As an aside, I wonder at the differences in culture UK/US. When my alternator on my 190E went wrong, I bought a rebuilt unit from my local Bosch agent for 38 pounds, say $60. I paid pretty much the same for a rebuilt unit on my beemer.

I've never considered replacing just the VR.

Perhaps this is because Bosch units are used on some very ordinary cars in Europe?

Just an observation

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Cheers, Neil