NGK DILKAR7Q8 Laser Iridium Spark Plug (Stock No. 91899)
This NGK Laser Iridium plug delivers reliable ignition and stable combustion, even under hard use. The fine iridium tip needs less voltage to spark, helping cold starts and throttle response. A platinum ground pad improves durability, so performance stays consistent over a long service life.
It is a resistor-type plug to reduce electrical noise, protecting sensitive ECU and sensor signals. The design is projected to place the spark in a better position in the chamber for clean burn and efficiency.
Use our vehicle lookup to confirm fitment, or check the Vehicle Fitment tab for full details.
- Fine iridium centre electrode for a strong, consistent spark
- Platinum-ground design for long life and sustained performance
| Part Number | DILKAR7Q8 |
| NGK Stock Number | 91899 |
| GTIN | 87295918999 |
| Category | 686 – Spark Plug |
| Plug Type | Laser Iridium (Iridium centre, Platinum ground) |
| Heat Range | 7 (NGK scale) |
| Gap | 0.8 mm |
| Resistor | Yes |
| Thread Diameter | 12 mm |
| Reach | 26.5 mm |
| Hex Size | 16 mm |
| Seat Type | Flat seat with gasket |
| Electrodes | 1 ground electrode |
| Projection | Projected insulator |
| Terminal | Solid |
Tip: Always install to the correct torque and never force-adjust the fine iridium tip. Use the specified gap shown above unless your tuner specifies otherwise.
The price displayed is for a single plug, please add the desired amount to your basket.


