NGK 7740 - PTR5C-13 Laser Platinum Spark Plug

Sold as singles Thread Size 14mm Thread Pitch 1.25mm Seat Type Tapered Reach 18mm (0.709") Gap .050" (1.3mm) Heat Range 5 Center Electrode Material Platinum Center Electrode Projection Projected Ground Electrode Material Platinum NGK standard plugs are constructed for longer life and optimum performance. - Trivalent metal plating provides superior anti-corrosion and anti-seizing properties - Corrugated ribs prevent flashover - Pure alumina silicate ceramic insulator, provides superior strength and better heat transfer - Copper core aids in heat removal - Triple seals prevent leakage