One of the neat things about OEM-spec filters. Although it's made by Purolator, it's done to Ford's specifications. Same thing with the Mopar MO-090 filter. The generic 14670 equivalent is just like any other Purolator Classic (still a good filter), but the MO-090 has a base-end coil spring bypass, just like the Motorcraft filters. Is it worth paying a few extra dollars for? I think so (especially in this case; you get the sillycone ADBV).