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Guest Message by DevFuse

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Transmission Codes

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#1 99ImprezaOSport


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Posted 17 April 2010 - 08:29 AM

I've found this information and have been told to list it here too...

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


"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.

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