Looking for advice before I head out to the auto parts store. I've got a 1st gen TRD boost gauge to install on my 2nd gen S/C. Looks like I need the rubber fitting noted in the pic below. I've got several fittings that came with the gauge, but they are all metal and threaded. I've searched here and XRunner Underground and only found the pic below of what I need.
Sorry, I'm not too mechanical, just want to know what to ask for so I look somewhat educated. Any advice appreciated.