NGK's 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.

* Great choice for most aftermarket aluminium cylinder heads used for street application

Plug Specifications:

Thread Size: 14mm.

Hex Size: 16mm 

Reach: 19mm.

Seat Type: Gasket.

Gap: 1.1mm

Terminal Type: Solid.

Thread Pitch: 1.25mm.

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