NGK IFR5T11 Laser Iridium Spark Plug (Stock No. 4996)
The NGK IFR5T11 is a Laser Iridium spark plug designed for reliable ignition, smooth idle, and long service life. Its fine-wire iridium centre electrode needs less voltage to spark, which helps cold starts and keeps performance consistent as the plug ages. A platinum pad on the ground electrode resists wear, so the gap stays stable for longer.
Choose this plug if your engine specifies NGK IFR5T11. It is a high-quality OE-grade part aimed at steady power delivery and dependable efficiency rather than dramatic gains. Replace as a set for even running. Always confirm compatibility with the vehicle lookup or the Vehicle Fitment tab.
Why it matters
- Strong, consistent spark for smoother running and better throttle response.
- Long life design helps maintain performance over more miles.
- Stable gap reduces misfires and helps fuel economy stay on target.
| Manufacturer | NGK |
|---|---|
| Part number | IFR5T11 |
| NGK stock number | 4996 |
| Category | 686 – Spark Plug |
| GTIN | 087295149966 |
| Type | Laser Iridium (iridium centre, platinum ground) |
| Resistor | Yes |
| Heat range | NGK 5 (medium) |
| Factory gap | 1.1 mm |
| Electrode design | Fine-wire iridium centre for lower firing voltage |
| Typical service life | Up to 60,000 miles (96,000 km) in normal use |
Important: Only use IFR5T11 where specified by the engine manufacturer. Check and set the gap to 1.1 mm if required, but avoid levering on the fine iridium tip. Fit to clean threads and tighten to the correct torque for your engine.
The price displayed is for a single plug, please add the desired amount to your basket.


