Denso Iridium Power Plugs Two Step Colder Subaru 2.5L Turbo

Description:
DENSOs Iridium Long Life plug is fast becoming the standard for todays high-tech engines. The properties of DENSOs patented Iridium alloy have broken through the spark plug technology barrier. Employing a revolutionary new 360 laser welding process, DENSO has created a spark plug unlike anything on the market today. Designed for durability under the most extreme conditions, DENSOs patented Iridium alloy is six times harder and eight times stronger than conventional platinum and can handle temperatures in excess of 4,000F.

Applications:
2006-2007 WRX
2004-2007 STI
2008-2014 WRX
2008-2014 STI
2015-2021 STI