Thread: Will the transmission in a 1991 420 SEL fit my 1990 560 SEL????
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Old 04-28-2014, 01:06 PM
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Das Benz Das Benz is offline
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Join Date: Dec 2013
Location: Ontario, Canada
Posts: 104
To repair the reverse, yes the transmission needs to be removed. It involves removing the front pump and you cant do that while it is in the car.

The 420 trans you have should work fine. The main difference betwwen the 420(722.355) and 560(722.350) is the 560 trans has an additional clutch disk in the drums compaired to the 420, its to handel the higher torque of the 5.6l when your punching it. The 420 trans might get worn out quicker when installed on a 560 but it should be marginal and just dont race the daylights out of it. Lol
Fitment and hookup is identical


I just went thru swapping the trans in my 420 last week, its a day job if you dont have a lift
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Just my MB's:
1990 420sel - Winter DD - 410,000km
1990 560sel - absolutely showroom mint - 360,000km!
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