NGK DILFR6N-T-91657 Iridium Spark Plug 91657 - One-Piece, Double Precious Metal Type

【NGK DILFR6N-T-91657 Iridium Spark Plug 91657 One-Piece, Double Noble Metal Type】
■Product Description
High-performance plug that improves both fuel efficiency and acceleration.
Iridium IX plugs offer faster flame propagation compared to standard plugs, and feature a thermo-edge at the insulator tip to improve plug fouling, resulting in a high-performance plug.

Specifications
Iridium IX plugs offer better ignition than standard plugs and outstanding fuel efficiency, leading to improved mileage!
Excellent ignition performance with a ultra-fine center electrode!
NGK Spark Plugs was the first in the world to adopt iridium alloy!
Compared to standard plugs, Iridium IX plugs have faster flame propagation and less energy loss (flame quenching effect), making them high-performance plugs.
The thermo-edge is exclusive to NGK Spark Plugs!
Resists fouling for sustained high performance!
The thermo-edge, where micro-discharges occur, is designed into the insulator tip. This allows micro-discharges to burn off carbon deposited on the insulator during prolonged low-speed driving, consistently maintaining high ignition performance of the plug.
The ultra-fine iridium alloy center electrode improves electric field strength, generating a stronger spark at a lower voltage.
Since the spark is concentrated at the tip of the center electrode, stable combustion is always achieved, leading to improved fuel efficiency.
Type: Double noble metal type
Thread diameter: φ14.0mm
Thread length: 26.5mm
Hexagon socket: 16.0mm

■Note on Images
*Images are for illustration purposes only. They may include products of different sizes or colors. Product design and specifications are subject to change without notice. Thank you for your understanding.