# IZFR6K11 NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: IZFR6K11**

NGK iridium spark plugs feature an iridium alloy on the centre electrode, welded on with a laser – one of the world's hardest metals, with a melting point of 2450°C, giving very high resistance to spark erosion and, on average, double the service life of a standard nickel spark plug.

## ⚙️ Key Features

-   Fine iridium-tipped centre electrode and platinum-tipped ground electrode for a slow wear rate, stable idle, improved fuel efficiency and lower emissions
-   Longer service life
-   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
-   Triple seals prevent leakage
-   Copper core aids in heat removal

## 📏 Specifications

-   NGK stock number: 6994
-   Thread: 14 mm
-   Reach: 19 mm (3/4 in)
-   Hex: 16 mm (5/8 in)
-   Seat: Gasket
-   Terminal: Solid
-   Type: ISO Extended Projection Wide Gap

## 🚘 Application

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

-   Honda BF150A4, SERIAL #BANJ-1000001-1099999 (150 HP) – Outboard Engine
-   Honda BF150A4, SERIAL #BAPJ-1000001-1099999 (150 HP) – Outboard Engine
-   Honda BF150A5, SERIAL #BANJ-1100001-1199999 (150 HP) – Outboard Engine
-   Honda BF150A5, SERIAL #BAPJ-1100001-1199999 (150 HP) – Outboard Engine
-   Honda BF150A6, SERIAL #BANJ-1200001-1299999 (150 HP) – Outboard Engine
-   Honda BF150A6, SERIAL #BAPJ-1200001-1299999 (150 HP) – Outboard Engine
-   Honda BF150AK0, SERIAL #BANJ-1300001-9999999 (150 HP) – Outboard Engine
-   Honda BF150AK0, SERIAL #BAPJ-1300001-9999999 (150 HP) – Outboard Engine
-   Honda BF150AK2, SERIAL #BANJ-1400001-9999999 (150 HP) – Outboard Engine
-   Honda BF150AK2, SERIAL #BAPJ-1400001-9999999 (150 HP) – Outboard Engine
-   Honda BF135A4, SERIAL #BARJ-1000001-1099999 (135 HP) – Outboard Engine
-   Honda BF135A4, SERIAL #BASJ-1000001-1099999 (135 HP) – Outboard Engine
-   Honda BF135A5, SERIAL #BARJ-1100001-1199999 (135 HP) – Outboard Engine
-   Honda BF135A5, SERIAL #BASJ-1100001-1199999 (135 HP) – Outboard Engine
-   Honda BF135A6, SERIAL #BARJ-1200001-1299999 (135 HP) – Outboard Engine
-   Honda BF135A6, SERIAL #BASJ-1200001-1299999 (135 HP) – Outboard Engine
-   Honda BF135AK0, SERIAL #BARJ-1300001-9999999 (135 HP) – Outboard Engine
-   Honda BF135AK0, SERIAL #BASJ-1300001-9999999 (135 HP) – Outboard Engine
-   Honda BF135AK2, SERIAL #BARJ-1400001-9999999 (135 HP) – Outboard Engine
-   Honda BF135AK2, SERIAL #BASJ-1400001-9999999 (135 HP) – Outboard Engine
-   Acura CSX (2011-2006) – 4-6 per engine
-   Acura MDX (2009-2007) – 4-6 per engine
-   Acura RL (2008-2005) – 4-6 per engine
-   Acura RSX (2006-2002) – 4-6 per engine
-   Acura TL (2008-2004) – 4-6 per engine

That is the 25 most common of 30 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: 3371, 3377, 3401, 4504, 4702, 5615, IK20TT, PK20TT and 3 more
-   Champion: 7782, 9014, 9812, RC8ZWYPB4
-   Bosch: 6714, 8109, FR6LPP300X
-   Autolite: XP5224

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 36.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 36.00 AUD | In stock |

## Images

- IZFR6K11 NGK iridium spark plug
- IZFR6K11 NGK iridium spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/izfr6k11-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03