If the car is a USA model then it has only a 3 speed transmission!
The Diff on that car is a 3.07/1 ratio. Chassis number starts 107.044.
NOT true on euro 350SL, 107.043 chassis.
MERCEDES Benz Master Guild Technician (6 TIMES)
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190E 2.3 16V ITS SCCA race car (sold)
1986 190E 2.3 16V 2.5 (sold)