What is this part called? I'm new to the EFI and developed a fuel leak on the way in today, I assume a gasket or is there a issue that could have went wrong inside to cause a leak?

thanks

That is your vapor separator tank, here is a breakdoown of the parts:

http://www.mercruiserparts.com/Show_...SEPARATOR+TANK

Thanks I was definitely barking up the wrong tree

Where is it leaking from?

Right in the backbi assume a gasket

Yup, could be the cover O-ring, they get pinched once in a while.

Hoping thats all, what happens when i take apart is it pressurized? is there a pressure relief somewhere? or just pull apart have some rags ready?

thanks

Just get rags ready. It is not pressurized but is full of fuel. Word of advice buy more than one of the o-rings as they don't hold shape very well. Ask me how I know.

So looks like I have to buy a kit for 90 bucks go figure, I wonder if its just the top o ring or if there is a issue that caused this

I just found a part number for the top seal ring sold by itself, 803831. About $8.75