# CR9EHIX-9 NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: CR9EHIX-9**

Iridium NGK spark plugs offer a longer service life than a standard nickel-tipped spark plug: while nickel-alloy plugs offer a service life of roughly 20,000-40,000km, NGK Iridium IX spark plugs offer a service life of up to 60,000km, so fewer replacements are needed over time despite the higher initial cost.

Precious-metal spark plugs like the NGK Iridium IX also offer higher ignitability, achieved with an exposed fine-tip centre electrode that promotes superior flame growth compared with a standard spark plug. Iridium has a much higher melting point (2410°C) than nickel (1453°C), allowing the centre electrode diameter to be reduced from 2.5mm to 0.6mm – a smaller electrode mass that reduces the impedance to flame progress, helping acceleration, fuel consumption and idle quality.

## ⚙️ Key Features

-   Fine iridium-tipped centre electrode for a slow wear rate and stable idle
-   Longer service life than standard nickel plugs
-   Trivalent metal plating provides superior anti-corrosion and anti-seizing properties
-   Corrugated ribs reduce the risk of flashover
-   Pure alumina silicate ceramic insulator, providing superior strength and better heat transfer
-   Copper core aids in heat removal
-   Triple seals prevent leakage

## 📏 Specifications

-   NGK stock number: 6216
-   Thread: 10 mm
-   Reach: 19 mm (3/4 in)
-   Hex: 16 mm (5/8 in)
-   Seat: Gasket
-   Terminal: Threaded stud
-   Type: Partial Thread, Wide Gap

## 🚘 Application

Listed in NGK's application charts for marine, motorcycle, ATV and snowmobile equipment. The chart shows a 1.0 mm gap for these engines, but check it against your engine's manual before fitting.

-   Honda CBR1100XX (1100, 2000-1997) – Motorcycle
-   Honda RVF750R (750, 1994) – Motorcycle
-   Honda CBR650F, FA (650, 2016-2015) – Motorcycle
-   Honda CB600F (600, 2006-2004) – Motorcycle
-   Honda CBR600F2 (600, 1994-1991) – Motorcycle
-   Honda CBR600F3 (600, 1998-1995) – Motorcycle
-   Honda CBR600F4 (600, 2000-1999) – Motorcycle
-   Honda CBR600SE (600, 1998) – Motorcycle
-   Honda CBR600SJR (600, 1996) – Motorcycle
-   Honda NX250 (250, 1990-1988) – Motorcycle

## 🔄 Supersession & Cross Reference

NGK's cross-reference tables list this plug against these part numbers.

-   DENSO: 4142, 4143, 4203, 6216, IUH27, U27FE-ZU9, U27FER-ZU9, U31FE-ZU-9

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 43.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 43.00 AUD | In stock |

## Images

- CR9EHIX-9 NGK iridium spark plug

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/cr9ehix-9-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03