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.
2023 BMW M3 Base, Automatic TransFACTORY OEM SERVICE PROCEDURE
Engine - Cylinder Head - Repair M3 (G80)
- 11 00 Engine Assembly
- Handling components after flood damage (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)
- Overview of consumables (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)
- Motor oil consumption measurement (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)
- 11 00 598 Remove and install the engine on the front axle (M3 base)
- 11 00 670 Moving the engine to the installation position (M3 base, M3 Competition)
- 11 00 598 Remove and install the engine on the front axle (M3 Competition)
- 11 00 598 Remove and install the engine on the front axle (M3 Competition M xDrive, M3 CS)
- 11 00 670 Moving the engine to the installation position (M3 Competition M xDrive, M3 CS)
- 11 12 Cylinder Head
- 11 12 000 Removing and installing/sealing cylinder head cover (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)
- 11 12 001 Replace the cylinder head cover (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)
- 11 12 042 Remove and install/replace oil return line in cylinder head (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)
- 11 12 070 Remove and install/replace acoustic cover (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)
- 11 12 100 Removing and installing cylinder head (M3 base, M3 Competition)
- 11 12 101 Replace cylinder head gasket (M3 base, M3 Competition)
- 11 12 161 replace cylinder head (M3 base, M3 Competition)
- 11 12 502 Disassemble and assemble cylinder head (cylinder head removed) (without removal of valves) (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)
- Removing both exhaust turbochargers for cylinders 1 to 6 (cylinder head removed)
- Removing the heat shield from the cylinder head
- Removing the trim strip for the exhaust turbocharger for the cylinders 4 to 6 on the cylinder head
- Removing the trim strip for the exhaust turbocharger for cylinders 1 to 3 on the cylinder head
- Mounting the cylinder head on the assembly jig
- Adjusting the eccentric shaft to the minimum lift (cylinder head removed)
- Removing the torsion springs (cylinder head removed)
- Removing all gates
- Removing all intermediate levers
- Removing the exhaust camshaft (cylinder head removed)
- Removing the intake camshaft (cylinder head removed)
- Remove the servomotor for the eccentric shaft (cylinder head removed)
- Removing the eccentric shaft (cylinder head removed)
- Remove all roller cam followers
- Removing all hydraulic valve clearance compensating elements
- Remove all valve springs
- Remove valve stem seals
- Remove all valves
- Install all valves
- Installing valve stem seals
- Install all valve springs
- Installing all hydraulic valve clearance compensating elements
- Install all roller cam followers
- Install exhaust camshaft (cylinder head removed)
- Installing the eccentric shaft (cylinder head removed)
- Installing the servomotor for the eccentric shaft (cylinder head removed)
- Installing the intake camshaft (cylinder head removed)
- Checking the intermediate lever classification
- Installing all intermediate levers
- Installing all gates
- Checking the position of the intake camshaft (cylinder head removed)
- Install the torsion springs (cylinder head removed)
- Removing the cylinder head from the assembly jig
- Installing the trim strip for the exhaust turbocharger for the cylinders 1 to 3 on the cylinder head
- Installing the trim strip for the exhaust turbocharger for the cylinders 4 to 6 on the cylinder head
- Installing the heat shield on the cylinder head
- Installing both exhaust turbochargers for cylinders 1 to 6 (cylinder head removed)
- 11 12 729 Checking cylinder head for watertightness (Cylinder head disassembled) (M3 base, M3 Competition, M3 Competition M xDrive, M3 CS)
- 11 12 100 Removing and installing cylinder head (M3 Competition M xDrive, M3 CS)
- 11 12 101 Replace cylinder head gasket (M3 Competition M xDrive, M3 CS)
- 11 12 161 replace cylinder head (M3 Competition M xDrive, M3 CS)
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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