I have a mostly-unused Bosch voltage regulator for alternators in a variety of Mercedes vehicles (part number 1 197 311 028).

I installed it in my old alternator, found out that the voltage regulator wasn't the problem, and thus bought an all-new alternator. As such, this one is a wee bit dirty from having been installed and used once or twice, but it is in great, like-new shape. I was going to list it on eBay but figured I'd try here first just in case anyone here needs one.

A complete listing of all the Mercedes vehicles/alternators that this part is compatible with can be found here.

The new price on these seems to run from $25-$35.

I'm asking for $17 for this one (shipping included).

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'79 300SD
'82 Chevy Chevette diesel