NGK IFR5E11 – Laser Iridium Spark Plug (Stock No. 7994)
The NGK IFR5E11 is a Laser Iridium spark plug designed for reliable ignition and long service life. It uses a fine iridium centre tip for a strong, consistent spark, with a platinum pad on the ground electrode to reduce wear.
This plug helps cold starts, smooth idle, and stable performance under load. It is suitable for daily driving and mildly tuned petrol engines that specify this exact part.
- Fine iridium tip needs less voltage, improving ignition under tough conditions.
- Platinum ground pad and iridium centre reduce erosion for longer life.
| Part number | IFR5E11 |
| NGK stock number | 7994 |
| Category | 686 – Spark Plug |
| GTIN | 87295179949 |
| Technology | Laser Iridium (iridium centre, platinum ground) |
| Resistor | Yes |
| Heat range | 5 (NGK scale) |
| Factory gap | 1.1 mm |
| Seat type | Gasket |
Fitment guidance
Use this plug only where IFR5E11 is specified by the vehicle manufacturer. It is commonly used in various Japanese petrol engines. Please use our vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details.
Installation notes
– Always check and adjust the gap only if the vehicle manufacturer allows it. Iridium tips are delicate.
– Follow the correct torque for your engine’s cylinder head material.
– Replace all plugs in a set for even performance.
The price displayed is for a single plug, please add the desired amount to your basket.


