Subaru WRX / WRX STI 2009, Direct Ignition Coil by Karlyn STI®. STI. 4 Required per Vehicle. The ignition coil is one of the most important part in the ignition system. Ignition Coil aimed to provide the needed high voltage and ignition energy for generating the high voltage sparks at the spark plug.
- Place directly on the spark plug
- High temperature resistant
- Made of High Quality Materials