NGK LFR5AP-11 Spark Plug (Stock No. 4775) – Platinum, 1.1 mm Gap
The NGK LFR5AP-11 is a high-quality platinum spark plug designed for reliable ignition and long service life. It offers stable performance in daily driving and light performance use, with a medium heat range that suits many modern petrol engines.
It uses a fine platinum centre electrode for strong spark with less voltage, helping cold starts, idle quality and fuel efficiency. A resistor reduces radio interference and protects sensitive electronics.
Key benefits
- Platinum centre electrode for longer life vs standard copper plugs
- Stable spark and smoother idle, especially on cold starts
- Resistor design to protect ECU and reduce electrical noise
- Pre-set 1.1 mm gap to match many OEM specs
Specifications
| Manufacturer | NGK |
| Part number | LFR5AP-11 |
| NGK stock number | 4775 |
| GTIN | 087295147757 |
| Category | 686 – Spark Plug |
| Type | Platinum-tipped centre electrode, resistor |
| Heat range (NGK) | 5 |
| Spark gap | 1.1 mm (pre-set) |
| Thread diameter | 14 mm |
| Thread pitch | 1.25 |
| Reach (thread length) | 19 mm |
| Hex size | 16 mm |
| Seat type | Gasket (washer) |
| Insulator | Projected tip |
| Recommended tightening torque | 18-25 Nm (aluminium head, 14 mm gasket seat) |
| Construction | Copper core, nickel shell, anti-corrosion plating |
Fitment guidance
Common on many Nissan, Infiniti and Subaru petrol engines that specify NGK LFR5A-11/LFR5AP-11 or equivalent. Use the vehicle lookup to confirm exact fitment, or check the Vehicle Fitment tab for full details.
Note: Always check your owner’s manual or existing plug code for the correct heat range, reach and gap before installation.
The price displayed is for a single plug, please add the desired amount to your basket.


