Appears to be a leak where from the radiator, coolant is bubbling out underneath hose that runs to overflow, with noticeable amounts of coolant on fan housing. Trying to determine exactly what to replace, is it a seal, the entire radiator, or something else?

 

Assuming your arrows are pointing to the top tank, then yeah, looks like a whole new radiator.

 

If the crimp between the plastic and the aluminum is leaking or a crack in the plastic, then you'll need a new radiator. I've used Denso radiators on my Hondas and they haven't caused me problems.

 

I second Denso radiators.

 

Thanks! After looking back definitely was the radiator. Got a new one swapped out, and back on the road.

 

Careful there... I replaced a radiator due to a leak near the radiator cap and leaking onto the cooling fans and the SAME thing happened to the NEW radiator.

It turned out that the little overflow hose was leaking every time the radiator cap let off pressure. See where that drop of water is?
That's where the coolant was shooting out from the connection from that little hose connection in my situation.
After I saw what was happening I got a little hose clamp and clamped it on the little hose. After that, problem gone.

Just make sure it is not that little overflow hose that is leaking, before you replace the radiator.

 

Thanks for the heads up I'll keep an eye out, but I did notice some bubbling coming out of the crimp between the plastic/aluminum noted above, fairly confident that was the culprit.