911 3.0 SC POR 14 08/1979 - 08/1983 930.16/17. 911 3.0 SC POR 191 09/1979 - 07/1980 930.07/08. Repair kit for a six cylinder Cast Iron (adjustable) Bosch K-Jetronic Fuel Distributor. This is probably because of modern fuel additives & the introduction of ethanol into fuel.
