NGK BP7FS Spark Plug – Stock No. 3612
The NGK BP7FS is a non-resistor, projected-tip copper spark plug designed for stable ignition under sustained load. It offers strong cold starting, good throttle response, and reliable performance in engines that specify a colder NGK heat range 7 plug.
- Projected tip helps burn off deposits and resists fouling.
- Colder heat range (7) supports higher temperatures seen in spirited driving or lightly tuned engines.
- Copper core and nickel alloy shell provide consistent spark and durability.
Note: This is a non-resistor plug. If your vehicle requires an R (resistor) plug for radio interference suppression or ECU protection, do not substitute.
| Part Number | BP7FS |
| NGK Stock Number | 3612 |
| GTIN | 087295136126 |
| Category | 686 – Spark Plug |
| Thread Diameter | 14 mm |
| Thread Reach (to gasket seat) | 19 mm |
| Hex Size | 20.8 mm (13/16 in) |
| Seat Type | Flat seat with gasket |
| Construction | Copper core, nickel alloy, projected insulator nose |
| Heat Range | 7 (NGK scale – colder than 6) |
| Resistor | No |
| Terminal Type | Solid terminal |
| Ground Electrode | Standard J-type |
| Factory Gap | Varies by application – set to the vehicle maker’s spec |
Fitment guidance
Use this plug only where BP7FS is specified by the engine or vehicle maker. It is commonly specified for certain classic and performance-oriented engines needing a non-resistor, projected-tip, 14 mm gasket-seat plug with 19 mm reach. Please use the vehicle lookup to confirm compatibility, or check the Vehicle Fitment tab for full details.
Installation tips
– Check and set the gap to the specification for your engine.
– Fit a new gasket and torque to the manufacturer’s setting to avoid leaks or thread damage.
The price displayed is for a single plug, please add the desired amount to your basket.



