8L-1Z78-21452-AA is front passenger side door
8L-1Z78-21453-AA is front driver side door with keyless entry keypad, 7L1Z7821453BA is the same part without keypad
Not a common replacement part (like bumpers, fenders, lights), so no aftermarket.
Considering the list prices, you might try a body shop to refinish what items you do have rather than replace.