NGK CR8EK Dual-Electrode Spark Plug – 3478 The NGK CR8EK is a standard nickel-alloy spark plug with a dual-ground electrode design for extended life and consistent spark delivery. This configuration helps maintain spark performance even as one electrode begins to wear. It’s a solid choice for motorcycles that call for a dual-electrode design and is commonly used in multi-cylinder street and performance bikes. The CR8EK offers reliable ignition under varying load and temperature conditions, making it suitable for both daily riders and spirited use. Specs: Thread Size: 10mm Reach: 19mm (3/4") Hex Size: 5/8" (16mm) Heat Range: 8 (NGK scale) Electrode Material: Nickel alloy Ground Electrodes: 2 Resistor Plug: Yes NGK Part Number: 3478 Common Fitment: BMW F650GS (single-cylinder) KTM 990 Adventure / Super Duke Yamaha FZ6 / FZ6R Honda VFR800 (select years) Kawasaki Z750 / ZX-6R (varies by year) Always verify fitment with your motorcycle’s service manual before installation.
