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1999 Impreza OB Sport
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OK, so I've found a tranny which is off a 2004 Impreza 2.5 TS which has the same 3.900 rear, per opposedforces.com From the pictures I've seen it looks exactly like mine, connections, etc... I do notice that the 2004 has a hydraulic shifter but the I can swap out the cable one I have...

Does anyone know if this one will work? I have a 1999 Impreza Outback Sport 2.2

I have a TY754VA1AA tranny with a 3.900 rear. The one I've found is a TY754VC5AA. The gears are geared a little different but both are near matches including the 3.900 rears

US Impreza EJ22 MY99-01
TY754VA1AA
3.545 - 1st
1.947 - 2nd
1.366 - 3rd
0.972 - 4th
0.780 - 5th
3.333 - Rev
1.000 - T.R.
3.900 - F.D.
Viscous (4kgf) - Center Diff
Open - Front Diff

US Impreza TS MY04
TY754VC5AA
3.545 - 1st
2.062 - 2nd
1.448 - 3rd
1.088 - 4th
0.780 - 5th
3.333 - Rev
1.000 - T.R.
3.900 - F.D.
Viscous (4kgf) - Center Diff
Open - Front Diff

I've also found this information, unfortunately the final 4 numbers which are the only difference are not specific...

Transmission identification codes start with a "T" and an example would be:

TY856WB1AA

"T" = transmission code

"Y" = that it is a manual awd gearbox

"85" = the transmission classification...in the case of manual gearboxes this number indicates the gear shaft spacing in millimeters. 6-speed transmissions use an 85mm shaft spacing while the current generation of 5-speed transmissions use a 75mm shaft spacing.

"6" = some reference to the transmission case. "6" is used for 6-speeds, "4" is used for 8-bolt 5-speeds, "2" for 4-bolt Impreza 5-speeds, "5" for Forester 8-bolt 5-speeds, "3" for 4-bolt Forester 5-speeds, and "7" for some Legacy turbo 8-bolt 5-speeds.

"W" = transmission specification. "W" is 6-speed, "V" is 5-speed, "Z" = AT with MPT, "Y" = AT with VTD, etc.

"B1AA" = indicates various details about the equipment such as center diff. type, front LSD, etc. and also about minor production changes.

Is there something I'm missing? I'm currently still driving with the 1999 tranny and would hate to take everything apart to later find out there is something different or something that will cause problems down the road.
 
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