Is autobox the same throughout 124's

[penderb]

Hi

Just wanted to know if the autobox from an 1986 W124 300 Diesel will fit the later W124 Auto multi-valve E300 or vice versa? If there is are differences, what are they??

Billy

 

[mike65]

What year? They changed to a 5 speed electronic box very late in the w124 lifespan. It might not be compatable.

Mike.

 

[Bolide]

AFAIK there were no 5-speed auto W124 diesels. The 5-speed auto was an option from 1992 only on the six-cylinder cars. I don't think it was standard fit on the W124 at any time

The late multivalve diesel (WDB1241912Fxxxyyy) box is a 722.435 and the box for an early 250D (WDB1241852Fxxxyyy) is 722.414. There is obviously a difference but I can't say what it is. Some W210s used a 722.436 and that's suitable as ell. I'm told later W210s went to an electronic speedo drive but that the old mecahnical drive can be fitted in place of the electronic sender

Physically, I would expect them all to be interchangeable. But there's quite a big difference between the early and late gearboxes. Early ones are lazier and later ones step off from rest better and hold on to gears longer - or that's how it always seems to me

Multivalves use a pneumatic signal to flare shifts under full throttle. I don't think that system's present on the early cars

I'd stick with a contemporary box

Nick Froome
www.w124.co.uk