NGK Ruthenium HX Spark Plug Box of 4 (FR6BHX-S) - 2002-2005 Subaru WRX PDM_brake-kits-front increases oil capacity up to

increases oil capacity up to 30% over OEM

and they are effective on your purpose-built race car

Replaces the 5

IMPORTANT NOTE:  This item is CARB Restricted

NGK Ruthenium HX Spark Plug Box of 4 (FR6BHX-S) - 2002-2005 Subaru WRX PDM_brake-kits-front increases oil capacity up toNGK Ruthenium HX High Ignitability spark plugs are the best in class plug for todays modern vehicles. Patented Ruthenium technology offers the most advance tip technology and delivers the highest performance and life expectancy. Created from advanced OE technology as a high ignitability plug; Ruthenium HX spark plugs come with patented, specialized OEM DFE and PSPE tip designs. NGK Ruthenium HX High Ignitability spark plugs provide a more complete