That would be the heat exchanger for an IC yes...but the core I had decided to do it's impersination of Niagra Falls into my LIC a couple years back. So with the Whipple the IC core needs a bit different design than with a standard M90 Style IC. I have a forum member on here building me a custom IC core that will work with the Whipple setup and not leak. That's what I'm waiting on.