COBB Spark Plugs EJ25 2004-2021 WRX, STI, Legacy, Forester, Outback | D44700

Fitment Information:

• Subaru STI 2004-2021
• Subaru WRX 2006-2014
• Subaru Legcacy GT 2005-2009
• Subaru Forester XT 2004-2013
• Subaru Outback XT 2005-2009

This is the factory spark plug as installed in the 2018 Subaru WRX STI Type RA and 2019 Subaru WRX STI. The main differences are a heat range that is one-step cooler as well as a slightly tighter gap than previous factory spark plugs. These serve as a factory replacement for the 2018 STI Type RA and 2019 STI and a great upgrade for modified 2.5L Turbocharged Subarus.

Subaru 2.5L Spark Plugs WRX, STI, Legacy GT, Forester XT

• Laser Welded Iridium Tipped Center Electrode
• Trivalent Metal Plating
• .024 (.6mm) Gap
• Heat Range : 7
• Sold as Set of 4