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.

Majority of our listings are for a direct replacement for your original part.

Our parts are made of quality and are designed to meet or exceed the original OEM Standards.

Our products are often a cost effective alternative to genuine OEM Parts.

Please note: the models of bike we state in our listings are for general guidance only. Please make sure this item will fit your bike before purchasing. Also, we cannot guarantee fitment to any non-UK models.