensions.