The NGK Spark Plugs BMR4A spark plug is designed to provide dependable ignition performance and consistent operation in compatible small engines and equipment. Manufactured by NGK Spark Plugs, this spark plug uses a copper-core design to help transfer heat efficiently from the firing end, supporting stable operation across varying engine conditions.
A trivalent metal plating helps resist corrosion and seizing while reducing the need for additional anti-seize treatment during installation. The pure alumina silicate ceramic insulator provides strength and effective heat transfer, while triple sealing helps prevent combustion-gas and moisture leakage. Corrugated insulator ribs also help reduce the risk of flashover for reliable ignition performance.
Fitment: The NGK Spark Plugs BMR4A is intended for compatible small engines, outdoor power equipment, and other applications specified by the equipment manufacturer. Confirm the required plug model and heat range before installation. This product is identified by NGK manufacturer part number 5728 and vendor part number 5728.
Features:
- Brand: NGK Spark Plugs
- Model: BMR4A
- Manufacturer part number: 5728
- Vendor part number: 5728
- Application: Compatible small engines and outdoor power equipment
- Plating: Trivalent metal plating for corrosion resistance and reduced seizing
- Insulator: Pure alumina silicate ceramic for strength and heat transfer
- Sealing: Triple seals help prevent leakage
- Ignition protection: Corrugated ribs help prevent flashover
- Heat control: Copper core aids in heat removal