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Home >> BMW >> 2021 >> M4 Base, Standard Trans >> Repair and Diagnosis >> Transmission >> Manual Trans >> Manual Transmission -- Repair M4 (G82 & G83) >> 23 00 Manual Transmission >> 23 00 230 Removing and installing manual transmission (M4 2021-2023) >> Installing the manual transmission (GS6L55TZ)

Installing the manual transmission (GS6L55TZ)

CAUTION: Materials harmful to health.
Contact with fluids harmful to health!
  • Note and follow safety instructions on containers.
  • Conduct all work in appropriate personal protective equipment only.
NOTE: RISK OF DAMAGE
Damage to the transmission.
Damage to the transmission due to unapproved transmission oil.
  • Use only the approved transmission oil.
  • Check the transmission oil level after completing the repair.
NOTE: RISK OF DAMAGE
Clutch damage.
When the transmission is unscrewed, the transmission must not hang freely because this may cause a deformation of the clutch disc.
  • Support the transmission with a transmission jack.

Prepare for the installation of the manual transmission 

G13691431Courtesy of BMW OF NORTH AMERICA, INC.
G13691432Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: TECHNICAL INFORMATION
For additional information see: 1.0 Greasing and mounting shifting components
G14903867Courtesy of BMW OF NORTH AMERICA, INC.
G14902390Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter to holder 
M8 Replace screw. Tightening torque  19 Nm
G14903578Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Catalytic converter to holder 
M8 24 Nm
G14903577Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Ground strap to transmission or body 
M8 tightening torque  19 Nm
G14639821Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: TECHNICAL INFORMATION
For additional information see: 1.0 Greasing and mounting shifting components
G14903875Courtesy of BMW OF NORTH AMERICA, INC.
G14903876Courtesy of BMW OF NORTH AMERICA, INC.
G14902402Courtesy of BMW OF NORTH AMERICA, INC.
G14902403Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Clutch slave cylinder to clutch housing/transmission housing 
M8 x 25 Replace screws. 19 Nm
G12731062Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATIONS

Transmission to engine 
M8 Tightening torque  19 Nm
M12 Tightening torque  66 Nm
Fig 1: Transmission Bolts Tightening Sequence
G12731117Courtesy of BMW OF NORTH AMERICA, INC.

Follow-up work