Find the Transmission Filters you need when flushing the transmission in your 1999-2003 Ford 7.3L Powerstroke. For vehicles with an internal of external spin-on filter, the replacements offered are designed to meet or exceed the factory specifications. There are filters for the stock pan as well as filters for deep transmission pans. AFE, BD-Power, and Mag Hytec are just some of the manufacturers that are available.