I installed the WJB heavy duty assemblies in Feb of 2019. Have been good for me.
Part: WA515050HD $60.79 ea. (10% Instant rebate right now, so about $55 each)
https://www.rockauto.com/en/catalog/ford,2004,explorer,4.0l+v6,1427767,brake+&+wheel+hub,wheel+bearing+&+hub,1636