The NGK Spark Plugs IFR9H-11 is a premium iridium spark plug designed to provide dependable ignition, consistent engine performance, and long service life. Manufactured by NGK Spark Plugs, this spark plug features a fine iridium tip that supports a stable spark and high durability under demanding operating conditions. Its ultra-small-diameter center electrode helps reduce the voltage required for ignition while supporting longer ignition system life.
Designed for compatible automotive applications, the IFR9H-11 helps promote responsive acceleration, efficient fuel use, and reliable starting. Trivalent metal plating provides strong resistance to corrosion and helps reduce the risk of seizing during removal or service. The plated metal shell also delivers enhanced anticorrosion protection, making this plug well suited for engines exposed to heat, moisture, and varied driving conditions.
Use the NGK Spark Plugs IFR9H-11 only when it matches the vehicle manufacturer’s specified application, heat range, thread configuration, and ignition requirements. Verify fitment against the vehicle year, make, model, engine, and original equipment specifications before installation. This product is identified by NGK Spark Plugs manufacturer and vendor part number 6588.
Features:
- Fine iridium tip: Provides high durability and a consistently stable spark
- Trivalent metal plating: Helps resist corrosion and reduces the risk of seizing
- Reliable engine performance: Supports responsive acceleration, fuel efficiency, and long service life
- Ultra-small-diameter center electrode: Reduces ignition voltage requirements and helps extend ignition system life
- Enhanced shell protection: Plated metal shell improves resistance to corrosion
- Application fitment: Designed for compatible automotive engines; verify vehicle-specific fitment before installation