Are Brake Pads, at least Front Pads, commonly available for E450? YES!!! I needed some when a caliper stuck out of town. Also YES, the warnings about calipers suddenly jamming ARE true... Anyhow, it worked out that the nearby chain store auto supply not only had them but could also confirm that they fit any E-Series if it was "Super Duty." Counterman did, however, confuse E-Series with F-Series and those brakes are NOT the same. I already had the wheel off and made a tracing of the caliper with bolt spacing dimensions so it was easy to get back on the right page. Store in fact had the Big Three: Pads, Hoses, Rebuilt Calipers. On hand. This is a big benefit to owning a Class C chassis from a popular manufacturer. I did the sticking corner (right front) on the campsite and the left front back at home. Then later I had the rotors re-surfaced and packed the bearings. The 21mm caliper bracket bolts were rusted in place and call for a lot of torque, part of why I waited... Recently I replaced the 2002 front axle with 2012 so I have a good 2002 setup looking for a home. Heavy for shipping, but if you need something PM me.
