NGK BP5ES Spark Plug – Stock No. 6511
The NGK BP5ES is a reliable, copper-core spark plug with a projected insulator nose for clean combustion and steady idle. It is a standard, non-resistor plug designed for engines that specify a heat range 5 NGK plug with a 14 mm thread and 19 mm reach.
It suits many older and classic petrol engines that use a flat-gasket seat and long-reach plug. Use our vehicle lookup or check the Vehicle Fitment tab to confirm.
Always set the gap and heat range to the engine maker’s spec. Do not rely on the factory preset if your manual says otherwise.
- Strong cold starting and smooth idle
- Good thermal control for everyday road use
- Durable nickel alloy electrodes
Technical Specifications
| Part Number | BP5ES |
| NGK Stock Number | 6511 |
| GTIN | 087295165119 |
| Category | 686 – Spark Plug |
| Thread Diameter | 14 mm |
| Thread Reach | 19 mm (3/4 in) |
| Hex Size | 20.8 mm (13/16 in) |
| Seat Type | Flat seat with gasket |
| Heat Range | 5 (NGK scale) |
| Resistor | No (non-resistor) |
| Centre Electrode | Copper core, nickel alloy tip |
| Ground Electrode | Standard J-type, nickel alloy |
| Insulator | Projected type |
| Factory Gap | 0.8 mm (check and adjust to spec) |
| Terminal Type | Solid terminal |
| Seat Gasket | Included |
| Typical Torque | 18-25 Nm on aluminium heads (with gasket), follow OE spec |
Fitment Guidance
If your engine calls for an NGK BP5ES or exact equivalent (14 mm x 19 mm, gasket seat, non-resistor, projected tip), this plug is suitable. For best results, confirm fitment with the site’s vehicle lookup or see the Vehicle Fitment tab.
The price displayed is for a single plug, please add the desired amount to your basket.






