Replacement Honda Spark Plugs Fits GX120 GX160 GX200 GX240 GX270 GX340 GX390 (1) Fits GX120 GX160 GX200 GX240 GX270 GX340 GX390 GX620 Solid copper core for greater spark Longer insulator nose prevents fouling Corrugated ribs on insulator prevents flashover Please see compatibility chart. Identical in appearance and operation to your OEM