Spark Plug Torque

Torque Specification

New aluminum heads tighten the spark plugs to 20 Nm (15 lb ft).
Used aluminum heads tighten the spark plugs to 15 Nm (11 lb ft).

New iron heads, tighten the spark plugs to 30 Nm (22 lb ft).
Used iron heads tighten the spark plugs to 15 Nm (11 lb ft).