NGK BKR5EZ Spark Plug – Stock No. 7642
The NGK BKR5EZ is a reliable, nickel-alloy spark plug with a V-grooved centre electrode for a clean, consistent spark. It helps cold starts, smooth idle, and stable performance in everyday driving. The projected tip improves flame spread, while the built-in resistor reduces electrical noise that can affect the ECU and audio systems.
- V-groove design helps the spark jump more easily for better ignition under load.
- Projected tip aids combustion stability and throttle response.
- Resistor construction reduces interference with vehicle electronics.
| Part Number | BKR5EZ |
| NGK Stock Number | 7642 |
| GTIN | 87295176429 |
| Category | 686 – Spark Plug |
| Thread Diameter | 14 mm |
| Thread Pitch | 1.25 mm |
| Reach | 19 mm |
| Hex Size | 16 mm |
| Seat Type | Gasket |
| Heat Range | 5 (NGK scale) |
| Resistor | Yes |
| Tip Style | Projected |
| Centre Electrode | Nickel alloy with V-groove |
| Ground Electrode | Standard ground strap |
| Factory Gap | 0.8 mm approx. (check and set to vehicle spec) |
| Typical Torque | 18-25 Nm for M14 gasket seat |
Fitment Guidance
Suitable for many petrol engines that use a 14 mm thread, 19 mm reach, gasket seat, projected-tip plug. Common across various Japanese and European 4-cylinder applications. Use the site’s vehicle lookup to confirm, or check the Vehicle Fitment tab for full details.
Installation notes: Always confirm the gap to your manufacturer’s spec and tighten to the correct torque on a cold engine. Avoid over-tightening.
The price displayed is for a single plug, please add the desired amount to your basket.


