Product review (5 stars): fixed my problem
Shipping took a little long, but it was over the holidays.  Relatively easy to remove old valve assembly, and reused 90 deg elbow (with ample teflon tape), then install new one.

My 6 year old Bosch dish washer was making a loud awful noise.  Like a screeching vibrating noise. I thought it might be the valve, since the noise continued, even after unplugging the unit.  The only way to get it to stop was shutting off the water supply.  Plus, water was filling up the inside of the washer while the noise was happening, so my idea was the old valve could not close 100%, and the chattering noise was water intermittently rushing past it.