How do I get my stock radio code?

[Hunnicuttz]

I had put an aftermarket head unit in my 1994 318i but now I put my stock unit back in and do not have the code. How do I go about getting the code? Is there a phone number I can call to get it or anything like that?
-Matt

[bmwm3p0wer]

happens the same thing to me before... u have to call or go to the bmw dealer and give the serial number from the radio, and they give to u the code,u dont pay nothing for this service,its easy..goodluck!