NGK Iridium Spark Plug - SILKFR8A6 [Suit Subaru Outback, WRX FA24E 2.4ltr]
NGK Iridium Spark Plug - SILKFR8A6 [Suit Subaru Outback, WRX FA24E 2.4ltr] Hex Size (mm) 14 Thread Diameter (mm) 12 Thread Reach (mm) 26.5 Seat Type Gasket Resistor / Non-Resistor Resistor Heat Range 8 Gap Size (mm) 0.6 Spark Plug Socket (mm) 14