Mishimoto 04-10 Subaru WRX/STI Ignition Coil - 4-Pack - MMIG-WRX-0404 US Car/EV6 to Jetronic/EV1 Plug in one side to

Plug in one side to your OBD-1 ECU and the other side into your factory engine harness

Add Skunk2 Pro Series or Alpha Series Valve Springs and Titanium Retainers for ultimate valvetrain stability

The proven formula contains special surfactants and lubrication agents that allow quick and easy cleaning without scratching or ruining the finish of vehicle components

3000902 is a performance street disc and the most popular disc purchased

Mishimoto 04-10 Subaru WRX/STI Ignition Coil - 4-Pack - MMIG-WRX-0404 US Car/EV6 to Jetronic/EV1 Plug in one side toThe basic requirements for a properly running engine are fuel, air, compression, and spark. Before increasing your engine's power, it's wise to ensure all maintenance is up to date and these processes are performing as intended. A weak spark from your ignition system can result in misfiring, rough idling, poor gas mileage, and damage to your catalytic converter, all of which hinder performance. Mishimoto ignition coils aim to provide high quality