The Nissan RB20DE(T) is a versatile engine known for its responsiveness and tuning capability, and when boost and power levels are increased, selecting the right spark plug becomes essential. The HKS Super Fire Spark Plug M-Series, equivalent to NGK range 7, is specifically engineered for turbocharged applications where controlling heat and ensuring reliable ignition are critical. Built with a high-durability iridium alloy and advanced electrode design, these plugs provide consistent combustion stability while withstanding the extreme cylinder pressures and temperatures created under boost.
For turbo engines, heat range plays a decisive role in both performance and long-term engine health. While lower ranges such as 5 or 6 are appropriate for stock or lightly boosted setups, a colder range 7 plug is the proven choice for higher boost applications. Its ability to dissipate excess heat reduces the risk of detonation or pre-ignition, protecting critical engine components during sustained high-load driving or aggressive acceleration. This makes the M-Series range 7 plug an ideal upgrade for enthusiasts who demand more from their RB20 without compromising reliability.
The M-Series spark plug also offers longevity and precision unmatched by conventional designs. It supports smooth starts, stable idling, and responsive throttle control while enduring the intense heat and vibration of a performance build. For RB20DET owners aiming for a balance of power, durability, and safety, this plug ensures your ignition system is as strong as the rest of your setup.
At Terra Firma Automotive, we supply genuine HKS Super Fire Spark Plugs so you can equip your RB20DE(T) with the proven components trusted worldwide for high-performance applications.
- Sold As Each Individual Spark Plug
- Wrench Size Needed 16mm
- Thread Size 14×19mm
- For RB20 made after 09.1991
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