For 4 Cyl. Models W/ 12 Volt Negative Ground Systems Or 6 Volt Systems Converted To 12 Volt Negative Ground Systems Only. Dim A (1): Never Change Points Again. Dim B (2): Easy Installation No Complicated Wiring Fits Entirely Inside Distributor. Dim C (3): Increases Spark Plug Life Horsepower Improves Fuel Economy. Dim D (4): Precision Engineered Solid State Electronics. Dim E (5): For Delco Distributor Part #: 1885368; Case-Ih Skid Steer Loader 420 (W/ Delco Distributor)
