For owners of the Nissan Silvia and 180SX S13 running the CA18 engine, choosing the correct spark plug is critical for long-term performance and reliability. This original Nissan spark plug with NGK heat range 6 offers the proper balance of combustion efficiency and durability, making it the ideal choice for turbocharged and high-performance applications. Unlike hotter plugs that retain more heat, a colder range 6 plug effectively transfers excess heat away from the combustion chamber, protecting against pre-ignition and detonation—two of the most damaging conditions for boosted engines.
The CA18 is a precision-built engine, and maintaining the correct spark plug heat range ensures smooth operation under both daily driving and spirited performance. A heat range 6 plug provides the necessary safeguard against high cylinder pressures and elevated combustion temperatures often encountered in turbo setups, while still delivering reliable ignition response. Using an incorrect plug can lead to fouling, misfires, or even catastrophic engine failure under load, making proper selection essential.
At Terra Firma Automotive, we provide genuine OEM spark plugs designed specifically for the CA18 to ensure optimal performance, reliability, and longevity. Whether your Silvia or 180SX is stock or lightly modified, the correct NGK range 6 plug ensures your engine runs efficiently and stays protected during demanding conditions.
- Sold as each, 4 required.
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