The point is there is a lot of ambiguity in this particular area of aftermarket part suppliers. The less expensive part may in fact be manufactured USA, OTOH they may be made in China yet are produced using USA casts. And depending on inventory some may be mixed and matched at the distributorship.
Notice that NAPA also carries the BECK/ARNLEY brand noted by "BA" preceding each part number. BA however is a distributor, not a manufacturer and I believe their parent company is WorldParts.
I just purchased a pair of discs for the Mercedes. The packaging was "Balo", which is what I ordered... yet "Balo" is not stamped on the disc - only "Germany". If they gave me the "ATE" brand, i wouldn't know it.
These are the differences noted on the NAPA website:
Whether the differences are remakably substantial, is difficult to say, but my leaning is that there isn't. I would have to handle and inspect each one individually.
Now, OEM is the exception, you know exactly what you've ordered. Same with the specialty aftermarket discs that are slotted and drilled.
These aren't high speed vehicles.
$23.49
Attributes:
# of Bolts / Holes:6
Brake Rotor Type:Rotor
Discard Thickness:.748"
Features & Benefits:Meets Original Equipment Fit
Form
& Function.
Height:1.885"
Outside Diameter:11.880"
Type of Packaging:Box
Vented / Solid:Vented
$81.49
Attributes:
# of Bolt Holes:6
# of Bolts / Holes:6
Bolt Circle Dimensions:5.5"
Brake Rotor Type:Rotor
Diameter:11 7/8"
Discard Thickness:.748"
Features & Benefits:Application Engineered to Meet or Exceed Original Equipment Design & Quality.
Features & Benefits - 2:Manufactured with Original Equipment Vane Configuration.
Height:1.885"
Outside Diameter:11.880"
Type of Packaging:Box
Vented / Solid:Vented
.