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23 Transmission Designations

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Breakdown of BMW designation: 

TRANSMISSION DESIGNATIONS TABLE (BREAKDOWN OF BMW DESIGNATION)

A5S 300J  (old designation)
A Transmission type
  • S = Manual transmission
  • A = Automatic transmission
5 Number of forward gears -
S Type of top gear
  • D = Direct gear
  • S = Overdrive gear
300 Max. input torque (Nm) -
J Code letter of transmission manufacturer
  • G = Getrag
  • J = Jatco
  • R = GMPT (General Motors Powertrain)
  • Z = ZF (Zahnradfabrik Friedrichshafen)
SMG Notes SMG = Sequential M gearbox/transmission
GS6-37BZ  (new designation according to BMW Group Standard GS 90007)
G Transmission -
S Transmission type
  • S = Manual transmission
  • A = Automatic transmission
6 Number of forward gears -
- -
  • = Standard with manual gearshift
  • HP = Hydraulic planetary gear
37 Transmission type
  • 26 = D-transmission
  • 31 = C-transmission
  • 39 = F-transmission
  • 37 = H-transmission
  • 53 = G-transmission
  • 17 = I-transmission
  • 47 = J-transmission
B Gear set
  • B = Petrol/gasoline gear ratio
  • D = Diesel gear ratio
Z Code letter of transmission manufacturer
  • G = Getrag
  • Z = ZF (Zahnradfabrik Friedrichshafen)

Manual transmission: 

MANUAL TRANSMISSION TABLE

BMW designation Manufacturer Manufacturer designation Remark
S5D 200G Getrag B transmission (220/5) -
S5D 200G Getrag B transmission (221/5) for M41 engine only
S5D 250G Getrag B transmission (220/5) Reinforced design
S5D 260Z ZF C-transmission (S5-31 D) for M51 engine only
S5D 280Z ZF C-transmission (S5-31) -
S5D 310Z ZF C-transmission (S5-31) up to 9.95
S5D 320Z ZF C-transmission (S5-31) from 9.95 (reinforced design)
GS5S31BZ (SMG) ZF C transmission SMG
GS5-39DZ ZF F transmission -
S6S 420G Getrag D-transmission (226/6) -
S6S 420G (SMG) Getrag D transmission SMG
S6S 560G Getrag E-transmission (286/6) -
GS6-37BZ ZF H-transmission -
GS6S37BZ (SMG) ZF H-transmission -
GS6-37DZ ZF H-transmission -
GS6-37BG Getrag H-transmission -
GS6-53BZ ZF G-transmission -
GS6-53DZ ZF G-transmission -
GS6-17BG Getrag I-transmission -
GS7S47BG (SMG) Getrag J-transmission (247) SMG 7-speed

Automatic transmission: 

AUTOMATIC TRANSMISSION TABLE

BMW designation Manufacturer Manufacturer designation Remark
A4S 200R GMPT GM4 -
A4S 270R GMPT THM-R1w Transmission wide stepped
A4S 310R GMPT THM-R1 -
A5S 300J Jatco Jatco -
A5S 310Z ZF 5HP-18 -
A5S 325Z ZF 5HP-19 -
A5S 440Z ZF 5HP-24 -
A5S 560Z ZF 5HP-30 -
A5S 360R/390R GM GM5 -
GA6HP19Z ZF 6HP19 -
GA6HP26Z ZF 6HP26 -
GA6HP32Z ZF 6HP32 -
GA6L45R GM GM6 -