2003 CLK 240 Auomatic Gearbox querie...part No's...right gearbox?

[Vlad]

Hi

I've got a duff gearbox in a CLK and I'm looking to get a 2nd hand one, but I'm getting confused with Part Numbers and making sure I get the right one.

So my first question and it could be a dumb one.....with a manual box you obviously get different gear ratio's in a manual gearbox in order for them to work with different engines/characteristics, so putting a gearbox for a diesel engine car into a petrol could stuff up the gear ratios and make the car bad to drive.

Does the same apply on automatic gearboxes?...as far as I understand its the differential ratio that makes the difference.

So with that in mind, if I was to purchase a 722.6 gearbox that had been in a diesel and fit it to a CLK petrol and the part No is the same 140 271 26 01 will it work? The bit that confuses me is that my gearbox also has another number on the side of it, namely 210 271 08 01 which when you that number into a search engine it comes up with mainly S500'S, CLK55's etc

Help and guidance/clarity would be greatly appreciated.

 

[W1ghty]

Hi

I've got a duff gearbox in a CLK and I'm looking to get a 2nd hand one, but I'm getting confused with Part Numbers and making sure I get the right one.

So my first question and it could be a dumb one.....with a manual box you obviously get different gear ratio's in a manual gearbox in order for them to work with different engines/characteristics, so putting a gearbox for a diesel engine car into a petrol could stuff up the gear ratios and make the car bad to drive.

Does the same apply on automatic gearboxes?...as far as I understand its the differential ratio that makes the difference.

So with that in mind, if I was to purchase a 722.6 gearbox that had been in a diesel and fit it to a CLK petrol and the part No is the same 140 271 26 01 will it work? The bit that confuses me is that my gearbox also has another number on the side of it, namely 210 271 08 01 which when you that number into a search engine it comes up with mainly S500'S, CLK55's etc

Help and guidance/clarity would be greatly appreciated.

Hi Vlad , I can’t answer your question , but if you are in Reading , you could stop in and ask Ian at Star Motor Services , Caversham . He is a Mercedes Specialist

 

[Vlad]

I know Ian and Mike very well...have used them for 16 years. Great guys. Just hoped to try and figure this out myself.

The more I'm searching on compatability, the more i'm realising that its not just a case of finding another 722.6 gearbox and slinging that in.

 

[Bayleaf]

Vlad. What's the size in the CLK