$45 gets you a used motor delivered to your door. Its from a 1992 400E I'm parting out. Believe it to be the same as yours but you would need to verify. If interested, I'll remove and test operation. I also have the transmission arm available.

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Hanno
'79 6.9 Sold (after 27 years)
'83 280SL, 5 spd.
'94 E320 Sdn. 5 spd conversion
'02 E320 Sdn.(on loan to mom!)
'87 300E (5 spd. conversion) Sold
'05 E500 Wagon