# D8EA NGK Standard Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Spark Plug – Part Number: D8EA**

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: 2120
-   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.

-   Aprilia MOTO 6.5 (650, 1998-1995) – Motorcycle
-   Aprilia PEGASO 650 (GA) (650, 1995-1992) – Motorcycle
-   Aprilia PEGASO 650 (ML) (650, 1998-1997) – Motorcycle
-   Aprilia PEGASO 600 (600, 1998-1990) – Motorcycle
-   Aprilia TUAREG 600 WIND (600, 1998-1988) – Motorcycle
-   Aprilia EXT 350 (349, 1998-1985) – Motorcycle
-   Aprilia TUAREG 350 (349, 1998-1987) – Motorcycle
-   Aprilia WIND (349, 1998-1987) – Motorcycle
-   Atk 600 DIRT TRACK AIR COOLED - 4-STROKE (600, 2003-1998) – Motorcycle
-   Atk 605 CROSS COUNTRY - 4-STROKE (600, 2000-1993) – Motorcycle
-   Atk 605 ENDURO AIR COOLED - 4-STROKE (600, 2003-1993) – Motorcycle
-   Atk SUPERMOTARD - 4-STROKE (600, 2002-2001) – Motorcycle
-   Atk 604 - 4-STROKE (560, 1992-1988) – Motorcycle
-   Atk 500 DIRT TRACK - 4-STROKE (500, 2003-1999) – Motorcycle
-   Atk 500 ENDURO - 4-STROKE (500, 2003-1998) – Motorcycle
-   Atk SUPERMOTARD - 4-STROKE (500, 2002-2001) – Motorcycle
-   Atk 350 CROSS COUNTRY - 4-STROKE (350, 1999-1991) – Motorcycle
-   Atk 350 ENDURO - 4-STROKE (350, 2002-1991) – Motorcycle
-   Atk 125 ENDURO LIQUID COOLED - 4-STROKE (125, 2003) – Motorcycle
-   Benelli-Motobi 900 SEI (900) – Motorcycle
-   Benelli-Motobi 750 SEI (750) – Motorcycle
-   Benelli-Motobi 500 QUATTRO (500) – Motorcycle
-   Benelli-Motobi 500 SPORT (500) – Motorcycle
-   Benelli-Motobi LS504 (500) – Motorcycle
-   Benelli-Motobi 350 RS (350) – Motorcycle

That is the 25 most common of 203 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.

-   Motorcraft: HG2, HG22, HG22C, HG2C, HG2CU
-   Autolite: 2755, 3854, 4132, AR4132
-   Torch: D8C, D8RC, D8T
-   DENSO: 4099, X24ES-U
-   ACDelco: S121XL
-   Bosch: X4CS
-   Champion: A6
-   John Deere: TY26724
-   Magneti Marelli: CX8L

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 8.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 8.00 AUD | In stock |

## Images

- D8EA NGK spark plug
- D8EA NGK spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/d8ea-ngk-standard-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03