Copper Plus Spark Plug (RN12MC4) delivers reliable performance and durability, making it an excellent choice for maintaining your vehicle's efficiency. Featuring a copper core center electrode, it ensures precise heat control and enhanced conductivity, contributing to extended wear and consistent operation. The nickel center electrode tip material adds to its robustness, while the flat seat type ensures a secure fit. Designed with superior corrosion resistance, this spark plug is built to withstand harsh conditions, ensuring long-lasting reliability. Meeting ISO and SAE Standards, it guarantees proven performance and compatibility with a wide range of vehicles. With a built-in resistor type, it helps optimize ignition system functionality, making it a dependable solution for your engine's needs.

Product Features:

• Copper Plus - Dependable Performance and Durability
• Copper core center electrode allows for accurate control of heat range for longer life
• Superior corrosion resistance
• Built to ISO and SAE standards for proven performance
• Built to ISO and SAE standards for proven performance