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Keep Your 7.3L Powerstroke Running Strong: Why the Racor PFF4596 Fuel Filter Kit Belongs in Your Maintenance Routine If you drive or maintain a 1999–2003 Ford 7.3L Powerstroke or T444E diesel engine, you already know it’s a workhorse. But even the most reliable engines need clean fuel to perform at their best. That’s where the Racor PFF4596 Fuel Filter Element Service Kit comes in—a small investment that delivers big protection. What Is the Racor PFF4596? T …