Simplifies Header Installation. These 6 wire BBK O2 Wire Harness Extenders are a must when installing full length headers on your 2015-2018 Dodge Charger, Challenger 6.2L Hellcat due to the fact that the O2 sensor locations are relocated on full length headers. So rather than cutting into your factory wire harness to make the connections reach, simply plug in a set of BBK extensions and make all the connections look factory with no mess. Easy Installation. OEM connectors and heat protective sleeves are used to make installation a snap. Simply transfer your factory oxygen sensors to the new O2 sensor location in the collectors and click these into place on the OEM harness. Locator Tabs. Some connectors may require the small directional location tabs to be removed from the ends of the connectors to click into place.