NGK ILTR7N8 Laser Iridium Resistor Spark Plug 95993 DF6H-11B

The **NGK 95993 DF6H-11B Laser Iridium Spark Plug** is a premium high-ignitability ignition component from NGK’s Laser Iridium series, engineered for superior performance, extended longevity, and reliable operation in modern engines—making it an excellent OE replacement or upgrade choice.

Key features include:

– **Fine-wire iridium center electrode** (0.6mm tip) laser-welded for exceptional durability (up to six times harder than platinum), outstanding ignitability, concentrated spark energy, and minimal wear over time.
– **Platinum fine-wire tip** or raised pad on the ground electrode for even wear distribution, especially in distributorless ignition systems (DIS), ensuring consistent performance and reduced electrode erosion.
– **Dual Fine Electrode (DFE) high-ignitability design** with a J-gap configuration for enhanced spark efficiency and stable combustion.
– **Copper core** in the center electrode combined with high-grade pure alumina silicate ceramic insulator for superior heat dissipation, anti-fouling properties, and prevention of overheating or misfires.
– **Trivalent metal plating** on the shell, corrugated ribs, and triple gasket seals to prevent leakage, reduce corrosion, and ensure a secure fit.
– **Non-resistor** configuration (some listings note approximate resistor value, but primary spec is non-resistor/No resistor; confirm per application).
– **Heat range 6** for balanced thermal characteristics in a wide range of operating conditions.
– **Thread specifications**: 12mm diameter, 1.25mm pitch, 26.5mm (1.04″) reach, gasket seat, 9/16″ (14mm) hex size, solid terminal, and pre-set gap of approximately 0.043″ (1.1mm) for many applications.
– **Torque specs**: Cast iron 10.8-18 lb. ft.; Aluminum 10.8-14.5 lb. ft.