11 12 Cylinder Head With Cover

WARNING: This page does not describe the selected car, but rather 6 other vehicles, including the 2013 BMW 128i, 2012 BMW 128i, 2011 BMW 128i, 2010 BMW 128i, and 2009 BMW 128i. However, it is still accessible from the selected car via links, so may be relevant.

CYLINDER HEAD PARTS TIGHTENING SPECIFICATION

	Type	thread	Tightening Specification
11AZ Cylinder head cover	All	M6	10 Nm
	All	M7	15 Nm
	M21	M8	15 Nm
12AZ Oil trap to cylinder head cover	M21	M8	17 Nm
13AZ Timing case to cylinder head	All	M7	15 Nm
	All	M8	20 Nm
14AZ Plug for oil channel (micro encapsulated)	M47 / M57	M12 x 1.5	20 Nm
15AZ Vent plugs to cylinder head (coolant)	M67		2 Nm

CYLINDER HEAD PARTS TIGHTENING SPECIFICATION

	Type	Thread	Description	Tightening Specification
1AZ Cylinder head bolts	N51	M10x125	Replace screws
			Jointing torque	30 Nm
			1st angle of rotation	90 °
			2. Angle of rotation	90 °
			3. Angle of rotation	45 °
2AZ Cylinder head bolts	N51	M9x95 M9x125	Replace screws
			Jointing torque	30 Nm
			1st angle of rotation	90 °
			2. Angle of rotation	omitted
			3. Angle of rotation	45 °
3AZ Cylinder head bolts	N51	M9x30	Replace screws
			Jointing torque	10 Nm
			1st angle of rotation	90 °
4AZ Cylinder head bolts	N51	M9x70	Replace screws
			Jointing torque	10 Nm
			1st angle of rotation	135 °

5AZ Lifting eye to cylinder head	N51	M8x20		19 Nm
6AZ Ignition coil cover to cylinder head cover	N51	M6x20		8 Nm
7AZ Bearing strips to cylinder head	N51	M7x70
			Jointing torque	8 Nm
			1st angle of rotation	60 °

8AZ E-engine to cylinder head cover	N51	M7x70
			Jointing torque	4 Nm
			1st angle of rotation	90 °
			1st angle of rotation	60 °
9AZ Cylinder head cover to cylinder head	N51	M7 M7x46 M7x36		9 Nm

10AZ Camshaft bearing cap to cylinder head	N51	M6x30		9 Nm

11AZ Towing lug to cylinder head	N51			30 Nm

12AZ Plug, SLS channel	N51	M20x1.5	Plug	80 Nm