I found this picture of a water cooled head for sale in one of those auction sites. I decided to post the picture in the site since all the time I used to read about them but never had the chance to see what one of them looked like.

From the picture it looks like a simple liquid recirculating circuit. I am not an expert mechanic, but I would say it is missing a little electric fan to cool the radiator panel and a plastic (or whatever) container to hold the coolant. Please, if you are the designer of this do not take this comments as criticizim of the system cause the picture might be missing other components.

Since this picture might call a lot of attention from visitors, let me make something clear. I DO NOT SELL THIS HEAD COOLERS, I DO NOT REMEMBER WHO MAKES THEM, I AM NOT RECOMMENDING THEM AND I AM NOT EARNING ANYTHING FROM POSTING IT HERE. So, please do not ask me how much was it or who made it, cause simply I do not know. I only put it here for educational purposes of all Odyssey owners.