Product Overview
Spark Plug 123

Keep your boat engine purring like a kitten with the Champion Spark Plug 123 (RN5C). This reliable and durable spark plug is engineered for superior performance, ensuring smooth starts, efficient fuel consumption, and maximum power output on the water. Built with robust nickel alloy construction, it's designed to withstand the harsh marine environment and deliver consistent ignition, so you can enjoy uninterrupted boating adventures.
Key Features
- **Reliable Performance:** The Copper Plus Small Engine Electrical classification ensures consistent ignition and optimal engine performance.
- **Durable Construction:** Built with a nickel center electrode and nickel-copper alloy ground electrode for long-lasting performance in harsh marine conditions.
- **Efficient Combustion:** Optimized 0.025" (0.64mm) pre-gap size promotes efficient fuel burn and reduces emissions.
- **Easy Installation:** Standard 0.813" (20.65mm) hex size and removable nut terminal for straightforward installation.
- **Resists Fouling:** Built-in resistor suppresses electromagnetic interference and helps prevent spark plug fouling.
- **Superior Heat Dissipation:** Manufacturer heat range of 5 ensures optimal heat dissipation to prevent overheating and premature wear.
- **Secure Seal:** Includes a crush washer for a tight, secure seal to prevent leaks and maintain compression.
Specifications
The Captain's Take
As a seasoned captain, I know the importance of reliable equipment. The Champion Spark Plug 123 is a staple in my toolkit. Its consistent performance and durability provide peace of mind, knowing my engine will start reliably every time, even after extended periods of inactivity. I highly recommend the Champion 123 to any boater who demands the best for their vessel.