# B9EG NGK Standard Racing Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Racing Spark Plug – Part Number: B9EG**

NGK racing spark plugs are built for sustained high-RPM, high-temperature competition use, with precious-metal electrodes and cold heat ranges chosen for heavily loaded engines. Racing plugs are application-specific – heat range selection is critical, so confirm the specification for your engine before fitting.

## ⚙️ Key Features

-   Competition-grade construction for sustained high RPM and cylinder temperatures
-   Cold heat range for heavily loaded engines
-   Pure alumina silicate ceramic insulator, providing superior strength and better heat transfer
-   Triple seals prevent leakage

## 📏 Specifications

-   NGK stock number: 3530
-   Thread: Racing Spark Plugs
-   Reach: 19 mm (3/4 in)
-   Hex: 20.8 mm (13/16 in)
-   Seat: Gasket
-   Type: Fine Wire Non-Resistor

## 🚘 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 ST 125 (125, 1998-1982) – Motorcycle
-   Aprilia STX 125 (125, 1998-1982) – Motorcycle
-   Husqvarna 250 WXE (250, 1990) – Motorcycle
-   Husqvarna 125 SM - SUPERMOTARD (125, 2003-1998) – Motorcycle
-   Kawasaki KX500-A (500, 1984-1983) – Motorcycle
-   Kawasaki KL250-D (250, 1988-1987) – Motorcycle
-   Kawasaki KX250-D (250, 1986) – Motorcycle
-   Kawasaki KX250-E (250, 1987) – Motorcycle
-   Kawasaki KX250F (250, 1988) – Motorcycle
-   Kawasaki KX250-G (250, 1989) – Motorcycle
-   Kawasaki KX250-H (250, 1991-1990) – Motorcycle
-   Kawasaki KX80-E (80, 1985-1983) – Motorcycle
-   Kawasaki KX80-G (80, 1987-1986) – Motorcycle
-   Kawasaki KX80-J (80, 1987) – Motorcycle
-   Kawasaki KX80-L (80, 1990-1988) – Motorcycle
-   Kawasaki KX80-N (80, 1990-1988) – Motorcycle
-   Kawasaki KX80-R (80, 1991) – Motorcycle
-   Kawasaki KX80-T (80, 1991) – Motorcycle
-   Kawasaki KX60-B (60, 1988-1985) – Motorcycle
-   Kawasaki KX60-B (60, 1998-1990) – Motorcycle
-   Ktm GS500 - 2-STROKE (500, 1990-1983) – Motorcycle
-   Ktm MC500 - 2-STROKE (500, 1990-1983) – Motorcycle
-   Ktm MXC (500, 1987-1984) – Motorcycle
-   Ktm MXC (420, 1984) – Motorcycle
-   Ktm 350 ENDURO (350, 1990-1985) – Motorcycle

That is the 25 most common of 46 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: 4043, 4047, W27EN, W27ES-V
-   Magneti Marelli: CW112L, CW11L, CW12L
-   Champion: N84, N86
-   ACDelco: S408XLG
-   Autolite: 2415

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 13.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 13.00 AUD | In stock |

## Images

- B9EG NGK racing spark plug

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/b9eg-ngk-standard-racing-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03