This oxygen sensor extension kit prevents cutting your factory harness, and safely extends your oxygen sensor wires during relocation of your O2 sensors due to installation of aftermarket exhaust components on your Hellcat/Demon with 8 pin connectors for the front and 4 pin connectors for the rear. This kit can be used on any brand of long tube headers, not just Kooks Custom Headers.
O2 Extension Kit 2015+ Hellcat / 2018+ Trackhawk 2) 6" Front Extension Harness (8-pin) 2) 18" Rear Extension Harness (4-pin). Oxygen Sensor Extension harnesses are included in Header kits where needed. This part number should only be ordered as a replacment for damaged or lost Oxygen Sensor Extensions.