This is the intercooler coupler needed if you previously purchased our ZZP intercooler kit for the stock turbo and purchased the Z04 at a later date. It connects the turbo outlet of the Z04 to the hot side of the intercooler system. 

If you have our Z04 and purchased our Gen 2 Cruze Intercooler Kit with the Z04 option, you DO NOT need this coupler; your kit will have come with it.