FastLane has the volt.reg./brushes unit for approx. $15+ bucks. They probably have it for your model Benz. With overnight delivery, your ready to go. I carry a spare in my car. It's so cheap, I'd say it's worth a chance. Good Luck.

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Paul 1987 300 SDL; 2000 ML; '69 MGB; '68 VW Fastback