The pair of FRONT & REAR o2 sensor wire extensions are included to accommodate after market long tube headers installation, here available is an OEM Chevrolet C7 Corvette x-pipe / midpipe modified to meet most emissions standards with high flow cats replacing the secondary oem catalytic converters. It is also a direct bolt on swap for any C7 corvette stingray, Grandsport, or Z06 using standard exhaust mounting locations.

Using high flow catalytic converters the original secondary cats were discarded and professionally welded with high flow cats that will accept the traditional/  oem oxygen (o2) sensor that allows the computer to monitor temperature and fuel mixtures.

This was used to meet / pass emissions in Illinois, which are very strict. It was mated with Long tube headers and the factory NPP mufflers / axleback. All bolt in perfectly to the oem / stock mounting locations.

When paired with a proper aftermarket tune, these high flow cats will not send a check engine light code while still allowing the corvette to run unhampered.

This is a GREAT cost-effective option to swap on when in need of passing emissions or have as a backup just incase when you add or have long tube headers.

Included are the clamps pictured connecting to the muffler .

 a pair of FRONT & REAR o2 sensor wire extensions are included as pictured

 - cheers