Re: Fuel Water Separator Question
Chris, if the base adapter is usable, I agree with Bill. Just replace the cartridge.
You'll find up to three different cartridge spin-on thread sizes, so perhaps take your old cartridge along with you.
If your base adapter is corroded, replace it, or bead blast it, and clean it up. Been there/done that, and it works just fine.
Now, if you want a premium style fuel/water separating system, look at the Parker RACOR units.
These can now be bought through GLM and Sierra, and can be a retro-fit kit for your existing base adapter.
Again, all you need is the spin-on thread size.

Or purchase the entire kit.
Rick ... aka Ricardo
Portland, Oregon
28' SDN F/B w/ twin Volvo Penta 5.7L DP's