NGK Ruthenium HX Spark Plugs (Box of 4) LKAR7AHX-S - Subaru FB25 / Multiple Applications Subaru-Forester-2021 Double the thickness of the

Double the thickness of the standard OEM gaskets for superior durability and performance

improving both acceleration and braking performance by reducing unsprung weight

All components included are BRAND NEW and there is NEVER A CORE CHARGE required

The factory turbo inlet on the GR WRX is a known restriction — a plastic piece designed around packaging constraints rather than airflow efficiency

NGK Ruthenium HX Spark Plugs (Box of 4) LKAR7AHX-S - Subaru FB25 / Multiple Applications Subaru-Forester-2021 Double the thickness of theNGK 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