The Mercedes EPC shows the part number as 1245438832, up to the end of model year 1992. Have you considered sending a request to Fastlane or AllPartsExpress (above, under Buy Parts) to see if they can quote you a price on it?

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1993 400E, 256,000 miles (totaled)
1994 E420, 200,000+ miles
1995 E420, 201,000 miles