Hope I'm not butting in, I replaced both valves a couple of months ago. I purchased them from Burkert; info below.  I bought two, one to keep for a spare.  Within 3 weeks the second OEM valve also failed.  Be very careful when removing the hose connections, there are several components to connector and some pieces are quite fragile.

Burkert #6213 A 13.0 NBR MS G ½" 2/2-way-solenoid valve, servo coupled / Ident No. 125657  (new Ident. No 221602)
https://www.burkert-usa.com/en/products/solenoid-valves/water-solenoid-valves/221602

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Mark Mueller
Brass Ring  A54