Old Tub/Shower Diverter Replacement

8

Dear Meh,

I’m having problems with the water faucet diverter in the guest bath. It just flat doesn’t work. Water just pours out regardless if the little knob is up or down. (I never have tried it until today) I managed to get the chrome part of the faucet off just by unscrewing it but now I’m looking at some threads/connection that I don’t see in the YouTube videos about replacing diverters. To wit:

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I don’t want to break the pipe or anything trying to get that weird coupling off of there. It looks pretty permanent. Can you help me find the proper replacement diverter?

Signed,

Lost Plumber