Who knows the difference between f57aa and f57fa torque converter ?

[Momohenri]

everything is in the title
Best regard Henri

 

[pjtoledo]

according to this web site they are interchangeable. see the DACCO listing at the bottom.
not sure if there are significate differences.

FM136HD (F57AA) - 4R44E 4R55E 5R44E 5R55E A4LD TORQUE CONVERTER - Product Details

www.buffaloengine.com

maybe a call or Email to them for details?

 

[RonD]

Same part, the AA might be a slightly later revision in the same 1995 first year or someone just dropped an A because they are the same

F5 = 1995 << year part was first used, not the year of vehicle it was used on
7 = Ranger, or light truck
AA or A is a revision designation << when a small change is made to a part Ford would update the revision number to AB or AC

If a part was changed significantly the Year would be updated so 4L5AA = 2004 Ranger 1st revision

A 2004 part can fit a 1985 vehicle, so backwards compatible, or it can fit a 2020 vehicle, so don't let the Year of a part number throw you off

 

[Momohenri]

very nice , it's only wat i need