# NGK Single Iridium Spark Plug Box of 4 (ZNAR6AIX-11)

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.

-   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
-   Outstanding acceleration, high fuel efficiency and durability
-   Fine iridium tip ensures durable and consistent spark

This Part Fits:

Year

Make

Model

Submodel

2008-2010

Ford

Expedition

Eddie Bauer

2008-2010

Ford

Expedition

EL Eddie Bauer

2008-2014

Ford

Expedition

EL King Ranch

2008-2014

Ford

Expedition

EL Limited

2011-2014

Ford

Expedition

EL XL

2008-2014

Ford

Expedition

EL XLT

2008

Ford

Expedition

Funkmaster Flex Edition

2008-2014

Ford

Expedition

King Ranch

2008-2014

Ford

Expedition

Limited

2011-2014

Ford

Expedition

XL

2008-2014

Ford

Expedition

XLT

2008-2010

Ford

Explorer

Eddie Bauer

2008-2010

Ford

Explorer

Limited

2008-2010

Ford

Explorer

XLT

2008-2010

Ford

Explorer Sport Trac

Limited

2008-2010

Ford

Explorer Sport Trac

XLT

2008,2010

Ford

F-150

FX2

2008-2010

Ford

F-150

FX4

2008,2010

Ford

F-150

Harley-Davidson Edition

2008-2010

Ford

F-150

King Ranch

2008-2010

Ford

F-150

Lariat

2008

Ford

F-150

Limited

2009-2010

Ford

F-150

Platinum

2009-2010

Ford

F-150

STX

2010

Ford

F-150

SVT Raptor

2008

Ford

F-150

THE 60TH ANNIVERSARY EDITION

2008-2010

Ford

F-150

XL

2008-2010

Ford

F-150

XLT

2009-2010

Ford

F-250 Super Duty

Cabela's

2008-2009

Ford

F-250 Super Duty

FX4

2008-2009

Ford

F-250 Super Duty

Harley-Davidson Edition

2008-2010

Ford

F-250 Super Duty

King Ranch

2008-2010

Ford

F-250 Super Duty

Lariat

2008-2010

Ford

F-250 Super Duty

XL

2008-2010

Ford

F-250 Super Duty

XLT

2009-2010

Ford

F-350 Super Duty

Cabela's

2008-2009

Ford

F-350 Super Duty

FX4

2008-2009

Ford

F-350 Super Duty

Harley-Davidson Edition

2008-2010

Ford

F-350 Super Duty

King Ranch

2008-2010

Ford

F-350 Super Duty

Lariat

2008-2010

Ford

F-350 Super Duty

XL

2008-2010

Ford

F-350 Super Duty

XLT

2008-2009

Ford

Mustang

Bullitt

2008-2010

Ford

Mustang

GT

2008

Ford

Mustang

Shelby GT

2008

Lincoln

Mark LT

Base

2008-2014

Lincoln

Navigator

Base

2008-2014

Lincoln

Navigator

L

2008-2010

Mercury

Mountaineer

Premier

## Details

- **Price:** 70.85 CAD
- **Vendor:** NGK
- **Type:** Spark Plugs

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 70.85 CAD | In stock |

## Images

- Photo - Primary
- Photo - Primary
- Photo - out of package
- Photo - out of package

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> Source: [Standard Auto Part](https://www.standardautopart.com/products/ngk-single-iridium-spark-plug-box-of-4-znar6aix-11)
> Updated: 2026-06-27