NGK N7397 Spark Plug TR51X Iridium IX Spark Plug, Set of 8

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Designed specifically for the performance enthusiast
High durability and a consistently stable spark
Extremely high melting point

$110.32

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Product Summary

Universal Fit, Tapered Spark Plug Seat Style, Resistor

Designed specifically for the performance enthusiast
High durability and a consistently stable spark
Extremely high melting point

Comes as a Kit

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Key Specs

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Details

NGK Iridium IX spark plugs are designed specifically for the performance enthusiast. Iridium IX spark plugs offer extreme ignitibility, improved throttle response and superior anti-fouling. The fine-wire iridium center electrode ensures high durability and a consistently stable spark. A special taper-cut ground electrode shape allows more area for faster flame expansion. Iridium alloy has an extremely high melting point, perfect for today's high-performance engines. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties.

Ground Configuration: Copper Core
Center Electrode Tip Material: Iridium
Hex Size: 5/8 Inch
Insulator height: 53mm
Set of 8

Application

Spark Plug Application Chart

Guides & Documents

Performance Spark Plug Buyer’s Guide

Specifications

KEY SPECS
Brand	NGK

GENERAL
Spark Plug Seat Style	Tapered
Spark Plug Reach	.709"
Thread Pitch	14mm
Insulator Type	Projected
Resistor	Yes
Core Material	Copper
Tip Material	Iridium
Wrench Size	5/8"
Sold in Quantity	Kit