NGK LFR4AP-11 Spark Plug (Stock No. 5613)
The NGK LFR4AP-11 is a high quality platinum spark plug designed for reliable ignition and long service life. It uses a fine centre electrode to improve spark efficiency, especially during cold starts and light throttle. The built-in resistor helps reduce electrical noise that can affect the radio or ECU.
This plug suits everyday driving and gentle performance upgrades. Expect smoother idle, consistent combustion, and stable performance over a long mileage interval compared with standard copper plugs. Replace as a full set for best results.
Use our vehicle lookup to confirm compatibility, or check the Vehicle Fitment tab for full details.
| Part number | LFR4AP-11 |
|---|---|
| NGK stock number | 5613 |
| Category | 686 – Spark Plug |
| GTIN | 087295156131 |
| Plug type | Platinum centre electrode |
| Resistor | Yes |
| Heat range | NGK 4 |
| Factory gap | 1.1 mm (-11 suffix) |
| Electrode design | Fine-wire centre, tapered ground |
| Seat style | Gasket seat |
| Terminal | Solid terminal nut |
| Typical benefits | Improved cold starts, stable idle, longer service life vs. standard copper |
Why choose this plug
- Fine platinum tip focuses the spark for cleaner combustion and better throttle response.
- Resistor design reduces interference with vehicle electronics.
- Built to NGK’s OE standards for consistent performance over time.
Important: Always confirm fitment for your exact engine. Install to the vehicle maker’s torque spec. Check and adjust the gap only if your service manual allows.
The price displayed is for a single plug, please add the desired amount to your basket.


