Safety Warning
DIY auto repair can cause serious injury, fire, or vehicle damage. These guides are for informational purposes only. Always follow OEM torque specs, wear PPE, and consult a certified mechanic if you are unsure. You are solely responsible for your safety.
2018 BMW 740iFACTORY OEM SERVICE PROCEDURE
Engine - Intake System - Repair (G12)
- 11 61 Intake System
- 11 61 050 Removing and installing the intake plenum (740i 2016-2022, 740i xDrive 2017-2022)
- 11 61 051 Replace intake plenum (740i 2016-2022, 740i xDrive 2017-2022)
- 11 61 730 Leakage test for the intake system (740i 2016-2022, 740i xDrive 2017-2022, 740e xDrive PHEV 2017-2019, 745e xDrive PHEV 2020-2022)
- 11 61 050 Removing and installing the intake plenum (740e xDrive PHEV 2017-2019)
- 11 61 050 Removing and installing the intake plenum (745e xDrive PHEV 2020-2022)
- 11 61 051 Replace intake plenum (745e xDrive PHEV 2020-2022)
- 11 61 065 Removing and installing/replacing the left intake plenum (750i 2016-2019)
- Lower the engine with the special tool
- Releasing air conditioning compressor
- Release front screw connection for left engine mounting bracket
- Release screw connection for left engine mounting bracket
- Removing left engine mounting bracket
- Disconnecting front knock sensor plug connection for cylinders 5-8
- Disconnecting left boost pressure sensor plug connection for cylinders 5-8
- Removing intake system
- Cleaning sealing surface on cylinder head
- Replacing seal
- Replacing the throttle valve seal
- Installing left intake system
- Attach the plug connection on the boost pressure sensor on the left for cylinders 5-8
- Join the plug connection at the knock sensor in front for cylinders 5-8
- Join the plug connection on the knock sensor in the rear for cylinders 5-8
- Fasten screw connection for left engine mounting bracket
- Fastening front screw connection for left engine mounting bracket
- Installing air conditioning compressor
- 11 61 068 Removing and installing/replacing the right intake plenum (750i 2016-2019)
- Remove right engine mounting bracket
- Disconnect the plug connection on the boost pressure sensor on the right
- Releasing positive battery cable
- Disconnecting plug connection for the coolant/oil sensor
- Removing transmission wiring harness
- Removing right intake system
- Cleaning sealing surface on cylinder head
- Replacing seal
- Replacing the throttle valve seal
- Installing right intake system
- Clipping in positive battery cable
- Clipping in transmission wiring harness
- Joining plug connection for the coolant/oil sensor
- Join the plug connection on the right boost pressure sensor
- Install right engine mounting bracket
- 11 61 730 Leakage test for the intake system (750i 2016-2019)
- 11 61 065 Removing and installing/replacing the left intake plenum (750i xDrive 2016-2022)
- 11 61 068 Removing and installing/replacing the right intake plenum (750i xDrive 2016-2022)
- 11 61 007 Removing and installing/replacing both intake pipes (M760i xDrive 2017-2022)
- 11 61 050 Removing and installing the intake plenum (M760i xDrive 2017-2022)
- 11 61 051 Replace intake plenum (M760i xDrive 2017-2022)
- 11 62 060 Remove and install/replace the exhaust manifold (cylinders 5-8) (750i 2016-2019)
- 11 62 065 Removing and installing/replacing exhaust manifold (cylinders 1-4) (750i 2016-2019)
Factory Service Tools
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When to See a Mechanic
Stop DIY work and contact a certified mechanic immediately if any of the following apply:
- • You smell fuel, burning insulation, or see smoke.
- • Brakes feel soft, pull hard to one side, or make grinding noises.
- • The engine overheats, stalls repeatedly, or misfires under load.
- • You are missing required tools, torque specs, or safe lifting equipment.
- • You are not confident in the next step or safety outcome.
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