Delco 4 Cylinder Spark Plug Wire Set | United Ignition Wire 105Delco 4 Cylinder Spark Plug Wire Set United Ignition Wire 105 8mm ignition wire set fits GM 4 cylinder marine engines with Delco conventional ignition distributors. Delco 4 cylinder conventional ignition marine spark plug wire set For Crusader 153 model 4 cylinder engines from 1961 69 with Delco point type distributors For Mercruiser 60 thru 140 model 4 cylinder engines from 1963 89 with Delco point type distributors For OMC 88, 90, 100 thru 140 model