NGK Spark Plug - CPR8EB-9 (6607) Key Features: Wide Heat Range: Copper wire core provides a broader heat range compared to conventional iron cores. Efficient Heat Dissipation: Copper rapidly cools the electrode and insulator tip, enhancing performance. High Pre-Ignition Rating: Designed with high-conduction copper and a long nose insulator for improved reliability. Durable Construction: Triple seals prevent leakage, and the alumina silicate ceramic insulator ensures better heat transfer and strength. Anti-Flashover Design: Corrugated ribs on the insulator prevent flashover. Optimized Longevity: Built for extended life and consistent high performance. Specifications: Thread Size: 10mm Reach: 19mm (3/4") Hex Size: 5/8" (16mm) Seat Type: Gasket Gap: 0.035" (0.9mm) Heat Range: 8 Terminal Type: Solid Terminal Nut Electrode Tip: Projected Center Electrode Type: Resistor Weight: 0.12 lbs Units Sold: Single Alternate/OEM Part Numbers: 21030039, 6607 Part No.: 37-CPR8EB-9 Applications by Manufacturer and Model: Kawasaki: KLX450R (2008–2009), KSF450B KFX450R (2008–2014), KX250F (2006–2018), KX450F (2006–2018), Monster Energy Editions: 2009 KSF450B-B KFX450R, 2009 KX450F Monster Energy Moto Guzzi: V7 Series: Cafe Racer (2010–2015), Special (2013–2015), Stone (2013–2015), V7 II Series: Racer, Scrambler, Special, Stone, Stornello (2016), V7 III Series: Anniversario, Racer, Special, Stone (2017), V9 Series: Bobber, Roamer (2016–2017) Yamaha: XTZ1200 Super Tenere (2012–2018), XTZ1200E Super Tenere ES (2014–2018) Benefits: Optimized Performance: Copper core ensures efficient heat removal and reliable ignition. Longer Life: Durable materials and triple sealing prevent leakage and maintain consistent operation. Wide Compatibility: Suitable for a broad range of high-performance motorcycles and ATVs. The NGK CPR8EB-9 Spark Plug is a dependable replacement designed for high-performance vehicles, ensuring optimal ignition, heat management, and durability across various models.