# BR7HIX NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: BR7HIX**

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: 7067
-   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 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.

-   Chrysler M122A (4 CYL) – Inboard Engine
-   Chrysler M122B (4 CYL) – Inboard Engine
-   Chrysler M183B (6 CYL) – Inboard Engine
-   Hardin H405TC (1990-1978) – Inboard Engine
-   Evinrude (125 HP, 1972-1971) – Outboard Engine
-   Evinrude (115 HP, 1970-1969) – Outboard Engine
-   Evinrude CV4 (115 HP, 1998-1979) – Outboard Engine
-   Evinrude TURBOJET CV4 (115 HP, 1998-1994) – Outboard Engine
-   Evinrude CV4 (112 HP, 1997-1979) – Outboard Engine
-   Evinrude CV4 (110 HP, 1997-1979) – Outboard Engine
-   Evinrude STARFIRE (100 HP, 1972-1967) – Outboard Engine
-   Evinrude V4 (100 HP, 1980-1979) – Outboard Engine
-   Evinrude SPL CV4 (88 HP, 1997-1979) – Outboard Engine
-   Evinrude (85 HP, 1980-1968) – Outboard Engine
-   Evinrude TRIUMPH, 3-CYL. (65 HP, 1973-1972) – Outboard Engine
-   Evinrude 2-CYL. (55 HP, 1989-1976) – Outboard Engine
-   Evinrude (50 HP, 1979-1978) – Outboard Engine
-   Evinrude (40 HP, 1976-1974) – Outboard Engine
-   Evinrude COM 43 CID (40 HP, 1990-1981) – Outboard Engine
-   Evinrude (30 HP, 1998-1978) – Outboard Engine
-   Evinrude (28 HP, 1997-1978) – Outboard Engine
-   Evinrude (25 HP, 1977) – Outboard Engine
-   Evinrude 2-CYL. (25 HP, 1998-1977) – Outboard Engine
-   Evinrude (20 HP, 1993-1978) – Outboard Engine
-   Evinrude 2-CYL. (20 HP, 1998-1978) – Outboard Engine

That is the 25 most common of 374 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: 4026, 5379, IWF22, W22FS-GU, W22FS-ZU
-   Autolite: XS4092, XS4092DP, XS4093, XS4093DP
-   Bosch: W5AP, W5AS
-   Brisk: N17W
-   Magneti Marelli: CWP8N

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 35.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 35.00 AUD | In stock |

## Images

- BR7HIX NGK iridium spark plug
- BR7HIX NGK iridium spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/br7hix-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03