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NGK 2309 LFR7AIX IX Iridium Plug

NGK 2309 LFR7AIX IX Iridium Plug

Features and Specifications
NGK's IX Iridium Series Plugs were Designed Specifically for the Performance Enthusiast.

Fine Wire Center Electrode Ensures High Durability and a Consistently Stable Spark

Iridium Alloy has an Extremely High Melting Point, Perfect for Today's High-Tech, High Performance Engines

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


Thread Size: 14mm

Thread Pitch: 1.25mm

Seat Type: Gasket

Resistor: Yes

Resistor Value: 5K Ohm

Reach: 26.5mm (1.04")

Hex Size: 5/8" (16mm)

Terminal Type: Solid

Overall Height: ISO

Gap: .031" (0.8mm)

Center Electrode

Material: Iridium

Type: Fine Wire

Size: 0.6mm

Projection: Projected

Ground Electrode

Material: Nickel

Type: Standard

Shape: Taper Cut

Quantity: 1


Torque Specs: Cast Iron: 18-25.3 lb. ft. Aluminum: 18-21.6 lb. ft.

Brand: NGK

Heat Range: 7

Longevity: 40-50k

  • 2004 Subaru Forester XT
  • 2004 Subaru Impreza WRX STI

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