At O'Reilly's today the MicroGard MGA46153 and the WIX 46153 had similar part numbers and both said Made In Mexico on the outside pleats. They looked identical side by side except the WIX had a higher number of pleats and they were yellow'ish. I asked the parts guy if WIX was making the air filters for MicroGard now and he said, "no, different company." shrug