Powerstroke 7.3 has THREE different sizes of serpentine belts available and none of them are interchangeable. " (Length difference is 0.4" or almost 1/2"). This belt is 122.3" long for a single alternator, but you can rest assured that it is the correct replacement for yours 7.3 is by simply holding it next to the one you have remove and compare the P/N to the old belt. This GATES #K081223HD is a replacement for Motorcraft #1C2Z-8620-NA.
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