# IFR5D10 NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: IFR5D10**

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: 4696
-   Thread: 14 mm
-   Reach: 19 mm (3/4 in)
-   Hex: 16 mm (5/8 in)
-   Seat: Gasket
-   Terminal: Solid
-   Type: ISO Projected FR-Series Wide Gap

## 🚘 Application

Listed in NGK's application charts for automotive vehicles.

-   Mercedes-Benz C43 AMG (2000-1998) – 8-24 per engine
-   Mercedes-Benz C240 (2002-2001) – 8-24 per engine
-   Mercedes-Benz C280 (2000-1999) – 8-24 per engine
-   Mercedes-Benz C320 (2002-2001) – 8-24 per engine
-   Mercedes-Benz CL55 AMG (2002-2001) – 8-24 per engine
-   Mercedes-Benz CL500 (2002-1998) – 8-24 per engine
-   Mercedes-Benz CL600 (1999-1998) – 8-24 per engine
-   Mercedes-Benz CL600 (2001) – 8-24 per engine
-   Mercedes-Benz CLK55 AMG (2002-2001) – 8-24 per engine
-   Mercedes-Benz CLK320 (2002-1998) – 8-24 per engine
-   Mercedes-Benz CLK430 (2002-1999) – 8-24 per engine
-   Mercedes-Benz E55 AMG (2002-1999) – 8-24 per engine
-   Mercedes-Benz E320 (2002-1998) – 8-24 per engine
-   Mercedes-Benz E430 (2002-1998) – 8-24 per engine
-   Mercedes-Benz G500 (2002) – 8-24 per engine
-   Mercedes-Benz ML55 AMG (2002-2000) – 8-24 per engine
-   Mercedes-Benz ML320 (2002-1998) – 8-24 per engine
-   Mercedes-Benz ML430 (2001-1999) – 8-24 per engine
-   Mercedes-Benz ML500 (2002) – 8-24 per engine
-   Mercedes-Benz S55 AMG (2002-2001) – 8-24 per engine
-   Mercedes-Benz S420 (1999-1998) – 8-24 per engine
-   Mercedes-Benz S430 (2002-2000) – 8-24 per engine
-   Mercedes-Benz S500 (1999-1998) – 8-24 per engine
-   Mercedes-Benz S600 (1999-1998) – 8-24 per engine
-   Mercedes-Benz S600 (2001) – 8-24 per engine

That is the 25 most common of 29 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: 4503, 4701, IK16TT, PK16TT
-   Bosch: 7422, F8DPP33, FR8DPP33

## 📦 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

- IFR5D10 NGK iridium spark plug
- IFR5D10 NGK iridium spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/ifr5d10-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03