NGK SPARK PLUG IMR8C-9H [3653], NG3653

NGK Iridium Racing IX Spark Plug – IMR8C9H / IMR8C-9H [3653]

Product Highlights:

• Features advanced iridium technology, with an electrode 25% smaller than platinum and 1/4 the size of conventional nickel electrodes.
• Ultra-fine 0.6 mm diameter center electrode reduces voltage requirements and extends ignition system life.
• Tapered ground electrode enhances flame core growth and ignition performance, improving acceleration and fuel efficiency.
• Enhanced anti-corrosion qualities with advanced metal shell plating.
• Sold individually.

Specifications:

• Heat Range: 8
• Thread Size: 10 mm
• Reach: 19 mm (3/4″)
• Hex Size: 5/8″ (16 mm)
• Seat Type: Gasket
• Terminal Type: Stud Terminal Threads
• Tip Configuration: Projected Tip
• Threaded Length: 12.7 mm (1/2″) Half Threaded
• Gap: .035″ (0.9 mm)
• Type: Resistor
• Units: Each
• Weight: 0.06 lbs

Compatible Models

Honda CRF250R:
2007 Honda CRF250R
2006 Honda CRF250R
2005 Honda CRF250R
2004 Honda CRF250R

Honda CRF250X:
2017 Honda CRF250X
2016 Honda CRF250X
2015 Honda CRF250X
2013 Honda CRF250X
2012 Honda CRF250X
2009 Honda CRF250X
2008 Honda CRF250X
2007 Honda CRF250X
2006 Honda CRF250X
2005 Honda CRF250X
2004 Honda CRF250X

Part Number Reference:

Part No.: 37-IMR8C9H

Additional Notes:

Extreme Long Life Laser Iridium Plug Features:

• Iridium Tipped Fine Wire Center Electrode: Enables a brighter, stronger spark with reduced voltage requirements.
• Platinum Tipped Tapered Cut Ground Electrode: Improves plug longevity while reducing quenching for better ignitability.
• Trivalent Metal Plating: Provides superior anti-corrosion and anti-seizing properties.
• Corrugated Ribs: Prevent flashover for consistent performance.
• Pure Alumina Silicate Ceramic Insulator: Enhances strength and heat transfer.
• Copper Core: Aids in heat removal for improved thermal stability.

• NOTE: Does not include terminal nut. If needed, order part #067606-0051.

NGK Iridium Racing IX plugs are ideal for high-performance applications, offering improved efficiency, reliability, and engine performance.