The NGK C7HSA (Stock No. 4629) is a standard nickel-alloy spark plug designed for 4-stroke small engines, including 50cc-150cc scooters, ATVs, and motorcycles. It features a 10mm thread, 12.7mm (1/2″) reach, and a 16mm (5/8″) hex, with a copper core for superior heat dissipation, anti-fouling, and consistent ignition.
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