# ZFR5FIX-11 NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: ZFR5FIX-11**

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: 2477
-   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 automotive vehicles.

-   Acura CL (1999-1997) – 4-12 per engine
-   Acura CL (2003-2001) – 4-12 per engine
-   Acura EL (2000-1997) – 4-12 per engine
-   Acura Integra (2001-1992) – 4-12 per engine
-   Acura MDX (2002-2001) – 4-12 per engine
-   Acura TL (2003-1999) – 4-12 per engine
-   Bmw 750iL (1996-1988) – 4-12 per engine
-   Bmw 850Ci (1997-1993) – 4-12 per engine
-   Bmw 850CSi (1995-1994) – 4-12 per engine
-   Bmw 850i (1992-1991) – 4-12 per engine
-   Chrysler 200 (2014-2011) – 4-12 per engine
-   Chrysler Sebring (2007) – 4-12 per engine
-   Chrysler Sebring (2010-2009) – 4-12 per engine
-   Dodge Avenger (2014-2008) – 4-12 per engine
-   Dodge Caliber (2012-2007) – 4-12 per engine
-   Dodge Dakota (2007-2003) – 4-12 per engine
-   Dodge Journey (2017-2009) – 4-12 per engine
-   Dodge Ram 2500 (1996-1994) – 4-12 per engine
-   Dodge Ram 3500 (1996-1994) – 4-12 per engine
-   Honda Accord (2002-1990) – 4-12 per engine
-   Honda Civic (2000-1992) – 4-12 per engine
-   Honda Civic del Sol (1997-1993) – 4-12 per engine
-   Honda CR-V (1998-1997) – 4-12 per engine
-   Honda Odyssey (2004-1995) – 4-12 per engine
-   Honda Pilot (2005-2003) – 4-12 per engine

That is the 25 most common of 47 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.

-   Autolite: XP5224, XP5224DP2, XP5405, XP5405DP2, XP985, XP985DP2
-   DENSO: 4701, 5303, IK16, IK16TT
-   Bosch: 4419, 9651, FR8LII33X

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 41.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 41.00 AUD | In stock |

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/zfr5fix-11-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03