NGK 2309 One Step Colder Spark Plugs (Set of 4) - Subaru WRX 2006-2014 / STi 2004-2021 (+Multiple Fitments) Mitsubishi-Evolution-VIII-2004 You will need your factory

You will need your factory brackets and sliders for these to work

We can fix that

- Larger duct diameters

The turbocharger is one of the hottest components in your engine bay and can have some really negative effects on its surroundings

NGK 2309 One Step Colder Spark Plugs (Set of 4) - Subaru WRX 2006-2014 / STi 2004-2021 (+Multiple Fitments) Mitsubishi-Evolution-VIII-2004 You will need your factoryNGK IX Iridium Series plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark Iridium alloy has an extremely high melting point, perfect for today's high tech, high performance engines Trivalent metal plating provides superior anti corrosion and anti seizing properties Corrugated ribs prevent flashover Pure alumina silicate ceramic insulator, provides superior