NGK BKR7EQUP (Stock No. 4285) Quad-Ground Platinum Spark Plug
This NGK spark plug delivers a clean, reliable spark under hard use. The platinum centre electrode resists wear and keeps the spark stable over high mileage. Four ground electrodes help maintain the gap for longer, improving cold starts, idle quality and throttle response. It is a popular choice where a colder heat range is needed for tuned petrol engines.
- Stable spark and strong ignition under boost and high load
- Long service life thanks to platinum centre electrode
- Quad-ground design resists gap growth and fouling
| Part number | BKR7EQUP |
| NGK stock number | 4285 |
| GTIN | 087295142851 |
| Category | 686 – Spark Plug |
| Thread size | M14 x 1.25 |
| Reach (thread length) | 19 mm |
| Hex size | 16 mm |
| Seat type | Gasket |
| Heat range | 7 (NGK scale – colder than many OE plugs) |
| Resistor | Yes |
| Tip design | Projected, platinum centre electrode |
| Ground electrodes | 4 (quad-ground) |
| Factory gap | 0.8 mm (approx. 0.032 in) |
| Terminal type | Solid nut |
| Recommended tightening (M14 gasket) | 18-25 Nm on aluminium heads |
Do not attempt to re-gap this multi-ground plug. The set gap is fixed by the four ground electrodes.
Fitment guidance:
– Suits engines that specify an M14 x 1.25, 19 mm reach, gasket-seat, projected-tip plug in NGK heat range 7.
– Often used where a one-step-colder plug is recommended on tuned petrol engines.
Use our vehicle lookup or the Vehicle Fitment tab to confirm exact compatibility before purchase.
The price displayed is for a single plug, please add the desired amount to your basket.


