NGK Spark Plug R5673-8 3249

NGK Racing Spark Plug - R5673-8 / R56738 (4140)

Features:

• Designed to withstand the harshest engine conditions.

V-Power plugs feature a unique V-cut in the center electrode, directing the spark to the edge for:

• Faster spark development.
• Improved ignitability.
• Reduced quenching.
• Special insulator nose configuration enhances throttle response.
• Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.
• Corrugated ribs prevent flashover.
• Pure alumina silicate ceramic insulator provides superior strength and better heat transfer.
• Copper core aids in efficient heat removal.
• Triple seals prevent leakage.
• Sold individually.

Specifications:

• Part Number: 37-R5673-8
• NGK Reference Number: 4140
• Thread Reach: 11.2 mm (7/16")
• Thread Diameter: 14 mm
• Terminal Type: Fixed Terminal
• Electrode Material: V-Grooved Nickel
• Hex Spanner Size: 16 mm (5/8")
• Type: Non-Resistor
• Pack Size: Single Unit

Additional Information:
This racing spark plug is engineered for high-performance engines, providing superior ignitability, durability, and throttle response under extreme conditions. The V-groove design enhances combustion efficiency and power, making it ideal for racing applications that demand maximum reliability and performance.