NGK Racing Plug R0409B-8 7791

NGK Iridium IX Spark Plug - R0409B8

Features:

• The ultimate in spark plug technology and performance from the industry leader.
• Iridium electrode is 25% smaller than a platinum electrode and 1/4 the size of a conventional nickel electrode.
• Ultra-small diameter center electrode reduces voltage requirements, extending the life of the ignition system.
• Enhanced metal shell plating for improved corrosion resistance.
• Fine wire iridium center electrode ensures a stronger spark and better ignition performance.
• Designed to withstand extreme racing environments.
• Sold individually.

Specifications:

• Part Number: 37-R0409B-8
• NGK Reference Number: 7791
• Heat Range: 4
• Thread Size: 10 mm
• Thread Length: Half Thread Type - 12.7 mm (1/2") Threaded
• Total Reach: 19 mm (3/4")
• Hex Spanner Size: 16 mm (5/8")
• Seal Type: Gasket Seat
• Terminal Type: Stud Terminal Threads (Terminal Nut Not Included)
• Electrode Material: Ultra-Fine Iridium Center Electrode, Fine Wire Nickel Angled Ground Electrode
• Gap: 0.028" (0.7 mm)
• Units Sold: Each
• Weight: 0.06 lbs

Compatible Honda Models:

• CRF250R: 2005, 2006, 2007, 2008, 2009

Additional Information:

• Fine wire racing plugs provide a stronger spark from your existing ignition system.
• The recessed iridium center electrode reduces voltage requirements for ionization, resulting in a stronger spark for better air-fuel mixture ignition.
• Handcrafted in Japan for exceptional durability and performance under extreme conditions.

Notes:

• If a terminal nut is required, order part #067606-0051.

This spark plug delivers superior ignition performance, extended durability, and optimized engine power, making it ideal for high-performance racing applications and Honda CRF250R models.