Skunk2 O2 Sensor Extension Honda Civic Si 06-15 53540-S04-013 We hope that true S

We hope that true S fans will adopt and install this product

A standard 1 BOX car���s wheel regards the load to clear JWL-T standards which is far heavier than a regular vehicle

Spoon�s 2-1 downpipe is designed to provide a wide torque band and is ideal for use on the street or track

You can then screw the snap-on/off bolts into the tailgate trim

Skunk2 O2 Sensor Extension Honda Civic Si 06-15 53540-S04-013 We hope that true SThe Skunk2 O2 sensor wire harness extension is designed for the '06 '15 Civic Si. These extensions are great for installing an aftermarket header where the OEM O2 sensor wires are not long enough to reach the new bung location. Designed for the Skunk2 header and exhaust.