924 2.0 Turbo 931 07/1979 - 06/1980 M31.02. 924 2.0 Turbo 931 07/1978 - 06/1980 M31.01. Repair kit for a four cylinder alloy Bosch K-Jetronic Fuel Distributor. This is probably because of modern fuel additives & the introduction of ethanol into fuel.
