# BR8HIX NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: BR8HIX**

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: 7001
-   Thread: 14 mm
-   Reach: 12.7 mm (1/2 in)
-   Hex: 20.8 mm (13/16 in)
-   Seat: Gasket

## 🚘 Application

Listed in NGK's application charts for marine, motorcycle, ATV and snowmobile equipment. The gap is not the same on all of them – the chart lists between 0.5 mm and 1.0 mm depending on the engine, so check the line for yours.

-   Yamaha AR210 (1200 cc, 2005-2003) – Inboard Engine
-   Yamaha EXCITER 135 (1200 cc, 1999-1998) – Inboard Engine
-   Yamaha EXCITER 220 (1100 cc, 1998-1996) – Inboard Engine
-   Yamaha EXCITER 227 (1200 cc, 1999-1998) – Inboard Engine
-   Yamaha EXCITER 270 (1200 cc, 1999-1998) – Inboard Engine
-   Yamaha LS2000 (1200 cc, 2003-1999) – Inboard Engine
-   Yamaha LX2000 (1200 cc, 2002) – Inboard Engine
-   Yamaha LX210 (1200 cc, 2005-2003) – Inboard Engine
-   Mariner 250 MAGNUM EFI (250 HP, 2001-1996) – Outboard Engine
-   Mariner 225 EFI/CARB (225 HP, 2004-1995) – Outboard Engine
-   Mariner 3.0L MARATHON (225 HP, 2001-1994) – Outboard Engine
-   Mariner 60 675, TO L-302050 (60 HP) – Outboard Engine
-   Mariner 60 675, TO S-000780 (60 HP) – Outboard Engine
-   Mariner M55 663, TO E-004040 (55 HP) – Outboard Engine
-   Mariner M55 663, TO EL-315378 (55 HP) – Outboard Engine
-   Mariner MARATHON 55 663 (55 HP) – Outboard Engine
-   Mariner W55 663 (55 HP) – Outboard Engine
-   Mariner 40A 676A (40 HP) – Outboard Engine
-   Mariner 40B 675B (40 HP) – Outboard Engine
-   Mariner 40C 6E9 (40 HP, 1994-1981) – Outboard Engine
-   Mariner W40 676A (40 HP) – Outboard Engine
-   Mercury PROMAX 300, SUPERMAGNUM 300, 2-STROKE 3.0L EFI (300 HP) – Outboard Engine
-   Mercury 250 XRI EFI (250 HP, 2006-1995) – Outboard Engine
-   Mercury 225 EFI, SEA PRO, XRI, WORK (225 HP, 2006-1995) – Outboard Engine
-   Mercury 200 EFI (200 HP, 2006) – Outboard Engine

That is the 25 most common of 300 applications NGK's charts list for this plug – ask us to check yours.

## 🔄 Supersession & Cross Reference

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

-   DENSO: 4039, 4042, 5380, IWF24, W24FS-GU, W24FS-ZU, W25FN
-   Bosch: W3AP, W3AS, W4AP, W4AS
-   Brisk: N15W
-   Magneti Marelli: CWP9N

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 58.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 58.00 AUD | In stock |

## Images

- BR8HIX NGK iridium spark plug

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/br8hix-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03