Skunk2 06-11 Honda Civic Si O2 Extension

The O2 sensor wire harness extension is designed for 2006-2014 Civic Sis. These extensions are great for installing an aftermarket header where the oem O2 sensor wires arent long enough to reach the new bung location. Designed for the Skunk2 header and exhaust. Alpha Series Race O2 Sensor Extension; Plug And Play; For Use w/Skunk2 Headers And Exhaust;