AC Delco was responsible for so many automotove advancements, in some cases not the first to use a technology, but the first to bring it to OEM/mass market or first to make it themselves (for instance, I think Chrysler was the first to ... Just some things that come to mind in the 70's were the first sealed/maintenance-free battery, and the HEI electronic ignition. In the 80's it was the distributorless ignition and the successful skirt of the Bosch fuel injector patents ...
