A stock heat range, laser iridium plug for the Subaru WRX and Forester XT FA20DIT models made by NGK, model number ILKAR8H6. Plugs come gapped at 0.027" and feature a very thin, iridium center electrode. Replacing spark plugs can be a great way to restore power or get your engine running the way it should be if the old plugs are worn or fouled. Plugs are SOLD INDIVIDUALLY. Please order a quantity of 4 to replace all sparks plugs in the Subaru WRX or Forester XT.