The 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 - superior anti-corrosion and anti-seizing properties. Outstanding acceleration, high fuel efficiency and durability. Ultimate design, technology and performance. These are one step colder plugs and are recommended for higher horsepower applications. A higher heat range number does not improve engine performance it increases the plugs ability to dissipate heat.
Product Features :- Part Manufacturer: NGK
 - Engine: Multi
 - Type: Engine Parts
 - Sub Type: Spark Plugs
 - Part Number: 2309
 - Year: Multi
 - Make: Nissan
 - Car Model: Multi
 - Country of Origin: Japan
 - Resistor : Yes
 - Manufacturer Heat Range : 7
 - Electrode Core Material : Copper
 - Electrode Tip Material : Iridium
 - Insulator Type : Projected Spark Plug
 - Thread Size : 14 mm
 - Spark Plug Reach : 35.5 mm
 - Spark Plug Seat Style : Gasket
 - Wrench Diameter : 15.8 mm
 - Details: Fine Wire Centre Electrode ensures resistance
 - Iridium Alloy has an Extremely High Melting Point
 - 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
 
- Part Manufacturer : NGK
 - Engine : Multi
 - Type : Engine Parts
 - Sub Type : Spark Plugs
 - Part Number : 2309
 - Year : Multi
 - Make : Nissan
 - Car Model : Multi