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What is your question?
WHAT IS THE MOST PROPER SPARK PLUG GAP FOR THE 4.2 L V-6
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.054!gap is not adjustable on certain brands,if they are .052-.056 they are good to go!put motorcraft plugs in it!!part#SP-504 platinum finewire.don't try to gap em,unless you have the wire gauge!or you will have bad day.part#25026=$3.00