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.