Lt. Information from Siemens is the replacement part (AquaStop AS II) with part number 00091058, which can also be used for the part numbers 00085572, 00091059, 00088035, 00088036, 00085512 and 00086109. Obviously, all the same part.
I ordered then here it makes for far under half the price according to the motto, experimental smart. After receiving the goods is to note that there was no difference at all to the previously built part. Absolutely identical internal, external and incl. All imprints. I therefore of an original one. But at a price well below half .....
The installation is very simple and everything needed, including bebildeter instructions, accompanied also the delivery. Power off, shut off the water and old solenoid valve easy off and screw. Cable connection to the machine at the old solenoid valve by pinching (yes, you read that right). Then the cable with the crimp on the new solenoid valve again attach (or soldering) and the previously applied heat shrink tubing with lighter good verschrumpfen. Case screw, all hoses Refit and attach solenoid valve back on the water connection, turn on and ready.
And already the dishwasher works fine again.
What still remained? Deprive my wife the catalogs for new acquisition and happily report that no new machine must be purchased :))