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Section 344 (Engine Electrical System - Tightening Torques (N52))
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Spark Plugs
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12 12 Spark Plugs
12 12 Spark Plugs
WARNING:
This page is about a different car, the 2011 BMW Z4, 2010 BMW Z4, and 2009 BMW Z4. However, it is still accessible from the selected car via links, so may be relevant.
TIGHTENING TORQUE SPECIFICATION - SPARK PLUGS
Type
Thread
Tightening specification
Measure
1AZ
Spark plugs (ungreased)
All
M12x1.25
23 ± 3 Nm
All
M14x1.25
30 ± 3 Nm