Spec Plug for all Vortex ROK Classes.

B9EG

B10EG

Sold Each.

About this item

• Fine-wire center and ground electrodes provide better sparking and enhanced ignitability
• Made to withstand the severe conditions that occur in racing engines
• Zinc dipped shell prevents corrosion while the triple gasket seal eliminates combustion gas leakage
• Special configurations are used for the insulator noses to improve throttle response and prevent fouling with corrugated ribs on insulator to prevent flashover
• Solid copper core for greater spark