# BMR7A NGK Standard Compact Spark Plug | Genuine NGK Spark Plug

## 🔧 Product Description

**NGK Standard Compact Spark Plug – Part Number: BMR7A**

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: 4226
-   Thread: 14 mm
-   Reach: 9.5 mm (3/8 in)
-   Hex: 19 mm (3/4 in)
-   Seat: Gasket
-   Type: Compact

## 🚘 Application

Listed in NGK's application charts for lawn, garden and commercial 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.

-   Partner 1632, 1632C – Chainsaw
-   Partner 1646, 1646C – Chainsaw
-   Partner 1647C – Chainsaw
-   Partner 1655, 1655B – Chainsaw
-   Partner 2055, 2055B – Chainsaw
-   Blower PB-250 (24.5cc ROBIN) – Outdoor Power Equipment
-   Brushcutter MS-20C (1.1HP ROBIN) – Outdoor Power Equipment
-   Brushcutter MS-340 (33cc DOLMAR) – Outdoor Power Equipment
-   Brushcutter MS-2501 (1.3KW ROBIN) – Outdoor Power Equipment
-   Brushcutter MS-2810 (1.5HP ROBIN) – Outdoor Power Equipment
-   Brushcutter MS-3300 (33cc DOLMAR) – Outdoor Power Equipment
-   Brushcutter MS-3310 (33cc DOLMAR) – Outdoor Power Equipment
-   Brushcutter MS-4000 (39cc DOLMAR) – Outdoor Power Equipment
-   Brushcutter MS-4010 (39cc DOLMAR) – Outdoor Power Equipment
-   Brushcutter MS-4500 (45cc DOLMAR) – Outdoor Power Equipment
-   Brushcutter MS-4510 (45cc DOLMAR) – Outdoor Power Equipment
-   Hedge Trimmer HT2045D (1.1HP ROBIN) – Outdoor Power Equipment
-   Hedge Trimmer HT2062E (1.1HP ROBIN) – Outdoor Power Equipment
-   Hedge Trimmer MH-2556 (24.5cc) – Outdoor Power Equipment
-   Line Trimmer LT-250 (24.5cc ROBIN) – Outdoor Power Equipment
-   Stick Edger PE-250 (24.5cc ROBIN) – Outdoor Power Equipment
-   String Trimmer MS-20C (19.8cc ROBIN) – Outdoor Power Equipment
-   String Trimmer MS-2501 (24.5cc ROBIN) – Outdoor Power Equipment
-   String Trimmer MS-2810 (27.2cc ROBIN) – Outdoor Power Equipment
-   Hedge Trimmer KHS750BC (22.5cc) – Outdoor Power Equipment

That is the 25 most common of 142 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.

-   Champion: 893, RCJ4
-   Autolite: 3345
-   Bosch: 7541
-   E3: E3.12
-   Torch: L7RC

## 📦 Condition

-   Brand new genuine product
-   Supplied in original packaging

## Details

- **Price:** 11.0 AUD
- **Vendor:** NGK
- **Type:** Ignition & Controls

## Variants

| Variant | Price | Available |
|---------|-------|-----------|
| Default Title | 11.00 AUD | In stock |

## Images

- BMR7A NGK spark plug

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> Source: [Sawley's Auto and Marine](https://www.sawleysautoandmarine.com.au/products/bmr7a-ngk-standard-compact-spark-plug-genuine-ngk-spark-plug)
> Updated: 2026-09-03