I think every boat can be different, but on my 2007 and 2009 4080 it was a in hull transducer.
Looks like a black puck, says air max on it and its usually in front of starboard motor by the firewall.
So the transducer does not physically go through the hull? I am going to install another transducer that is a through hull where I will drill a hole in my hull. I have installed a few of these and I was looking for the site of least water turbulence. Thanks for the info guys.
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