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Home >> BMW >> 2021 >> M440i xDrive >> Repair and Diagnosis >> General Information >> OEM General Information >> General Orphan Data (3 Of 3) >> Installing the complete exhaust system

Installing the complete exhaust system

CAUTION: Component with heavy weight. 
Injury hazard! 
  • Note component's center of gravity.
  • Support component using a jack.
  • Secure component against falling off the jack.
CAUTION: Heavy component. 
Heavy components can lead to injury or damage. 
  • Remove and install heavy components with the aid of another person/other persons.
CAUTION: Shavings resulting from sawing or grinding components. 
Injury hazard! 
  • Conduct all work in appropriate personal protective equipment only.
  • Wear safety goggles and hand protection.
NOTE: TECHNICAL INFORMATION 
Check the exhaust system for tightness after installation.
NOTE: TECHNICAL INFORMATION 
Mount the exhaust system in a de-energized state, following the tightening sequence from the rear silencer towards the exhaust manifold.
CAUTION: Shavings resulting from sawing or grinding components. 
Injury hazard! 
  • Conduct all work in appropriate personal protective equipment only.
  • Wear safety goggles and hand protection.
G11104929Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: Schematic diagram is for example purposes. Some parts may differ in certain details.
TIGHTENING TORQUE SPECIFICATION

Rear silencer to body/bumper support 
M8
Replace nuts.
Tightening torque  19 Nm
G14639392Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: The following step(s) must be performed if the listed component(s) is/are installed.
TIGHTENING TORQUE SPECIFICATION

Rear silencer on support 
Nut M8
Replace nut.
tightening torque  19 Nm
G14181389Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATION

Front pipe/front silencer/gasoline particulate filter to the transmission holder 
M8
Replace nut.
tightening torque  19 Nm
G14228344Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATION

Front pipe/gasoline particulate filter on transmission holder 
M8
Replace nut.
tightening torque  19 Nm
TIGHTENING TORQUE SPECIFICATION

Exhaust system to catalytic converter 
Ribbon clamp nut M8
Replace the ribbon clamp.
tightening torque  26 Nm
Ribbon clamp nut M10
Replace the ribbon clamp.
tightening torque  55 Nm
G14228342Courtesy of BMW OF NORTH AMERICA, INC.
TIGHTENING TORQUE SPECIFICATION

V-ribbon clip to catalytic converter 
V-ribbon clip
Replace V-ribbon clip.
tightening torque  25 Nm
G12887738Courtesy of BMW OF NORTH AMERICA, INC.

Install the connecting supports on the tunnel 

TIGHTENING TORQUE SPECIFICATION

Connecting support to tunnel 
M8x25 screw tightening torque  20 Nm
Screw tightening torque  3 Nm
G15580120Courtesy of BMW OF NORTH AMERICA, INC.
NOTE: The following step(s) must be performed if the listed component(s) is/are installed.