The typical conversion involves sourcing and replacing your 4-speed with a Getrag 245 5-speed overdrive transmission from a 1979 to 1982 BMW E21M, 320i, or 320iS. Alternatively, a Getrag 240 from a 1983 320i or 320iS can be used. Either transmission HAS THE CAPACITY TO bolt to the M10 engine and each has a mechanical speedometer cable drive gear, allowing your 2002 speedometer to function as intended. (The Getrag 240 from a 1894-1985 E30, 318, or 318iS can be used but DOES NOT INCLUDE A mechanical speedOMETER CABLE drive GEAR).
What Kind of Transmission Do You Own?
Getrag 240
Getrag 245
The Aardvarc 5-speed kits allow for the installation of a GeTrag 245 or Getrag 240 transmission into a 2002 with a 4-speed manual transmission. Aardvarc kits do not include the transmission itself. The 2002 owner is encouraged to source a transmission from Aardvarc or others. Our supply is usually very low due to both demand and AVAILABILITY, but please inquire if you are interested.
For more information about our kits, please select either “Getrag 245” or “Getrag 240.” Note the 245 has a 3-piece aluminum case, and the 240 has a 2-piece case like your stock 2002 4-speed.