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NGK Single Iridium Spark Plug Box of 4 (TR8IX)

SKU: NGK3691

Spark Plug

NGK Single...

Ngk

Ngk

NGK Single Iridium Spark Plug Box of 4 (TR8IX)

SKU: NGK3691

Spark Plug

NGK Single...

A$84.79
IN STOCK! Est Ship 3-5 days. This item is IN STOCK at one of our warehouses or distribution centres, the ETA is the approximate time required to prepare your order for dispatch.
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Description

The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® the ideal choice for any performance enthusiast. Iridium's high melting point is perfectly suited to today's high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.

Product Overview

NGK Iridium IX spark plugs are specifically designed for the performance enthusiast. Iridium IX provides outstanding acceleration, high fuel efficiency and durability. NGK Iridium IX plugs offer extreme ignitability and exceptional anti-fouling. Tapered cut ground electrode provides improved starting, idling and throttle response. The Iridium fine wire center electrode's durability is six times harder than platinum. Iridium alloy's extremely high melting point is perfect for today's engines. For even greater performance consider upgrading to an NGK Ruthenium HX plug.


Features and Benefits

  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs

Product Details

Center Electrode Core Material:Copper
Center Electrode Tip Material:Iridium
Description:NGK Iridium IX Spark Plug
Electrical Terminal Type:Non-Removable Nut
Ground Configuration:Standard
Ground Electrode Core Material:Nickel
Ground Electrode Quantity:1
Ground Electrode Tip Design:Taper Cut
Hex Size:5/8
Insulator Height:53.00
Manufacturer Heat Range:8
Part Number:TR8IX
Pre-Gap Size:.040
Reach:.708
Resistance:5000.0
Seat Type:Tapered
Stock Number:3691
Thread Diameter:14.00

Application Summary

2006-2000 ASTON MARTIN, 2006 CHEVROLET, 2009-1996 FORD, 2006-2002 JAGUAR, 2005 LINCOLN, 2005-2003 MAZDA, 2007-2003 MERCURY (COLDER HEAT RANGE THAN OE)

Part Type

Spark Plug

Data: v4.2 - Upd: 2026-10-15 04:04:52

Features

  • Fine iridium tip ensures durable and consistent spark
  • Outstanding acceleration, high fuel efficiency and durability
  • RECOMMENDED USAGE: Modified or high performance applications, or as an upgrade to OE nickel alloy spark plugs
  • Trivalent metal plating for superior anti-corrosion and anti-seizing properties

Specifications

Center Electrode Core Material:
Copper
Center Electrode Tip Material:
Iridium
Description:
NGK Iridium IX Spark Plug
Electrical Terminal Type:
Non-Removable Nut
Ground Configuration:
Standard
Ground Electrode Core Material:
Nickel
Ground Electrode Quantity:
1
Ground Electrode Tip Design:
Taper Cut
Hex Size:
5/8
Insulator Height:
53.00
Manufacturer Heat Range:
8
Part Number:
TR8IX
Pre-Gap Size:
.040
Reach:
.708
Resistance:
5000.0
Seat Type:
Tapered
Stock Number:
3691
Thread Diameter:
14.00

Reference Information

Brand Name/s Ngk
StreetFX SKU ngk3691
SFX Item ID 4149401
Supplier Item Code 4149401
Manufacturer SKU 3691
Manufacturer UPC 87295136911
Alternative References (TR8IX)

Compatibility

2006-2000 ASTON MARTIN, 2006 CHEVROLET, 2009-1996 FORD, 2006-2002 JAGUAR, 2005 LINCOLN, 2005-2003 MAZDA, 2007-2003 MERCURY (COLDER HEAT RANGE THAN OE)

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