# NGK Iridium IX Spark Plug Box of 4 (CR9EHIX-9)

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

2004,2006

Honda

CB600F 599

Base

1997-2000

Honda

CBR1100XX Super Blackbird

Base

1991-1994

Honda

CBR600F F2

Base

1995-1998

Honda

CBR600F F3

Base

1999-2000

Honda

CBR600F F4

Base

2014-2016,2018

Honda

CBR650F

Base

2015-2016

Honda

CBR650F ABS

Base

2020

Honda

CRF150R

Base

2020

Honda

CRF150R Expert

Base

2010

Honda

NHX110 Elite

Base

1988-1990

Honda

NX250

Base

1994

Honda

RVF750R RC45

Base

## 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-cr9ehix-9)
> Updated: 2026-06-27