Unable to find 30 year old Gaggenau Oven EB 378 610 part

Every once in a while, the heating element seems to break on my Gaggenau EB 378 610 oven. Other than that, it works fine.

This time though, I am unable to find a replacement part since the manufacturer discontinued it. I searched everywhere online and on eBay, but was still unable to find it.

I would rather not buy a new oven since that would be very expensive and I like this one. Does anyone have any ideas about where I can find a replacement heating element? Or am I out of luck?

It's a convection element, part #00098494, 100L