ACDelco Iridium Spark Plug

ACDelco is a premier global automotive parts brand with a heritage spanning over a century. Originally established as United Motors Corporation by William C. Durant in 1916, it was acquired by General Motors (GM) in 1918. The current name, ACDelco, was finalized in 1995 after the merger of AC Spark Plug and United Delco. The "AC" in the brand name honors Albert Champion, a bicycle racer and spark plug pioneer, while "Delco" stands for the Dayton Engineering Laboratories Company.

As the exclusive original equipment parts provider for General Motors vehicles (including Chevrolet, GMC, Buick, and Cadillac), ACDelco spark plugs are engineered to rigorous manufacturer standards. While the brand is headquartered in Michigan, USA, its manufacturing operations are global to serve an international market. Production occurs across multiple countries, including the United States, China, Mexico, and Japan (often through partnerships with specialist manufacturers like NGK or Denso), ensuring high availability and technological sophistication.

Today, ACDelco remains a wholly-owned subsidiary of General Motors. It continues to be a leader in the global automotive aftermarket, producing over 90,000 different parts across dozens of product lines, maintaining its reputation for durability and precision engineering.