NGK’s patented V-groove spark plugs – The principle is technically simple but very effective. V-groove is situated in the tip of the center electrode. This ensures the spark to occur at the periphery of the electrode where it is easier to ignite the air/fuel mixture because of the formation of the bigger flame core. In addition, the voltage required to produce a spark is reduced. These two features give the benefit of improved ignitability.

NGK V-groove spark plugs offer perfect ignition of the air/fuel mixture especially in modern low emission lean-burn engines, even under extreme operating conditions.