The Getrag F25 manual transmission was fitted to many vehicles in the European
Opel
Opel Automobile GmbH (), usually shortened to Opel, is a German automobile manufacturer which has been a subsidiary of Stellantis since 16 January 2021. It was owned by the American automaker General Motors from 1929 until 2017 and the PSA Grou ...
production line-up including the
Opel Calibra. It is a five-speed transmission with the following configuration:
*
Front-wheel drive
*
Transverse
Transverse may refer to:
*Transverse engine, an engine in which the crankshaft is oriented side-to-side relative to the wheels of the vehicle
*Transverse flute, a flute that is held horizontally
* Transverse force (or ''Euler force''), the tangen ...
-mounted
* Clutch diameter
* Dry weight ; wet
Gear ratio
*
Differential ratio 3.82:1 or 4.05:1
Designation
There have been many references to the numbering designation that Opel elected to utilise for gearboxes; one of the more common arguments is that it refers to the ft·lbf torque capacity of the gearbox, in this case being a torque limit. Other arguments include that it is simply related to the engine size (the F25 gearbox was often fitted to 2.5-litre engine vehicles).
This argument, that engine size is the justification for the numbering, could be disputed as the Opel Vectra B with the 2.6-litre
V6 engine was fitted with an F23 transmission.
As an example, the F25 transmission was fitted to the
Opel Calibra 2.5-litre models (
C25XE
C, or c, is the third letter in the Latin alphabet, used in the modern English alphabet, the alphabets of other western European languages and others worldwide. Its name in English is ''cee'' (pronounced ), plural ''cees''.
History
"C" ...
and
X25XE engine models).
The numerical designations usually indicate the maximum torque rating of the gearbox in newton metres. For example, the F40 gearbox is rated at 400 Nm or 295 ft-lbs torque; the M32 gearbox is rated at 320 Nm; the F17 gearbox is rated at 170 Nm, and so on.
External links
opel-infos.de
{{Getrag
General Motors transmissions
Getrag transmissions