[scooper321]

This is on the Freshwatersystems.com site. I have the old style strainer on the left. I assume that is no longer available? so you may have to switch to the new style if you need a strainer.
My 2003 360 had the new style strainer, but my 2004 400DB has the old style, go figure. Maybe they built it out of left over parts

FWIW I buy all my spare fittings from them.

The SHURflo 255-213 can be used to replace your old style SHURflo 17006109 or 17006129 Strainer.

The pumps are MPT-in and the strainers are MPT-in and FPT-out so the fitting you need for the end of your tank hose is FPT. So the fitting you showed from Defender is not the right one.

This pic is a winterization photo so the strainers are removed and my pigtail for pumping in the pink is on the pumps, but those fittings that you see on the ends of the tank hoses are what I assume you are asking about.
View attachment 93947
should be this:
https://www.freshwatersystems.com/products/watts-aqualock-seatech-female-connector-15mm-x-1-2-nps

Perfect. Yes. That’s exactly the fitting, thank you! I saw that on fresh water systems, but I wasn’t positive it was the correct one. So thanks for the confirmation. And for the part number for the filter. I will likeLy buy two (or three) of each.

And Frank is right - I would normally go to the store and match parts, but I can’t take the old one out until I drain the tank and remove it. I’m still using the boat, so I’m getting the parts lined up for when I winterize. That will be the time I replace this fixture.

 

[scooper321]

Steve, is your filter cracked/bad? If you didn't already know this, the filter inside there is just a mesh screen - you can clean and reuse.

I’m not sure. The fixture itself is leaking. So that’s why I’m replacing it. I figured I’d replace the filters as long as I was there. They are likely 17 years old (2003 400DB). If the fixtures are brittle and leaking, it’s likely the filter connections won’t be far behind.