NGK plugs have a screw on top. If you are running a NCY Direct coil inside the coil there is a spring. The Spring pulls out or breaks no terminal nut is used. This nut we extend the life of the NCY direct Coil.
Accessories, Engine Performance, GY6 Motor
NGK Spark Plug Terminal Nut for NCY Direct Ignition Coils
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In stock
$0.65
In stock
NGK CR7HIX Iridium Spark Plug GY6 



