NGK PFR7B Laser Platinum Spark Plug – 4853
The NGK PFR7B is a high-quality Laser Platinum spark plug designed for reliable ignition and stable performance. It uses a fine platinum centre electrode and a platinum-tipped ground electrode for long life and consistent spark, even under higher cylinder pressures found in tuned engines.
This is a colder NGK heat range 7 plug. It can help manage combustion temperatures in performance setups, while still working smoothly in suitable standard engines. Always confirm fitment before purchase.
- Strong, reliable ignition under load
- Platinum centre and ground for long service life
- Resistor design reduces electrical noise for clean ECU signals
| Part number | PFR7B |
| NGK stock number | 4853 |
| GTIN | 087295148532 |
| Category | 686 – Spark Plug |
| Plug type | Laser Platinum (double platinum) |
| Heat range (NGK) | 7 (colder than standard in many applications) |
| Resistor | Yes |
| Thread diameter | 14 mm |
| Thread reach | 19 mm |
| Seat type | Gasket |
| Hex size | 16 mm |
| Centre electrode | Fine platinum tip |
| Ground electrode | Platinum pad |
| Tip | Projected |
| Factory gap | 0.8 mm (check and adjust if required) |
| Terminal | Solid (non-removable) |
Fitment guidance
This specification is commonly used in select high-performance petrol engines that require a 14 mm, 19 mm reach, gasket-seat plug with a colder heat range. Use the site’s vehicle lookup to confirm, or check the Vehicle Fitment tab for full details.
Important: Always check the required heat range, reach, seat type, and gap for your specific engine. Incorrect plug geometry can cause engine damage.
The price displayed is for a single plug, please add the desired amount to your basket.


