Ideal for replacing a worn or inoperative spark plug!
Specially designed and developed at NGK for your 50cc 4-stroke engine scooters (VESPA PRIMAVERA, COLLEGE ...)!
Here is the NGK ER9EH-N spark plug of very good quality.
Solid and efficient, it will allow a better performance of your engine as at the origin. Supplied without olive, this spark plug is equipped with a 5 kOhm resistance so be careful to use a resistive 5 kOhm anti-parasite for the accompany. It has very specific features to be installed on VESPA scooters (thread diameter, electrode spacing, etc.).
What does NGK ER9EH-6N mean:
-E: Ø8mm base (to be tightened with 13mm key) -R: With 5kOhm resistor -9: Average index (between cold and hot) -EH: 19.0mm, semi-thread, 19mm base with Ø12.7mm thread
DENSO U31 ETR competition spark plug specific with 2 electrodes, replacement for prepared or original engines on large displacement 4 stroke motorcycles and many other applications.
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