| Product Type | Spark Plug |
|---|---|
| Product Group | Ignition & Electrical Parts |
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 (oro2u.com)
- 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.
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