# D9EA NGK Standard Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Spark Plug – Part Number: D9EA**

Spark plugs are a critical engine component, providing the spark that ignites the air-fuel mixture that drives an engine. NGK spark plugs feature trivalent plating – a silver/chrome-coloured finish on the threads – for corrosion resistance against moisture and chemicals, and are designed to meet or exceed OE standards.

## ⚙️ Key Features

-   Standard nickel centre electrode
-   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: 2420
-   Thread: 12 mm
-   Reach: 19 mm (3/4 in)
-   Hex: 18 mm
-   Seat: Gasket
-   Terminal: Threaded stud

## 🚘 Application

Listed in NGK's application charts for marine, motorcycle, ATV and snowmobile equipment. The gap is not the same on all of them – the chart lists between 0.5 mm and 1.0 mm depending on the engine, so check the line for yours.

-   Honda CB900C (900, 1981-1980) – Motorcycle
-   Honda CB900F (900, 1981) – Motorcycle
-   Kawasaki ZX1000-A - NINJA (1000, 1987) – Motorcycle
-   Kawasaki ZR750-C (750, 1992-1991) – Motorcycle
-   Kawasaki ZL600-A - ELIMINATOR (600, 1987-1986) – Motorcycle
-   Kawasaki ZX600-A - NINJA (600, 1987-1985) – Motorcycle
-   Kawasaki ZX600-B - NINJA (600, 1987) – Motorcycle
-   Kawasaki ZX600-C - NINJA (600, 1997-1988) – Motorcycle
-   Kawasaki EN500-A - VULCAN (500, 1996-1990) – Motorcycle
-   Kawasaki EX500-A (500, 1993-1987) – Motorcycle
-   Kawasaki EX500-D - NINJA (500, 1996-1994) – Motorcycle
-   Kawasaki EN450 (450, 1986-1985) – Motorcycle
-   Kawasaki EN450 (450, 1990-1988) – Motorcycle
-   Kawasaki KZ305-A (305, 1982-1981) – Motorcycle
-   Kawasaki KZ305-B (305, 1983-1982) – Motorcycle
-   Kawasaki KZ305-B (305, 1988-1987) – Motorcycle
-   Moto Guzzi DAYTONA (1000, 1994-1993) – Motorcycle
-   Suzuki GS1150 (1150, 1986-1983) – Motorcycle
-   Suzuki GSX-R750 (750, 1987-1986) – Motorcycle
-   Suzuki XN85 (650, 1984-1983) – Motorcycle
-   Suzuki GS550 (550, 1986-1983) – Motorcycle
-   Suzuki GS300 (300, 1983-1982) – Motorcycle
-   Suzuki GS250T (250, 1981-1980) – Motorcycle
-   Yamaha TX500 (500, 1974-1973) – Motorcycle

## 🔄 Supersession & Cross Reference

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

-   Champion: 662, A59C, A61
-   DENSO: 4114, X27ES-U

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 10.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 10.00 AUD | In stock |

## Images

- D9EA NGK spark plug
- D9EA NGK spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/d9ea-ngk-standard-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03