M1730 6-Cylinder Ignition Harness for Continental Engineswith Bendix S6-20 & S6-200 Magnetos & 3/4-20 Spark PlugsFit Most Models: O-470, IO-470, TSIO-470, IO-520, TSIO-520Call for applications not listed or If you are unsure which harness you require.Download the Champion Slick Harness Application for 5/8" PlugsDownload the Champion Slick Harness Application for 3/4"