# NGK Iridium IX Spark Plug Box of 4 (LZFR5AIX-11E)

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

2008-2009

Chrysler

Aspen

Limited

2009

Chrysler

Aspen

Limited Hybrid

2009-2010

Dodge

Dakota

Big Horn

2008-2010

Dodge

Dakota

Laramie

2009-2010

Dodge

Dakota

Lone Star

2008

Dodge

Dakota

SLT

2008

Dodge

Dakota

Sport

2008

Dodge

Dakota

SXT

2008

Dodge

Dakota

TRX

2008-2010

Dodge

Dakota

TRX4

2008

Dodge

Durango

Adventurer

2008-2009

Dodge

Durango

Limited

2009

Dodge

Durango

Limited Hybrid

2009

Dodge

Durango

SE

2008-2009

Dodge

Durango

SLT

2008

Dodge

Durango

SXT

2008-2010

Dodge

Ram 1500

SLT

2008-2010

Dodge

Ram 1500

ST

2008

Dodge

Ram 1500

SXT

2009-2010

Dodge

Ram 1500

TRX

2009-2010

Dodge

Ram 1500

TRX4

2008-2009

Jeep

Commander

Limited

2008-2009

Jeep

Commander

Sport

2008-2009

Jeep

Grand Cherokee

Laredo

2008-2009

Jeep

Grand Cherokee

Limited

2011

Ram

1500

Big Horn

2011-2012

Ram

1500

Outdoorsman

2011-2013

Ram

1500

SLT

2011-2012

Ram

1500

ST

2012-2013

Ram

1500

Tradesman

2011

Ram

Dakota

Big Horn

2011

Ram

Dakota

Laramie

## Details

- **Price:** 74.61 CAD
- **Vendor:** NGK
- **Type:** Spark Plugs

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 74.61 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-iridium-ix-spark-plug-box-of-4-lzfr5aix-11e)
> Updated: 2026-06-28