Long base candle NGK R0373A9 (medium cold index)

One of the most racing spark plugs from NGK ! It is widely used on many competition engines because it corresponds to the expectations of an engine with high compression, it is really a model intended for competition.

It offers exceptional power and ignition. It clogs very little and rarely grills thanks to its materials, which explains its very high price. It will be able to accept the highest revs, however, remember to put it on only once correctly adjusted because if you put it on being too rich or poor in carburation, in a very short time it will be in poor condition and you will risk burning out. spark plug, tightening, piston drilling, etc.


- Index: 9 (medium cold)
- Reserved for the engine: very equipped
- Resistance: yes

- Base: short

-Diameter of the thread: Ø10mm (key to use Ø16mm)
- Thread length: 19mm

-Type: iridium

-Mass: platinum

-Threaded shaft