NGK Racing Spark Plug Box of 4 (R5674-7)

NGK Racing spark plugs are designed with extreme use in mind and meant to withstand the most grueling racing conditions. NGK Spark Plugs have been powering racing champions and can be found in every racing venue throughout the world. The center electrode of the NGK Racing spark plugs has special configurations and designs to ensure durability and ignitability. NGK Racing plugs bring ultra high performance in a variety of heat ranges. Special configurations are used for a wide variety of racing applications. NGK Racing spark plugs are designed with extreme use in mind and meant to withstand the most grueling racing conditions. NGK Spark Plugs have been powering racing champions and can be found in every racing venue throughout the world. I/O - 1980-1968 CRUSADER, 1993-1975 FLAGSHIP

• TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
• Pure alumina silicate ceramic insulator provides superior strength and better heat transfer
• Special insulator nose configurations improve throttle response
• Corrugated ribs prevent flashover
• Copper core aids in heat removal
• Triple seals prevent leakage

NGK R5674-7 Racing Spark Plugs are engineered for demanding high-performance and racing applications where durability, reliable ignition, and consistent operation are essential. Designed to withstand grueling racing conditions, these NGK Racing spark plugs have powered champions across racing venues worldwide. The specially configured center electrode promotes dependable ignitability and long-lasting performance across a variety of heat ranges.
These automotive spark plugs are suitable for select Crusader and Flagship applications, including Crusader models from 1968 through 1980 and Flagship models from 1975 through 1993. The NGK Racing Part Number 5034 set includes four spark plugs, making it a convenient choice for performance engine service or replacement. Their specialized insulator nose configuration is designed to support improved throttle response, while the copper core helps transfer heat away from the firing end for dependable operation under demanding conditions.

• Trivalent metal plating: Provides superior anti-corrosion and anti-seizing properties for easier installation and removal


• Pure alumina silicate ceramic insulator: Delivers high strength and efficient heat transfer


• Special insulator nose configuration: Helps improve throttle response in performance applications


• Corrugated ribs: Help prevent flashover for more reliable ignition performance


• Copper core: Aids in heat removal during demanding engine operation


• Triple seals: Help prevent leakage and support dependable plug performance

Choose NGK R5674-7 Racing Spark Plugs when your engine requires a purpose-built ignition component developed for severe operating conditions. The combination of racing-focused electrode design, thermal control, corrosion resistance, and sealing technology makes this four-piece set a reliable option for performance-oriented automotive applications.

Features:

• Trivalent metal plating provides superior anti-corrosion and anti-seizing properties for easier installation and removal

• Pure alumina silicate ceramic insulator delivers high strength and efficient heat transfer

• Special insulator nose configuration helps improve throttle response

• Corrugated ribs help prevent flashover for reliable ignition performance

• Copper core aids in heat removal during demanding engine operation

• Triple seals help prevent leakage and support dependable performance

• Designed for demanding racing and high-performance automotive applications

• Box of 4 NGK R5674-7 racing spark plugs