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By paul2748 - 4 Years Ago While I usually use Autolite 46's in my Y's, a friend gave me some Motorcraft BF 82's.  Are the 82's  the equivalent of the 46's? If not, are they still a good plug for my Y's? Thanks By Sandbird - 4 Years Ago Autolite cross reference  shows that their 46 is the same as the Motorcraft BF 82.