NGK Iridium IX Spark Plug – BPR7HIX (5944)
The NGK BPR7HIX is a high-quality iridium spark plug for reliable ignition under tough conditions. It offers a strong, stable spark, better cold starts, and improved resistance to fouling. The fine iridium tip needs less voltage to fire, which helps under load and at high rpm. It is a good choice for engines that specify a BPR7 heat range and benefit from a colder plug for performance or hard use.
This plug suits many motorcycles and small performance engines that require an NGK BPR7-type plug with a gasket seat. Always confirm fitment with the vehicle lookup or the Vehicle Fitment tab.
- Fine 0.6 mm iridium centre electrode for a clean, consistent spark
- Projected tip helps combustion and throttle response
- Resistor design protects sensitive electronics from interference
- Trivalent shell plating for corrosion resistance and easy removal
Technical Specifications
| Part Number | BPR7HIX |
| NGK Stock Number | 5944 |
| GTIN | 087295159446 |
| Category | 686 – Spark Plug |
| Series | Iridium IX |
| Heat Range | 7 (colder than 6) |
| Thread Diameter | 14 mm |
| Thread Reach | 12.7 mm (H) |
| Hex Size | 20.8 mm (13/16 inch) |
| Seat Type | Flat seat with gasket |
| Resistor | Yes |
| Centre Electrode | Iridium tip, approx. 0.6 mm |
| Ground Electrode | Nickel alloy, tapered cut |
| Terminal | Solid terminal |
| Factory Gap | Typically 0.8 mm (set to your vehicle spec) |
Note: Check and set the gap to your vehicle specification. Do not over-bend the fine iridium tip. Use the vehicle manufacturer’s torque settings.
The price displayed is for a single plug, please add the desired amount to your basket.


