# LZFR5CI-11 NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: LZFR5CI-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: 92145
-   Thread: 14 mm
-   Reach: 26.5 mm (1.04 in)
-   Hex: 16 mm (5/8 in)
-   Seat: Gasket
-   Terminal: Solid
-   Type: Wide Gap Extended Projection

## 🚘 Application

Listed in NGK's application charts for automotive vehicles.

-   Chrysler 200 (2017-2015) – 4-16 per engine
-   Chrysler 300 (2017-2009) – 4-16 per engine
-   Chrysler Aspen (2009-2008) – 4-16 per engine
-   Dodge Challenger (2017-2009) – 4-16 per engine
-   Dodge Charger (2017-2009) – 4-16 per engine
-   Dodge Dakota (2010-2008) – 4-16 per engine
-   Dodge Dart (2016-2013) – 4-16 per engine
-   Dodge Durango (2009-2008) – 4-16 per engine
-   Dodge Durango (2017-2011) – 4-16 per engine
-   Dodge Ram 1500 (2010-2008) – 4-16 per engine
-   Dodge Ram 2500 (2010-2009) – 4-16 per engine
-   Dodge Ram 3500 (2009) – 4-16 per engine
-   Fiat 500X (2017-2016) – 4-16 per engine
-   Jeep Cherokee (2017-2014) – 4-16 per engine
-   Jeep Commander (2010-2008) – 4-16 per engine
-   Jeep Grand Cherokee (2017-2008) – 4-16 per engine
-   Jeep Renegade (2017-2015) – 4-16 per engine
-   Ram 1500 (2017-2011) – 4-16 per engine
-   Ram 2500 (2017-2011) – 4-16 per engine
-   Ram 3500 (2017-2011) – 4-16 per engine
-   Ram Dakota (2011) – 4-16 per engine
-   Ram ProMaster City (2017-2015) – 4-16 per engine

## 🔄 Supersession & Cross Reference

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

-   Bosch: 6734, 8162, 9673, FR8SII33X, FR8SPP30X
-   Champion: 9010, 9055, REC10WMPB, REC12WMPB5

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 47.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 47.00 AUD | In stock |

## Images

- LZFR5CI-11 NGK iridium spark plug
- LZFR5CI-11 NGK iridium spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/lzfr5ci-11-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03