Here is a list of part numbers I have collected for various items.
Use the Search Function at the top of the excel file to search by Part Number or Description
Woodnthings8 Superduty Part Number File (Opens in excel)
O-Ring Information (O-Rings West)
Here are a few websites where you can check part numbers out and get prices
OEM Parts:
Ford to International Parts Cross Reference List
Tousley Ford Parts Depot (Ford Dealer that offers discounted prices over many local dealers, good service too!)
Aftermarket/Performance Parts:
Riffraff Diesel.com (awesome prices and great service)
Diesel O-rings.com (lots of Powerstroke Specialty O-Rings and seals)