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NGK Stock Heat Range Iridium Spark Plugs 06-14 WRX / 04-17 STI NGK 2309 1 Step Colder Iridium Spark Plug 06-14 WRX / 04-16 STI Denso 2 Step Colder Spark Plugs 04-16 STI
Set of 4 Plugs Ideal for increased boost. High horsepower applications.
OEM Subaru Ignition Coil Pack 11-14 WRX / 04-15 STI Grimmspeed Lightweight Battery Mount Kit 08-17 WRX / 08-17 STI Subrau Ignition Systems
OEM ignition coil. 2 Year Odyssey Warranty the purchased through Defined Performance. Compatible with all OEM components
Compatible with OBD-II (On-Board-Diagnostics)