NGK FR5-1 Spark Plug (Stock No. 7252)
The NGK FR5-1 is a resistor spark plug for reliable ignition and stable idle. It uses NGK’s proven design to deliver clean combustion, good cold starts, and long service life. It is a sensible upgrade over tired plugs and a solid choice for regular maintenance.
Use this plug where your engine calls for an NGK FR5-1 or matching specifications. If you are unsure, use our vehicle lookup or see the Vehicle Fitment tab.
- Improves starting, throttle response, and fuel burn when replacing worn plugs
- Resistor design helps reduce electrical noise that can affect the ECU
| Part number | FR5-1 |
|---|---|
| NGK stock number | 7252 |
| Category | 686 – Spark Plug |
| GTIN | 87295172520 |
| Type | Resistor spark plug |
| Heat range | 5 (NGK scale) |
| Preset gap | 1.0 mm (-1 suffix) |
| Thread diameter | M14 x 1.25 |
| Thread reach | 19 mm |
| Hex size | 16 mm |
| Seat type | Gasket |
| Terminal | Standard SAE (supplied with terminal nut) |
| Centre electrode | Copper core with nickel alloy tip |
| Ground electrode | Standard single ground |
Fitment guidance
This plug suits many petrol engines that specify an NGK FR5-1 with M14 thread and 19 mm reach. Always confirm using the site’s vehicle lookup or check the Vehicle Fitment tab for full details.
Note: Always check and adjust the spark plug gap to your engine’s specification before installation.
The price displayed is for a single plug, please add the desired amount to your basket.


