NGK Spark Plugs (U.S.A.) may have a hand in getting your car started. The company is the American manufacturing and distribution arm of Japan-based spark plug manufacturer NGK SPARK PLUG. It has manufacturing and distribution facilities in California, Illinois, and West Virgina. NGK Spark Plugs (U.S.A.) makes not only its namesake product, but also oxygen sensors that control an automobile's fuel and ignition systems for lower emissions and better fuel economy, as well as spark plug wire sets. The subsidiary traces its historical roots back to 1966.