Shibby Engineering CCV Upgrade Harness Plug.
For 2011, 2012, 2013, 2014, 2015, 2016 Ford 6.7 Powerstroke
If you have done a CCV modification to you 6.7L equipped Ford Super Duty, this connector will cap up the harness interface for the removed components. Weather sealed to protect the PCM from shorting out due to debris or water.