Resistor type spark plug QL78V is engineered to meet original equipment manufacturer specifications to best protect your engine and ensure optimum performance. The copper core electrode increases heat conductivity for an optimal operating range and superior wear characteristics. Resistor type plugs are essential for reducing radio frequency interference (RFI) to sensitive onboard electronics.
- Resistor type design reduces electrical noise and RFI interference
- Copper core electrode ensures stable temperatures and low wear
- Meets Mercury Marine original equipment manufacturer specifications
- Ensures optimum engine performance and starting reliability
- Always check the spark plug gap before installation
