The following topic thread, recently initiated on the Australian Kombi Club forum, illustrates the optional, larger-capacity, paper-element air filter, specified under M-Code 569, for the 1979 VW 2000 Type 2, for dusty conditions in Australia and South Africa:
Kombi Club Forums > Help and Assistance > Bay Tech Clinic > Engine & Transmission > air cleaner identification
http://forums.kombiclub.com/showthread.php?t=28937
There seems to be some difficulty, obtaining replacement air-filter elements in Australia, so I wonder about the current availability in South Africa!?!
Markings on the air-filter element:
VW-Audi Part No. 029 129 620 MHO Germany
MANN 45 159 54 104
Wartung nach Bedienungsanleitung
Patrone austauschen, wenn Patrone oder Dichtung beschädigt