# BR8EIX NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: BR8EIX**

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: 5044
-   Thread: 14 mm
-   Reach: 19 mm (3/4 in)
-   Hex: 20.8 mm (13/16 in)
-   Seat: Gasket
-   Type: 14mm Spark Plugs cont'd

## 🚘 Application

Listed in NGK's application charts for marine, motorcycle, ATV and snowmobile equipment and automotive vehicles. 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.

-   Emerald Bay BANSHEE XS (80 HP, 1996) – Outboard Engine
-   Emerald Bay BANSHEE XS (50 HP, 1996) – Outboard Engine
-   Aprilia SR 150 (150, 2000) – Motorcycle
-   Aprilia MX125 (125, 2006-2003) – Motorcycle
-   Aprilia RED ROSE 125 (125, 1998-1997) – Motorcycle
-   Aprilia RS 125 (MP) 11KW (125, 1998-1996) – Motorcycle
-   Aprilia RS 125 TUONO (125, 2003) – Motorcycle
-   Aprilia SR 125 (125, 2000) – Motorcycle
-   Aprilia CLASSIC 50 (50, 1999-1992) – Motorcycle
-   Aprilia RS 50 (50, 2007-2006) – Motorcycle
-   Aprilia RS 50 EXTREMA (50) – Motorcycle
-   Aprilia SCARABEO 50 2T - PIAGGIO (50, 2006-2005) – Motorcycle
-   Atk 450 AIR COOLED - 2-STROKE (450, 2003) – Motorcycle
-   Atk 406 - 2-STROKE (400, 1996-1988) – Motorcycle
-   Atk 260 LIQUID COOLED - 2-STROKE (260, 2002-1995) – Motorcycle
-   Atk 250 AIR COOLED - 2-STROKE (250, 1996-1988) – Motorcycle
-   Atk 250 LIQUID COOLED - 2-STROKE (250, 2003-1995) – Motorcycle
-   B.S.A. A75 ROCKET (750) – Motorcycle
-   B.S.A. SS GOLD STAR (250) – Motorcycle
-   B.S.A. A50W – Motorcycle
-   B.S.A. A65 – Motorcycle
-   B.S.A. B34 S – Motorcycle
-   B.S.A. B50 MX VICTOR – Motorcycle
-   B.S.A. C15S – Motorcycle
-   B.S.A. C25 – Motorcycle

That is the 25 most common of 575 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: 4032, 4034, 4175, 5316, IW24, W24ES-GU, W24ES-V, W24ES-ZU and 1 more
-   Bosch: W4CP, W4CS, WR4CP
-   Autolite: XS4063, XS4063DP
-   Beck Arnley: 1765045, 1765159
-   Magneti Marelli: CWF11L, CWP9L
-   Motorcraft: AG901X, AGR901X
-   ACDelco: S438XLG
-   Brisk: L10JW
-   Champion: N87G

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 30.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 30.00 AUD | In stock |

## Images

- BR8EIX NGK iridium spark plug
- BR8EIX NGK iridium spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/br8eix-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03