ARB compressor set up question

I’ve got everything set up and ready for an install... ARB twin model.

one thing that’s not obvious to me is how I can mount the hose coupler directly to the compressor... I mean I see all the install videos have it mounted so I know it can be done..but how? Is there an adapter needed? See pic.

Thanks in advance!

 

There is a top outlet fitting to screw on the coupler

 

I used a coin to tighten it down if that’s your question. I added pipe thread cause it leaked a little. Only problem is it is right where my washer fluid line is on my hood. So I have a weak stream problems now. I used the slee mount.

 

Did you figure out how to attach that coupler and tighten it down? I have the same problem tightening it.

 

I realized after all of this ARB had sent the wrong coupler....it was the JIC4 version from the air line relocation kit. Looks identical but much smaller thread...hence why it wouldnt mate up to the compressor! duh! ARB sent new one, all is good.