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17 00 Coolant S85

WARNING: This page is about a different car, the 2010 BMW M6, 2009 BMW M6, 2008 BMW M6, 2007 BMW M6, and 2006 BMW M6. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUE SPECIFICATION - COOLANT

  Type Thread Measure
1AZ Coolant drain plug to crankcase S85 M10x1 13 ± 2 Nm
S54 M14x1.5 30 Nm
2AZ Screw plug for
Water jacket to cylinder head
S85 M26x1.5 50 Nm
3AZ Vent connection, cooling circuit S85 M10x1 13 Nm
4AZ Coolant drain plug to radiator S85   2.5 Nm