Hey guys... very simple but stupid problem. On my 500 EFIs there is a spin on filter, then in the rear of the motor just behind the manifold is an inline filter (much like a car filter) that is connected to a hardline with a flare nut on either end. Mine have no part numbers on them, and the manual makes no mention at all of them. Can someone please provide me of a source for these filters as I'd like to replace?

http://www.mercruiserparts.com/Show_...+And+Injectors See number 15 in this link. Also see number 38 in this link.http://www.mercruiserparts.com/Show_...nd+Fuel+Cooler

Thank you so much. Exactly what I was looking for.

I replaced mine this year aprox. $38.00 each from merc. dealer, use caution when replacing not to over tighten. I had problems with one dripping from too much strong arming.
Steve