This extension adds 18 inches to your O2 sensor cable to allow you to install an aftermarket X-pipe. 2004 GT's must pull harness down from behind the block to make work.

Pypes Performance Exhaust systems and accessories are fabricated using stainless steel materials that will provide their owners with long term service and satisfaction and Pypes products are backed by our limited lifetime warranty!
Features:

• 96-04 Mustang 18 Inch O2 Extension Pack
• Allows Installation Of Aftermarket X-Pipe
• Adds 18 inches To Your O2 Sensor Cable
• Size: 18 Inch
• Sold As: Each
• Warranty: Limited Lifetime