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Ngk

NGK Single Iridium Spark Plug Box of 4 (UR45IX)

SKU: NGK7559

Spark Plug

NGK Single...

Ngk

Ngk

NGK Single Iridium Spark Plug Box of 4 (UR45IX)

SKU: NGK7559

Spark Plug

NGK Single...

A$75.55
Special Order. Contact for ETA. This item is out of stock in our warehouse and partner distribution centres. In some cases, this may be due to not having live inventory feeds available for all suppliers. Please contact us before ordering if you need to meet a specific deadline.
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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
  • Fine iridium tip ensures durable and consistent spark
  • Trivalent metal plating for superior anti-corrosion and anti-seizing properties
  • Outstanding acceleration, high fuel efficiency and durability

Product Details

Year Make
557:14.00
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:55.00
Manufacturer Heat Range:4
Part Number:UR45IX
Pre-Gap Size:.060
Reach:.46
Resistance:5000.0
Seat Type:Tapered
Stock Number:7559

Application Summary

AMERICAN MOTORS 1983-80; BUICK 1987-75; CADILLAC 1982-80; CHECKER 1982-75; CHEV 1985-70; FORD 1996-75; GMC 1984-78; JEEP 1983-80; LINCOLN 1992-74; MERCURY 1993-74; OLDSMOBILE 1987-75; PONT 1987-75

Part Type

Spark Plug

Data: v4.2 - Upd: 2026-10-14 07:39:20

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

Year
Make
557:
14.00
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:
55.00
Manufacturer Heat Range:
4
Part Number:
UR45IX
Pre-Gap Size:
.060
Reach:
.46
Resistance:
5000.0
Seat Type:
Tapered
Stock Number:
7559

Reference Information

Brand Name/s Ngk
StreetFX SKU ngk7559
SFX Item ID 4149440
Supplier Item Code 4149440
Manufacturer SKU 7559
Manufacturer UPC 87295175590
Alternative References (UR45IX)

Compatibility

AMERICAN MOTORS 1983-80; BUICK 1987-75; CADILLAC 1982-80; CHECKER 1982-75; CHEV 1985-70; FORD 1996-75; GMC 1984-78; JEEP 1983-80; LINCOLN 1992-74; MERCURY 1993-74; OLDSMOBILE 1987-75; PONT 1987-75

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