# B10EG NGK Standard Racing Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Racing Spark Plug – Part Number: B10EG**

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: 3630
-   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 chart shows a 0.5 mm gap for these engines, but check it against your engine's manual before fitting.

-   Aprilia 250 GP (250) – Motorcycle
-   Aprilia RX250 (250, 1986-1985) – Motorcycle
-   Aprilia TUAREG RALLYE (250, 1998-1985) – Motorcycle
-   Aprilia AF1 125 REPLICA 89 (125, 1998-1987) – Motorcycle
-   Aprilia AF1 125 SINTESI (125, 1998-1988) – Motorcycle
-   Aprilia AF1 FUTURA (125, 1998-1990) – Motorcycle
-   Aprilia AF1 SPORT (125, 1998-1990) – Motorcycle
-   Aprilia EUROPA 125 (125, 1998-1990) – Motorcycle
-   Aprilia PEGASO 125 (125) – Motorcycle
-   Aprilia RED ROSE 125 (125, 1996-1988) – Motorcycle
-   Aprilia RX 125 (125, 1998-1990) – Motorcycle
-   Aprilia TUAREG RALLYE (I) (125) – Motorcycle
-   Kawasaki KX125-E (125, 1987-1986) – Motorcycle
-   Kawasaki KX125-F (125, 1988) – Motorcycle
-   Kawasaki KX125-G (125, 1989) – Motorcycle
-   Kawasaki KX125-H (125, 1990) – Motorcycle
-   Ktm 125 MC (125, 1986-1984) – Motorcycle
-   Ktm 125 MXC (125, 1986-1984) – Motorcycle
-   Yamaha YZ80 (80, 1999-1984) – Motorcycle
-   Yamaha YZ80 (80, 2004-2003) – Race Carts / Go-Kart

## 🔄 Supersession & Cross Reference

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

-   Champion: N54R, N57R, N80, N82
-   DENSO: 4058, 4060, W29ES-V, W31EN
-   Magneti Marelli: CW13L, CW14L
-   ACDelco: S404XLG
-   Autolite: 2414
-   Harley Davidson/Screamin' Eagle: HD8
-   Harley-Davidson: HD8

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 14.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 14.00 AUD | In stock |

## Images

- B10EG NGK racing spark plug

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/b10eg-ngk-standard-racing-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03