The ubiquitous NGK CR8E spark plug provides the ignition for millions of scooters and motorcycles all over the world Being a resistor type plug, the NGK CR8E will negate any unwanted Radio Frequency Interference (RFI) that may otherwise effect the computer controlled ignition or fuel injection systems on your scooter 30 Day Warranty Description The ubiquitous NGK CR8E spark plug provides the ignition for millions of scooters and motorcycles all over the world. Being a resistor type plug, the NGK CR8E will negate any unwanted Radio Frequency Interference (RFI) that may otherwise effect the computer controlled ignition or fuel injection systems on your scooter. The NGK CR8E may just be the perfect spark plug. Sold without terminal nut. Specifications Name: NGK CR8E Thread: 10 mm Reach: 3/4″ (19 mm) Heat: 8 (cool)