I would think that a shop like that could help you, but really doubt he coud find the replacement. Search google "collector brushes". I found a site explaining all the codes. BTW, nobody could help me and Bosch rep flat out refused saying all they can do is sell me the new motor.

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1985 190D 2.2l Sold-to Brother-in-law
1996 Mustang 3.8l -"thinks it's a sports car"
1988 Grand Wagoneer - Sold (good home)
1995 Grand Cherokee Ltd -"What was I thinking??!!"