Description
Overview:
The NGK BR9EIX IX Iridium Plug (NGK No. 3981) is a high-quality spark plug designed to deliver a strong, consistent spark in petrol engines used across vehicles and machinery. Built with a fine-wire iridium centre electrode, it promotes efficient combustion for smooth running and reliable starting. The robust metal shell and durable ceramic insulator help it cope with heat, vibration, and challenging operating conditions. Suitable for many two-stroke and four-stroke engines where BR9EIX is specified, it is a dependable replacement for worn plugs in motorcycles, scooters, karts, generators, and compact construction or garden equipment. Its resistor design helps reduce electrical interference with modern ignition systems, supporting stable performance and clean running over an extended service life. Marking: BR9EIX, MPN 3981.
Key Features:
- Fine-wire iridium centre electrode for a strong, focused spark and efficient combustion
- Long service life compared with standard nickel plugs, helping reduce maintenance intervals
- Designed to withstand high temperature and pressure for stable performance under load
- Resistor-type construction helps minimise electrical interference with onboard electronics
- Good anti-fouling characteristics to cope with frequent starts and stop-start use
- Supports easier cold starts and smoother idle when the engine and ignition are in good condition
- Consistent performance across a wide range of operating conditions, including heavy vibration
- Ready to fit and compatible with common spark plug sockets for straightforward installation
Typical Applications:
For petrol engines that specify NGK BR9EIX, including many motorcycles, scooters, karts, and performance two-stroke engines, plus small plant such as generators and pumps. Also suitable for selected garden and groundcare machinery where this plug code is called for. Always confirm compatibility with the engine manufacturer's specifications.
Also known as:
Spark plug, ignition plug, iridium spark plug, resistor spark plug, fine-wire plug, engine plug, NGK 3981, BR9EIX plug.
Product Specifications
| L&S Part No. | BR9EIX |
|---|---|
| Manufacturer | NGK |
| OEM No. | 3981 |
| Unit of Sale | 1 |
Reviews
Ask a Question
Compatibility
Customers also bought
-
![]()
Assorted Metric Flange Nuts Sizes: M5-M12 (Box of 225)£13.18 £10.98 -
![]()
Assorted Metric Nyloc Nuts Sizes: M5-M16£14.78 £12.32
