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550i Automatic
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Engine Electrical System - Tightening Torques
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Ignition Wires, Spark Plugs
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12 12 Spark Plugs
12 12 Spark Plugs
SPARK PLUGS - TIGHTENING TORQUE SPECIFICATION
Type
Thread
Tightening specification
Measure
1AZ Spark plugs (ungreased)
All
M 12x1.25
23 ± 3 Nm
All
M14x1.25
30 ± 3 Nm