NGK BPR6EY-11 Spark Plug – Stock No. 4228
The NGK BPR6EY-11 is a dependable, copper-core spark plug designed for clean ignition and stable performance. It uses a projected insulator and a V-grooved nickel centre electrode to help the spark form easily, especially under light throttle. The built-in resistor cuts electrical noise that can affect the radio or ECU.
This is a good choice for routine maintenance or mild performance upgrades where a reliable, consistent spark is key. Expect smoother idle, easier cold starts, and steady combustion when the plug heat range and dimensions match your engine’s specification.
- Clean, consistent spark for smooth running and reliable starts
- Projected tip and V-groove aid ignitability and reduce fouling
- Resistor design reduces interference with modern electronics
| Part Category | 686 – Spark Plug |
| Part Number | BPR6EY-11 |
| NGK Stock Number | 4228 |
| GTIN | 087295142288 |
| Thread diameter | 14 mm |
| Thread pitch | 1.25 |
| Reach (thread length) | 19 mm |
| Hex size | 20.8 mm |
| Seat type | Flat seat – gasket |
| Heat range | 6 (NGK scale) |
| Resistor | Yes |
| Tip projection | Projected insulator (P) |
| Centre electrode | Nickel alloy, V-grooved (Y) |
| Core | Copper core for heat dissipation |
| Factory gap | 1.1 mm (-11) |
Fitment guidance
Suits many petrol engines that specify a 14 mm gasket-seat plug with 19 mm reach, NGK heat range 6, and 1.1 mm gap. Always check your owner’s manual and use our vehicle lookup or the Vehicle Fitment tab to confirm this exact part for your engine.
Note: Set the spark plug gap to your engine’s specification if it differs from the factory gap. Use a torque wrench and follow the correct tightening torque for a gasket-seat 14 mm plug.
The price displayed is for a single plug, please add the desired amount to your basket.


