Bosch has been of no real help other than confirming part numbers.
The 0 986 615 355 is correct.

Their distributor Mid South quoted me 4 months lead time and a price of $53.50

Google is my friend. Found I think German stock of the Bosch part for $11USD.
Of course, if you like their price, wait til you see the shipping costs.

__________________
1985 300D 198K sold
1982 300D 202K
1989 300E 125K
1992 940T

"If you dont have time to do it safely, you dont have time to do it"

"The democracy will cease to exist when you take away from those who are willing to work and give to those who would not."