# SILZKBR8D8S NGK Iridium Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Iridium Spark Plug – Part Number: SILZKBR8D8S**

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: 97506
-   Thread: 12 mm
-   Reach: 26.5 mm (1.04 in)
-   Hex: 14 mm
-   Seat: Gasket
-   Terminal: Solid
-   Type: 12mm Spark Plugs cont'd Extended Projection

## 🚘 Application

Listed in NGK's application charts for automotive vehicles.

-   Bmw 135i (2013-2011) – 4-8 per engine
-   Bmw 135is (2013) – 4-8 per engine
-   Bmw 228i (2016-2014) – 4-8 per engine
-   Bmw 228i xDrive (2016-2015) – 4-8 per engine
-   Bmw 320i (2017-2012) – 4-8 per engine
-   Bmw 320i xDrive (2017-2013) – 4-8 per engine
-   Bmw 328i (2016-2012) – 4-8 per engine
-   Bmw 328i GT xDrive (2016-2014) – 4-8 per engine
-   Bmw 328i xDrive (2016-2013) – 4-8 per engine
-   Bmw 335i (2015-2011) – 4-8 per engine
-   Bmw 335i GT xDrive (2016-2014) – 4-8 per engine
-   Bmw 335i xDrive (2015-2011) – 4-8 per engine
-   Bmw 428i (2016-2014) – 4-8 per engine
-   Bmw 428i Gran Coupe (2016-2015) – 4-8 per engine
-   Bmw 428i xDrive (2016-2014) – 4-8 per engine
-   Bmw 428i xDrive Gran Coupe (2016-2015) – 4-8 per engine
-   Bmw 435i (2016-2014) – 4-8 per engine
-   Bmw 435i Gran Coupe (2016-2015) – 4-8 per engine
-   Bmw 435i xDrive (2016-2014) – 4-8 per engine
-   Bmw 435i xDrive Gran Coupe (2016-2015) – 4-8 per engine
-   Bmw 528i (2016-2012) – 4-8 per engine
-   Bmw 528i xDrive (2016-2012) – 4-8 per engine
-   Bmw 535i (2016-2011) – 4-8 per engine
-   Bmw 535i GT (2017-2010) – 4-8 per engine
-   Bmw 535i GT xDrive (2017-2011) – 4-8 per engine

That is the 25 most common of 62 applications NGK's charts list for this plug – ask us to check yours.

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 53.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 53.00 AUD | In stock |

## Images

- SILZKBR8D8S NGK iridium spark plug
- SILZKBR8D8S NGK iridium spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/silzkbr8d8s-ngk-iridium-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03