ngk

NGK CMR7H spark plug 10mm thread, 1/2" reach, 5/8" hex, gasket seat, resistor plug. Also fits billet head kits for scooters and pocketbikes.  Zeno...

High-performance NGK IRIDIUM CR7HIX spark plug. 10mm threads, 1/2" reach, 5/8" hex, gasket seat, resistor plug.  Fits many other hobby engines as ...