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bones33 12-03-2012 12:54 PM

MTX75 Final drive ratio identification
I'm looking for information on swapping a 3.41 final drive trans into my 05 ST that has the 3.83 (I think) to reduce 80mph commute rpms at my new job.

So, how do I positively ID a 3.41 trans in the wrecking yard? Is there a code on the trans, and where is it located?

Thanks in advance!

bones33 12-05-2012 08:12 AM


Does anyone know if the trans has a code actually on the trans that indicates final drive ratio, or at least the two letter trans code. If so, where should I look?

petik 04-29-2015 08:46 AM

I know this is a very old thread, but did you ever figure this out? I'm curious about finding one of these myself.

bones33 04-29-2015 01:40 PM

Negative. Seems like there should be an ID stamped somewhere. I'm not finding anything on web searches iether, but I may not be searching correctly.

Can't trust the VIN code on our older vehicles because they could have swapped in a used or rebuilt of a different ratio.

petik 04-29-2015 01:50 PM

bummer. i know the s/se models of 08+ had 3.56 trans but from what i understand that bell housing won't bolt up to a zetec. i think the 03-04 duratecs had the 3.41 but again won't bolt up to a zetec.

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