The aFe ProGuard D2 is a replacement fuel filter for the 1998-2003 Ford diesel truck with the 7.3L V8 turbo diesel (Power Stroke) engine. It is a fuel-side filter, so it sits in the fuel supply path that feeds the injection system. Choosing an aFe unit over a generic or unbranded filter gives you a known brand and a product line built specifically for this application. Look for the ProGuard D2 name and part number 44-FF007 so you get the correct fitment for your truck's model years and engine.
Fuel filter replacement is one of the most common maintenance tasks on these trucks, and owners often search for a 7.3 Power Stroke fuel filter swap, 98-03 Ford diesel fuel filter replacement, or ProGuard D2 install. Confirm the fitment, fittings, and filter orientation against the manufacturer's instructions before you start. Keep fuel system cleanliness in mind during the swap, and check for leaks at the filter once the system is back under pressure.
