NGK IFR7G-11KS – Iridium Spark Plug for Honda Type-R

NGK IFR7G-11KS is a premium iridium spark plug engineered for high-performance Honda engines. Equipped with a 0.6 mm iridium center electrode, it delivers a powerful and consistent spark even at high RPM, ensuring precise combustion, improved throttle response, and extended service life. This plug is used as OEM equipment in Honda Type-R models fitted with K-series engines.

Applications and compatibility

• Honda Civic Type-R EP3 (2002–2005) – engine K20A2
• Honda Civic Type-R FN2 (2006–2011) – engine K20Z4
• Honda Integra Type-R DC5 (2001–2006) – engine K20A2

Replaces OEM Honda part numbers:
98079-571BV, 98079-5717V, 12290-PRB-A01, 12290-PRB-A02

Features and benefits of NGK IFR7G-11KS

• 0.6 mm iridium center electrode – ensures strong ignition performance and stable combustion under load.
• Long service life – up to 100 000 km thanks to iridium’s exceptional resistance to wear and heat.
• Efficient fuel burn – precise spark timing helps improve fuel economy and lower emissions.
• Anti-fouling design – NGK’s advanced insulator prevents carbon buildup and misfires.
• OEM specification – identical to the spark plugs installed from factory in Honda Type-R models.

FAQ – Frequently Asked Questions about NGK IFR7G-11KS

1. Is the NGK IFR7G-11KS an original Honda spark plug?
Yes. It is the same plug supplied to Honda for factory installation in K20A2 and K20Z4 engines used in Civic and Integra Type-R models.

2. What does the code IFR7G-11KS mean?
I = Iridium, F = 14 mm thread, R = Resistor, 7 = heat range, G = design type, 11 = 1.1 mm gap, KS = OEM Honda specification.

3. Can it be used in other K-series engines?
Yes, it fits most K20A/K20A2/K20Z4 engines with the same thread reach and heat range 7 rating.

4. How often should I replace these spark plugs?
Under normal conditions, NGK recommends replacement every 90 000–100 000 km. For tuned or high-boost engines, shorter intervals are advised.

5. Is the gap pre-set from factory?
Yes – the IFR7G-11KS is pre-gapped to 1.1 mm and ready for installation without adjustment.