ACDelco is likely best known by its well branded battery product. ACDelco is a General Motors automotive parts brand. General Motors', factory manufactured vehicle parts are sold under the ACDelco brand name. ACDelco also manufactures aftermarket parts for non-GM vehicles. The term Delco was coined from United Motors Corporation's association with the Dayton Engineering Laboratories Company. While the word AC was derived from Albert Champion's spark plug company - "AC Spark Plug".
Currently, the ACDelco brand features more than 90,000 auto parts. ACDelco offers a wide range of automotive maintenance parts like car batteries, oil/air filters, spark plugs, high performance wiper blades and brakes. They also have a product line for automotive repair parts such as alternators and radiators. ACDelco also offers advanced automotive heating and cooling components. ACDelco manufactures Original Equipment auto parts for GM vehicles. ACDelco also specializes in aftermarket parts and products that meet or exceed most GM vehicle equipment standards.

Currently ACDelco parts are available at more than 28,700 locations worldwide. The company celebrated its 100th year of successful operation in 2017.