Sealand Dometic valve replacement?

[Jane929]

Anyone know where I can purchase a replacement flush valve for the Sealand Dometic toilet? I have found a few but they appear to be cheap imitations.
Thank you!

 

[Shane826]

Here’s the original Dometic (p/n 385314349):

https://a.co/d/5ljUMZd

I went with this one because the guts are brass and it is allegedly freeze-proof and has a lifetime warranty:

Amazon.com