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.
2016 BMW M3 Standard TransFACTORY OEM SERVICE PROCEDURE
1111 Engine Block
11 11 ENGINE BLOCK - TIGHTENING TORQUE SPECIFICATION
| Type | Thread | Tightening specifications | Dimension | |
|---|---|---|---|---|
| 1AZ Main bearing bolts (steel bolts 10.9) | S55 | M 10x100 | Replace screws Observe tightening sequence |
|
| Jointing torque | 20 Nm | |||
| Angle of rotation | 70° | |||
| 2AZ Bedplate Aluminium screws. |
S55 | M 10x27 | Replace screws Thread repairs exclusively with AI Helicoil. Jointing torque and angle of rotation must be observed without fail. |
|
| Jointing torque | 15 Nm | |||
| Angle of rotation | 45° | |||
| 3AZ Bedplate Aluminium screws. |
S55 | M8x37 | Replace screws Thread repairs exclusively with AI Helicoil. Jointing torque and angle of rotation must be observed without fail. |
|
| Jointing torque | 8 Nm | |||
| Angle of rotation | 90° | |||
| 4AZ Bedplate | S55 | M10x41 | Replace screws Thread repairs exclusively with AI Helicoil. Jointing torque and angle of rotation must be observed without fail. Note: Aluminium screws are marked with blue color |
|
| Jointing torque | 15 Nm | |||
| Angle of rotation | 90° | |||
| 5AZ Oil spray nozzles to engine block | S55 | Hollow bolt | 12 Nm | |
| 6AZ Screw plug, gear case upper section | S55 | M22x1.5 | Replace screw with sealing ring | 50 Nm |
| 7AZ Screw plug, gear case lower section | S55 | M 16x1.5 | Replace screw with sealing ring | 27 Nm |
| 8AZ Transmission cover plate to crankcase | S55 | M6x16 | Replace screws Thread repairs exclusively with AI Helicoil. Jointing torque and angle of rotation must be observed without fail. |
|
| Jointing torque | 4 Nm | |||
| Angle of rotation | 90° |
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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