NGK BKR6EKUB Spark Plug – Stock No. 3584
The NGK BKR6EKUB is a durable, twin-ground spark plug designed for clean, reliable ignition. It suits engines that specify a BKR6EKUB plug with a 14 mm thread and 19 mm reach.
Twin ground electrodes improve service life and keep the spark stable under load. The U-groove design helps form a stronger flame front for better combustion. A built-in resistor reduces electrical noise that can affect the radio or ECU.
Expect smooth starts, steady idle, and consistent performance in everyday driving. It is a robust upgrade over worn plugs, but it will not transform a healthy engine on its own.
- Twin-ground electrodes for long life and stable spark
- U-groove design for efficient ignition of the air-fuel mix
- Resistor type to protect vehicle electronics
| Part Number | BKR6EKUB |
| NGK Stock Number | 3584 |
| GTIN | 087295135846 |
| Category | 686 – Spark Plug |
| Thread Diameter | 14 mm |
| Thread Reach | 19 mm (3/4 in) |
| Hex Size | 16 mm |
| Seat Type | Flat seat with gasket |
| Heat Range | 6 (NGK scale) |
| Resistor | Yes |
| Electrode Configuration | Twin ground electrodes, U-groove |
| Centre Electrode | Nickel alloy with copper core |
| Factory Gap | Approx. 0.8 mm (preset) |
| Terminal Type | Solid terminal |
| Installation Torque | 18-25 Nm (with gasket, aluminium head) |
Fitment Guidance
Suitable for many petrol engines that specify NGK BKR6EKUB twin-ground plugs with 14 mm thread and 19 mm reach. Use the vehicle lookup to confirm fitment or check the Vehicle Fitment tab.
Installation Notes
– Fit to a cold engine and tighten to the specified torque.
– Do not force a gap change on twin-ground plugs.
– Always check manufacturer service data for exact torque and replacement intervals.
Warning: Cross-threading can damage the cylinder head. Start by hand and use the correct socket.
The price displayed is for a single plug, please add the desired amount to your basket.


