Made exclusively for high-performance street and racing engines
Put more fire "in the hole" for more power to the wheels! Unique U-groove ground electrode minimizes flame dissipation to ensure most complete combustion even with a lean air-fuel mix. U-groove improves "ignitability" and increases fuel combustion for better performance. Nothing to quench flame and cause misfires and rough idle as with conventional plugs. Firing is dramatically improved without increasing spark gap. Improve throttle response and fuel efficiency. Set of 4 spark plugs-;order the number of sets required for your vehicle.
MORE REASONS NO OTHER PLUG COMPARES!
Copper-glass seal bonds insulator to electrode for a gas-tight seal.
Electric heat seal ensures stable heat range for uniform performance.
U-groove ground electrode develops a larger spark nucleus for better, faster combustion and reduced fouling.
Ribbed insulator provides superior strength, conductivity while preventing arcing.
Copper-core center electrode with nickel-chrome shell for superior electrical conductivity and maximum heat dissipation.
Machine-rolled threads for trouble-free installation/removal.