Description: The Subaru Ignition Coil (22433AA580) is a factory-spec coil-on-plug ignition coil for 2004–2010 Subaru Forester (without turbo) and Impreza 2.5L federal-emissions models. It transforms battery voltage into the high-voltage spark required for combustion at the correct timing. A genuine Subaru OEM coil built to original secondary voltage output and primary resistance specifications for consistent, factory-matched ignition performance.