Hi Kenneth,
Some of the lenses are available through the dealer. The others that are not and the entire light has to be replaced, there are companies that come out to you and can usually repair some scratches and clear out any cloudiness. Often the dealership service department will use a company like this for their own used cars rather than having to replace the light. The service advisors will usually give you the name of who they use in your area if you call.
Technician
ase certified, mitsubishi certified, kia certified and landrover certified technician