NGK BUR5ET Spark Plug – Triple Ground, Resistor, 14 mm Thread
The NGK BUR5ET is a durable, resistor-type spark plug with three ground electrodes. It offers consistent ignition, better resistance to wear, and stable performance over a long service life. The design helps reduce misfires and fouling in daily use and light performance setups.
- Triple ground electrodes for steady spark under varied conditions
- Resistor design to cut electrical noise and protect electronics
- U-groove ground for efficient flame spread and reliable cold starts
Only use if your engine specifies a 14 mm, 19 mm reach, gasket-seat, multi-ground plug. Use the vehicle lookup to confirm fitment or see the Vehicle Fitment tab.
Technical Specifications
| Part Number | BUR5ET |
| NGK Stock Number | 3377 |
| GTIN | 087295133774 |
| Category | 686 – Spark Plug |
| Thread Diameter | 14 mm |
| Thread Pitch | 1.25 |
| Reach (Thread Length) | 19 mm |
| Seat Type | Flat seat with gasket |
| Hex Size | 20.8 mm (13/16 in) |
| Heat Range | 5 (NGK scale) |
| Electrodes | 1 centre, 3 ground |
| Electrode Material | Nickel alloy, U-groove ground |
| Resistor | Yes |
| Factory Gap | 0.8 mm |
| Terminal Type | Solid SAE |
| Recommended Tightening | 18-25 Nm (new gasket), or 1/2 turn after finger-tight |
| Typical Applications | Petrol engines specified for 14 mm x 1.25, 19 mm reach, gasket-seat, multi-ground plugs |
Installation Notes
– Fit to a cold engine and torque correctly. Do not over-tighten.
– Apply a clean, dry thread. Do not use anti-seize unless the manufacturer specifies it.
Do not re-gap multi-ground plugs – install with the factory gap unless the vehicle manufacturer states otherwise.
The price displayed is for a single plug, please add the desired amount to your basket.


