# CM-6 NGK Standard Compact Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Compact Spark Plug – Part Number: CM-6**

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: 5812
-   Thread: 10 mm
-   Reach: 8.6 mm
-   Hex: 16 mm (5/8 in)
-   Seat: Gasket
-   Terminal: Solid

## 🚘 Application

Listed in NGK's application charts for lawn, garden and commercial equipment. The chart shows a 0.5 mm gap for these engines, but check it against your engine's manual before fitting.

-   Homelite (E300) – Lighting Plants and Generator
-   Honda E300, K1, K2, K3 (8HP GE300) – Lighting Plants and Generator
-   Honda E400 – Lighting Plants and Generator
-   Honda ED150 – Lighting Plants and Generator
-   Honda EM300, K1, K2, K3 (8HP GE300) – Lighting Plants and Generator
-   Honda EM400, K1 (8HP GE300) – Lighting Plants and Generator
-   Honda ER400 (8HP GE300) – Lighting Plants and Generator
-   Suzuki SE300 – Lighting Plants and Generator

## 🔄 Supersession & Cross Reference

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

-   Champion: 877, Y82
-   DENSO: U20M-U
-   Torch: A6S

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 38.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 38.00 AUD | In stock |

## Images

- CM-6 NGK spark plug
- CM-6 NGK spark plug firing end

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/cm-6-ngk-standard-compact-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03