South African High Commission (in respective country). A valid visa, if required.
If the vehicle is still being financed, carry a letter of authority from the bank (must include dates of travel) together with the vehicle license papers.
Carnet de Passage: Highly recommended for cars registered outside of the Common Customs Area (Lesotho, Swaziland, Namibia and Botswana), otherwise duties are payable to SARS on a SAD500 form; clearing agent will be required. Carnet should be obtained from the local motoring club.