18 31 Exhaust system
WARNING: This page does not describe the selected car, but rather 24 other vehicles, including the 2015 BMW Alpina B7L xDrive, 2015 BMW Alpina B7 xDrive, 2015 BMW 750i xDrive, 2015 BMW 750i, and 2015 BMW 750Li xDrive. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUE SPECIFICATIONS - EXHAUST SYSTEM
| Type | Thread | Tightening specifications | Dimension | |
|---|---|---|---|---|
| 1AZ Exhaust system to catalytic converter | N63 B44 O 0 | nut M8 | 20 Nm | |
| N63 B40 O 1 / N63 B44 O 1 | Clamp | 55 Nm | ||
| 2AZ Exhaust manifold to cylinder head | N63 B44 O 0 | nut M8 | 15 Nm | |
| 3AZ Heat shield to cylinder head | N63 B44 O 0 / N63 B40 O 1 / N63 B44 O 1 | M6 | 10 Nm | |
| 4AZ Clamp to exhaust manifold | N63 B44 O 0 / N63 B40 O 1 / N63 B44 O 1 | M8 | 23 Nm |