NGK SPARK PLUG CR8EH-9 5666

NGK Spark Plug CR8EH-9 (5666)

The NGK CR8EH-9 is a special half-threaded spark plug engineered for optimal performance in various engines. Featuring a robust copper core and a pure alumina silicate ceramic insulator, this spark plug is built for durability and efficient heat dissipation, ensuring stable ignition even under high temperatures.

Key Features:

• Efficient Heat Dissipation: The copper core rapidly dissipates heat, cooling the electrode and insulator tip for improved engine performance.
• High Conduction Copper: Offers a raised pre-ignition rating and a long nose insulator for stable ignition in demanding conditions.
• Designed for High-Performance: Meets the specific requirements of high-performance engines for consistent operation.
• Half Thread Design: Features a half-thread configuration for a precise and secure fit in compatible engines.
• Durable Construction: Corrugated ribs prevent flashover, while the alumina silicate ceramic insulator provides superior strength and enhanced heat transfer.
• Leakage Prevention: Triple seals work in conjunction with the copper core to prevent interior leakage and further aid heat removal.

Specifications:

• Heat Range: 8
• Thread Size: 10mm
• Type: Resistor
• Reach: 19mm (3/4")
• Hex Size: 5/8" (16mm)
• Seat Type: Gasket
• Gap: 0.035" (0.9mm)
• Thread Type: Half Thread (12.7mm / 1/2" threaded)
• Terminal Type: Stud Terminal Threads (Terminal Nut not included)
• Weight: 0.06 lbs
• Units Sold: Single
• Alternate/OEM Part Numbers: 5666, CR8EH-9