Identical to Magneti Marelli S147.Fits all Fiat DOHC engines with distributor sidewise at the engine block.Fiat 124 Coupe/Spider 1966-75Fiat 125 Special 1968-75Fiat 131 1974-82Fiat 132 1974-82Fiat ArgentaLancia Beta 1973-82Lancia Fulvia 1600 OE: 4171158 - 4258028 - 4258694 - 4272875 - 4310011