Kit Includes Using Iridium allows Denso to shrink the tip to 0.4mm which decreases voltage requirements and improves firing performance. The tip of the electrode is cut to form a taper, this also greatly improves firing performance by reducing quenching. U-Groove design is cut inside the ground electrode to maintain a large volume of space required to form the nucleus of a flame. Allows spark to fill the gap formed by the U groove. This ball of fire develops a larger, hotter flash so combustion is more complete. Giving better, smoother idle. The insulators are made of a highly purified alumina powder, which gives exceptional dielectric strength and thermal conductivity at high temps. as well as greater strength. The 5 rib design prevents flashover and decreases voltage loss. End result is a all around better performing vehicle.
