Skunk2 O2 Sensor Extension Honda Civic Si 06-15 53540-S04-013 help put the finishing touches

help put the finishing touches on your engine

Made from durable materials including a steel frame and high-density foam padding

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

to further improve the high dynamic performance of the S660

Skunk2 O2 Sensor Extension Honda Civic Si 06-15 53540-S04-013 help put the finishing touchesThe 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.