# LZTR5AIX-13 NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: LZTR5AIX-13**

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: 2314
-   Thread: 14 mm
-   Reach: 25 mm
-   Hex: 16 mm (5/8 in)
-   Seat: Tapered
-   Terminal: Solid
-   Type: 14mm Spark Plugs cont'd Extended Projection Wide Gap

## 🚘 Application

Listed in NGK's application charts for automotive vehicles.

-   Chrysler 300 (2010-2005) – 4-16 per engine
-   Chrysler Concorde (2004-1998) – 4-16 per engine
-   Chrysler Intrepid (2004-1998) – 4-16 per engine
-   Chrysler Pacifica (2008-2005) – 4-16 per engine
-   Chrysler PT Cruiser (2009-2003) – 4-16 per engine
-   Chrysler Sebring (2010-2001) – 4-16 per engine
-   Chrysler Town & Country (2010-2001) – 4-16 per engine
-   Chrysler Voyager (2003-2001) – 4-16 per engine
-   Dodge Avenger (2010-2008) – 4-16 per engine
-   Dodge Caravan (2007-2001) – 4-16 per engine
-   Dodge Challenger (2010-2008) – 4-16 per engine
-   Dodge Charger (2010-2006) – 4-16 per engine
-   Dodge Grand Caravan (2010-2001) – 4-16 per engine
-   Dodge Intrepid (2004-1998) – 4-16 per engine
-   Dodge Magnum (2008-2005) – 4-16 per engine
-   Dodge Neon (2005-2003) – 4-16 per engine
-   Dodge Stratus (2006-2001) – 4-16 per engine
-   Dodge Viper (2010-2008) – 4-16 per engine
-   Dodge Viper (2017-2015) – 4-16 per engine
-   Jeep Grand Cherokee (2010-2006) – 4-16 per engine
-   Jeep Wrangler (2011-2007) – 4-16 per engine
-   Srt Viper (2014-2013) – 4-16 per engine
-   Volkswagen Routan (2010-2009) – 4-16 per engine

## 🔄 Supersession & Cross Reference

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

-   Bosch: 4481, 9661, 9667, HR8SII330V, HR8TII3302V
-   Autolite: XP5263, XP5263DP2, XP5426, XP5426DP2
-   DENSO: 4717, 5349, ITL16, ITL16TT
-   Champion: 9403, 9403-2, 9440

## 📦 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 |

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/lztr5aix-13-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03