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There is a special socket you can buy. It is actually for Ford F-150 truck spark plugs. It is a 9/16" size. It is most likly not sold locally. You would have to hunt down a Cornwell, Matco, Mac, or Snapon tool truck. Part number is 6900 spark plug socket. You can Google it and click on Shopping and should be able to purchase it online. I have this socket and used it on my xD. It fits and works perfectly.
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