3/8

 

If you buy a B&M 70268 SuperCooler it will come with the fittings and should come with enough hose to install.

 

You are too helpful Kyle.
j/k

 

One more question. When installing the cooler, do I just detach the top metal cooling line, bend it away from the rad and thread in the ****** fitting from the kit? Or did you shorten and reflare the line?

Thanks for the tip swartlkk

 

I just bent the line over to where it wouldn't be a problem. In many other installations, I just cut the line and double hose clamp the rubber line on.