NGK SPARK PLUG ZFR7F-11, NG6855

NGK Copper Core Spark Plug – ZFR7F-11 / ZFR7F11 (2975)

Features:

V-Power Plug with a unique V-grooved center electrode that directs the spark to the edge of the electrode for:

• Faster spark development.
• Improved ignitability, even in lean burn conditions.
• Copper core for enhanced heat dissipation and consistent performance.
• Extended projected tip improves combustion efficiency and power output.
• ISO-length design with solid terminal nut for a secure connection.

Traditional NGK features include:

• Corrugated ribs to prevent flashover.
• Pure alumina silicate ceramic insulator for superior strength and heat transfer.
• Triple interior seal for maximum reliability.
• Designed for optimal ignition in a wide range of applications.
• Sold individually.

Specifications:

• Part Number: 37-ZFR7F-11
• NGK Reference Number: 2975
• Heat Range: 7
• Thread Size: 14 mm
• Thread Reach: 19 mm (3/4″)
• Hex Spanner Size: 16 mm (5/8″)
• Seal Type: Gasket Seat
• Terminal Type: Fixed Terminal
• Electrode Material: V-Grooved Copper Core
• Projection Type: Projected
• Tip Configuration: Single Electrode
• Gap: 0.043″ (1.1 mm)
• Type: Resistor
• Pack Size: Single Unit

Additional Information:
The NGK ZFR7F-11 V-Power Plug delivers reliable ignition and improved performance, even under lean burn conditions. Its copper core, V-grooved electrode, and advanced design ensure better combustion, durability, and efficiency. Ideal for applications requiring a strong, consistent spark and dependable operation in varied conditions.