Oh yeah there is. And I know so.
OE parts are manufactured by the OEM companies per OE specs. Sometimes OEM companies designed the parts also per OE specs.
Only OE parts are installed in the production cars. The same OE parts are sold through the dealers. Dealers don't sell OEM, Aftermarket, but OE parts only.
No OEM and/or aftermarket parts are installed in the production cars. NONE what so ever.
Go to the dealer and check under the hood of a brand new car, see if Autozone brand air, fuel, and oil filters, battery, brake pads etc installed in the car.