Copper Plus spark plug RJ12C delivers reliable performance and durability, making it an ideal OE-type replacement for your vehicle. Featuring a copper core center electrode, it ensures precise heat control for extended lifespan and consistent wear. The nickel-tipped center and ground electrodes enhance conductivity while resisting fouling, ensuring smooth engine operation. Built to ISO and SAE Standards, this spark plug offers proven performance and superior corrosion resistance, making it a dependable choice for maintaining your vehicle's efficiency. With a flat seat type and integrated resistor, it is designed to meet the demands of modern engines while providing excellent value and long-lasting functionality.

Product Features:

• Resists fouling
• Superior corrosion resistance
• Dependable and proven performance
• Increased conductivity and heat control for good overall wear