NGK SPARK PLUG CR7HIX 7544
NGK CR7HIX 7544 spark plug is a performance-grade Iridium IX plug designed for enhanced durability and stable ignition in high-tech, high-performance engines. It features a copper core, an iridium fine-wire electrode, and advanced coatings to resist corrosion and flashover. The fine-wire iridium center electrode provides a consistent spark and high durability, with an iridium alloy electrode that has a high melting point suitable for modern high-efficiency engines. Trivalent metal plating offers enhanced anti-corrosion and anti-seizing characteristics. Corrugated ribs on the insulator prevent flashover, while the pure alumina silicate ceramic insulator provides superior strength and heat transfer. A copper core ensures effective heat dissipation, and triple seals prevent leakage. This is a resistor type plug to suppress interference. Specifications include a 5/8 inch (16mm) hex size, 10mm thread diameter, 1/2 inch (12.7mm) thread reach, projected insulator type, approximately 5kO resistor value, heat range 7, and a 0.028in (0.7mm) gap size. The center electrode tip is fine iridium, 0.6mm diameter. The ground electrode is single tapered cut nickel, and the seat type is gasket.
- SKU
- 37-CR7HIX
- Brand
- NGK
- Availability
- In Stock (91)
FULL DESCRIPTION
NGK SPARK PLUG CR7HIX 7544
The NGK CR7HIX spark plug is a performance-grade Iridium IX plug. It is engineered to provide superior ignition performance and extended longevity in demanding, high-performance engines. This spark plug features a robust copper core for efficient heat transfer, an ultra-fine iridium center electrode designed for consistent spark generation, and advanced coatings to combat corrosion and flashover.
Key Features:
- Iridium IX Performance: A fine-wire iridium center electrode ensures a stable spark and exceptional durability, even under high-performance conditions.
- High Melting Point: The iridium alloy electrode offers a very high melting point, making it ideal for modern, high-efficiency engine designs.
- Anti-Corrosion and Anti-Seizing: Trivalent metal plating provides excellent resistance to corrosion and helps prevent seizing.
- Flashover Prevention: Corrugated ribs on the insulator effectively prevent electrical flashover.
- Superior Insulation: A pure alumina silicate ceramic insulator delivers enhanced strength and optimal heat transfer capabilities.
- Effective Heat Dissipation: The integrated copper core ensures efficient dissipation of heat.
- Triple Seals: Triple sealing technology guarantees leak-free operation.
- Interference Suppression: Designed as a resistor type to effectively suppress electromagnetic interference.
Technical Specifications:
- Hex Size: 5/8 inch (16mm)
- Thread Diameter: 10mm
- Thread Reach: 1/2 inch (12.7mm)
- Insulator Type: Projected
- Resistor Value: Approximately 5kO
- Heat Range: 7
- Gap Size: 0.028 inches (0.7mm)
- Center Electrode: 0.6mm diameter fine iridium tip
- Ground Electrode: Single tapered cut nickel
- Seat Type: Gasket (flat)


