Skunk2 O2 Sensor Extension Honda Civic Si 06-15 53540-S04-013 Made from durable materials including

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

Fourth-Generation Civic and CRX owners rejoice

Alpha Series Rods are forged from select 4340 chromoly steel and feature an H-beam design

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

Skunk2 O2 Sensor Extension Honda Civic Si 06-15 53540-S04-013 Made from durable materials includingThe 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.