# D6HA NGK Standard Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Spark Plug – Part Number: D6HA**

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: 6512
-   Thread: 12 mm
-   Reach: 12.7 mm (1/2 in)
-   Hex: 18 mm
-   Seat: Gasket
-   Terminal: Threaded stud

## 🚘 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.

-   Volvo-Penta SAIL DRIVE - MB2/50S – Inboard Engine
-   Honda CB92 (125, 1963-1962) – Motorcycle
-   Honda CL90 (90, 1969-1967) – Motorcycle
-   Honda S90 (90, 1969-1964) – Motorcycle
-   Honda ST90 (90, 1975-1973) – Motorcycle

## 🔄 Supersession & Cross Reference

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

-   Champion: 888, 910, P10Y, P8Y
-   Motorcraft: HE3, HV22, HV3
-   ACDelco: MC124FS, S124FS
-   Autolite: 2716, 2735
-   DENSO: 4078, X20FS-U
-   Torch: C6RTC, C6TC
-   Magneti Marelli: CX6N

## 📦 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

- D6HA NGK spark plug
- D6HA NGK spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/d6ha-ngk-standard-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03