Spark Plug – NGK Iridium CR9EHI-9

NGK Iridium spark plugs currently represent the highest technical solution on the market. Thanks to their unique properties and the use of precious metals, they ensure better engine performance, easier starting, and a service life that is, on average, twice as long as conventional nickel spark plugs.
 

Key Features:

• Iridium Technology: The center electrode features an iridium alloy tip, welded using a specialized laser process. Iridium is one of the world's hardest metals, with an extremely high melting point (2450°C).

• Erosion Resistance: Due to its high melting point, the spark plug is exceptionally resistant to spark erosion, ensuring a stable combustion process throughout its entire service life.

• Efficiency: The fine-wire center electrode requires less voltage to create a spark, allowing the engine to run more smoothly and ignite the fuel mixture more efficiently.

• Durability: By using iridium, the service life is significantly extended compared to standard plugs, meaning fewer replacements are required.

Technical Specifications:

• Model: CR9EHI-9 (Iridium)

• Vendor Part Number: 6419

• Thread Size: 10 mm

• Thread Reach: 19 mm (3/4")

• Hex Size: 16 mm (5/8")

• Spark Gap: 0.9 mm (0.035")

• Electrical Resistance: Resistor Type (5k Ohms)

• Heat Range: 9

This spark plug is designed for specific models requiring maximum reliability:

DAELIM

• Roadwin 125 R F.I. (Roadsport) (2007)

• Roadwin 250 R F.I. (Roadsport) (2012–2015)

HONDA

• CB 500: 1994–1995

• CB 600 F Hornet: 1998–2012 (All models, including Early/Late 2000)

• CBR 600 F: 1991–2000, 2011–2013

• CBR 900 RR Fireblade: 1992–1999

• CBR 1100 XX Blackbird: 1997–2000

• VFR 750 F / R: 1988–1997

• VFR 800 / Interceptor: 1998–2001

• RVF 750 R: 1994–1997

• NX 250: 1988–1991

• XR 250 R: 1996–1997

Who is this for?

• Quality-Oriented Riders: Those looking to ensure maximum engine efficiency and reliable starting in all conditions.

• Long-Distance Travelers: Due to the doubled service life, these plugs reduce the risk of ignition-related issues during long trips.

• Modern Engine Owners: When the manufacturer specifies resistor-type iridium plugs to protect sensitive onboard electronic systems.