Used fuel sender - should I replace?

I bought some flight proven tanks to speed up my wing build. I got to about 0.5 psi and the sender had a leak on the first one. So I'm pulling out the gasket and prosealing them in.

Question is do I spring the $60 for new senders while it's super easy to change them? They have 600 hours on them, and the manufacture date stamped on them is June 2002.

I put my multimeter on them and both tested ok. Do these things have a service life? What would you do, and what experience would push you to that decision?

Fuel sender

Josh,

Yep replace it while you can. I bought an -8 and later discovered a fuel seep in the right inside access panel. Replacing the fuel sender as well since I have the panel off anyway. Cheap insurance if you ask me and you really don’t want to open up that panel again later if the sender fails do you?

2002 is 17 year old senders, your call......