NGK Iridium Spark Plug #8– Honda Civic Type R (FK8/FL5) – K20C1
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NGK Iridium Spark Plug – 12mm x 1.25mm | Extended Reach
NGK’s Iridium Spark Plug is purpose-built for performance-focused drivers. Featuring a fine-wire iridium centre electrode, this plug delivers superior spark stability and exceptional durability under high-heat, high-RPM conditions — ideal for today’s high-performance Australian vehicles.
Key Features
- Fine-wire iridium centre electrode for consistent spark and long service life
- Platinum ground electrode ensures extended durability
- Trivalent metal plating resists corrosion and seizing
- Corrugated ribs prevent electrical flashover
- Alumina silicate ceramic insulator offers excellent strength and heat dissipation
- Copper core enhances heat transfer for stable combustion
- Triple-seal design eliminates gas leakage for maximum reliability
Product Specifications
| Thread Diameter | 12mm |
| Thread Pitch | 1.25mm |
| Reach | 26.5mm (1.04") |
| Seat Type | Gasket |
| Hex Size | 9/16" (14mm) |
| Terminal Type | Solid |
| Gap | 0.8mm (0.031") |
| Resistor | Yes – 5k Ohm |
| Heat Range | 8 |
| Centre Electrode | Iridium, 0.6mm Fine Wire |
| Projection | Extended |
| Ground Electrode | Platinum |
| Torque Spec | Cast Iron: 10.8–18 lb.ft / Aluminium: 10.8–14.5 lb.ft |
Additional Information
- Brand: NGK / NTK
- Part Type: Iridium Spark Plug
- Warranty: 60 Days
- Service Life: Up to 160,000km (100,000 miles)
- Sold individually
Note: Please confirm correct fitment for your vehicle before purchase. Suitable for performance applications across various Japanese and European platforms.
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