I am the parts director at a dodge dealer. Do you have the last 9 digits of the VIN from the truck the pump came from or a part number off the pump itself? I can tell you exactly what you have if you can get me that information. skauto is right, in 2007 that truck came with both the 5.9l and the 6.7l diesel motor.
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Chris
As close to "Normal" as I can get...