Set of Japanese made NGK Spark plugs (High Performance “Iridium” version) for a 1970-1975 Datsun 240z or 260z. Each plug has a 5k ohm ceramic resistor in the spark plug; the resistor helps suppress ignition noise during sparking and reduce electromagnetic interference with on-board electronics.
Designed specifically for the performance enthusiast, Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.
-Fine iridium tip ensures high durability and a consistently stable spark
-Iridium alloy has extremely high melting point, perfect for today’s high-tech, high-performance engines
-Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
-Outstanding acceleration, high fuel efficiency and durability
-Ultimate design, technology and performance