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.
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HOMESERVICE MANUALSBMW2018740IREPAIR AND DIAGNOSISENGINE MECHANICALMECHANICALENGINE - CYLINDER HEAD/VALVE COVER (2 OF 6) - REPAIR (G12)
2018 BMW 740i
Engine - Cylinder Head/Valve Cover (2 Of 6) - Repair (G12)
2018 BMW 740iSECTION Engine - Cylinder Head/Valve Cover (2 Of 6) - Repair (G12)
- 11 12 Cylinder Head, Valve Cover
- 11 12 001 Replace the cylinder head cover (740e xDrive PHEV 2017-2019)
- 11 12 070 Remove and install/replace acoustic cover (740e xDrive PHEV 2017-2019)
- 11 12 100 Removing and installing cylinder head (740e xDrive PHEV 2017-2019)
- 11 12 101 Replace cylinder head gasket (740e xDrive PHEV 2017-2019)
- 11 12 154 Disassemble and assemble cylinder head (740e xDrive PHEV 2017-2019)
- 11 12 161 replace cylinder head (740e xDrive PHEV 2017-2019)
- 11 12 729 Checking cylinder head for watertightness (Cylinder head disassembled) (740e xDrive PHEV 2017-2019)
- 11 12 000 Removing and installing/sealing cylinder head cover (745e xDrive PHEV 2020-2022)
- 11 12 001 Replace the cylinder head cover (745e xDrive PHEV 2020-2022)
- 11 12 070 Remove and install/replace acoustic cover (745e xDrive PHEV 2020-2022)
- 11 12 100 Removing and installing cylinder head (745e xDrive PHEV 2020-2022)
- 11 12 101 Replace cylinder head gasket (745e xDrive PHEV 2020-2022)
- 11 12 161 replace cylinder head (745e xDrive PHEV 2020-2022)
- Removing the cylinder head
- Removing the turbocharger (cylinder head removed)
- Removing the cylinder head gasket
- Seal the oil duct
- Clean sealing surfaces
- Installing the cylinder head gasket
- Replacing the cylinder head (remounting components)
- Installing the turbocharger (cylinder head removed)
- Installing the cylinder head
- 11 12 411 Seal/replace screw plugs of cylinder head (745e xDrive PHEV 2020-2022)
- 11 12 670 Clean intake ports (after vehicle diagnosis) (745e xDrive PHEV 2020-2022)
- 11 12 005 Removing and installing/sealing the left cylinder head cover (750i 2016-2019)
- Remove heat shield on the cylinder head cover on left at cylinders 5 to 8
- Loosen the plug connection on the VANOS central valve, exhaust side, cylinders 5 to 8
- Loosening the plug connection on the VANOS central valve, intake side, cylinders 5 to 8
- Removing the actuator of the variable camshaft timing control
- Screw connection of cylinder head cover, left cylinders 5 to 8
- Replace the cylinder head cover gasket
- Attaching cylinder head cover of cylinders 5 to 8
- Cylinder head cover screw connection cylinder 5 to 8 difficult to access
- Installing heat shield on the cylinder head cover cylinders 5 to 8
- Install heat shield of the high pressure pump of cylinder head cover at left for cylinders 5 to 8
- Installing the VANOS actuator
- 11 12 006 Removing and installing/sealing right cylinder head cover (750i 2016-2019)
- Remove the heat shield on the cylinder head cover on the right at cylinders 1 to 4
- Left cylinder head cover screw connection, cylinder 1-4
- Replace the cylinder head cover gasket
- Replacing the O-ring for vacuum pump cylinders 1 through 4
- Fasten cylinder head cover of cylinders 1 to 4
- Installing the heat shield at the right cylinder head cover cylinders 1 to 4
- Install heat shield, high pressure pump, right cylinder head cover, cylinder 1 to 4
- Installing the VANOS actuator
- 11 12 070 Remove and install/replace acoustic cover (750i 2016-2019)
RENDER: 1.0x
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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.