Cost to have a spark plug thread insert installed?
Friend has a 99 740i and he removed the threads with one spark plug so needs a fix.
The dealer refused to consider an insert, or Heli-Coil and BMW does not authorize this, and insists on a new head being installed, but they want almost $9000 to do the job saying that using a thread repair can cause serious damage as the spark plug will not transfer heat to the head properly, and other problems.
I told him I would ask around, and none of the import shops in town would take responsibility for, or warranty the job either.
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