NGK BR7ES Equivalent. DENSO's patented U-Groove spark plug enables
complete combustion by allowing the spark to fill the gap created by the
U shape. The ball of fire created in the U-Groove develops a larger and
hotter flash front that virtually eliminates excessive fouling and
erratic starts caused by poor fuel mixtures.
100% PRE-FIRED — Assures the highest quality possible.
COPPER-GLASS SEAL — Bonds the center
electrode and insulator together for a gas-tight seal. Maintains proper
heat and excludes hot combustion gases.
FIVE-RIB DESIGN — Prevents flashover and decreases voltage loss.
PURIFIED ALUMINA POWDER INSULATOR — Provides
exceptional dielectric strength and thermal conductivity allowing the
material to stand up to extreme stress.