Just finished cutting all the filters apart. It looks like the PF53, Super Tech (Wal Mart) are made by the same company. The can, base plate, spring, filter media and rubber seal all look to be the same. The Mopar and Motorcraft look to be made by the same company. But, the Motorcraft filter has deflector washer under the silcone seal and a larger spring. The Mopar filter has plain rubber seal (smooth no ribs) and no return holes in the top of the filter media cover. All the filters have from 50 to 56 pleates of filter media. The Motorcraft has 69 pleates.
I think the Motorcraft FL 400s is the best choice as a replacement so far. This filter will fit and provides about 125% more filter media do to size and number pleates.
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