NGK SPARK PLUG FR9BI-11 4709
NGK Iridium IX Spark Plug FR9BI-11 features a 0.6 mm iridium center electrode tip for superior ignitability and a tapered ground electrode for optimal performance. It offers outstanding acceleration, high fuel efficiency, and long service life, designed for demanding engines. Specifications include a heat range of 9, 14 mm thread size, and a resistor type. This spark plug is sold individually and has trivalent metal plating for anti-corrosion and anti-seizing properties, corrugated ribs to prevent flashover, a pure alumina silicate ceramic insulator for strength and heat transfer, a copper core for heat removal, and triple seals to prevent leakage. OEM part numbers include 4709 and FR9BI11.
- SKU
- 37-FR9BI-11
- Brand
- NGK
- Availability
- In Stock (12)
FULL DESCRIPTION
NGK Iridium IX Spark Plug - FR9BI11
The NGK Iridium IX Spark Plug represents the pinnacle of high-performance ignition technology. Engineered for demanding applications, these spark plugs deliver exceptional ignitability and durability, ensuring optimal engine performance.
Key Features:
- 0.6 mm iridium center electrode tip: Provides superior ignitability without compromising longevity.
- Tapered ground electrode: Enhances flame kernel expansion for maximum performance in high-stress environments.
- Fine wire iridium and platinum tips: Contributes to stable idling, superior anti-fouling, slow wear rates, improved fuel efficiency, and reduced emissions.
- Trivalent metal plating: Offers excellent resistance to corrosion and seizing.
- Corrugated ribs: Designed to prevent flashover.
- Pure alumina silicate ceramic insulator: Provides enhanced strength and superior heat transfer capabilities.
- Copper core: Facilitates effective heat removal from the engine.
- Triple seals: Ensure leak-free operation.
- Designed for serious enthusiasts seeking outstanding acceleration, high fuel efficiency, and extended service life.
- Proven performance for demanding engines.
- Sold individually.
Specifications:
- Heat Range: 9
- Thread Size: 14 mm
- Type: Resistor
- Weight: 0.43 lbs


