The U-Groove Spark Plug with its patented U-groove ground electrode design ensures superior ignitability, allowing your engine to fire leaner mixtures for enhanced efficiency and performance. Crafted with precision machine-rolled threads, it minimizes the risk of seizing or cross-threading in delicate aluminum heads, making installation smooth and secure. Built for durability, this spark plug lasts twice as long as conventional options, offering a lifespan of over 30,000 miles. Its nickel center electrode tip and flat seat type ensure reliable performance across a wide range of applications, including classic and collector cars. Pre-fired for dependable operation, it not only boosts fuel efficiency but also enhances emission gas purification, making it an eco-friendly choice. Whether you're maintaining a daily driver or restoring a vintage vehicle, this spark plug delivers OE performance and long-lasting value.

Product Features:

• Patented U-groove ground electrode design fires leaner mixtures than conventional plugs
• Precision machine-rolled threads reduce seizing and cross-threading in delicate aluminum heads
• Wide range of part numbers for thousands of applications, including classic and collector cars
• Lasts twice as long as most conventional plugs
• 100 percent pre-fired to assure reliable operation
• U-Groove Conventional
• Long-Lasting Durability: Lasts twice as long as most conventional plugs, with a lifespan of over 30,000 miles.
• Enhanced Emission and Fuel Efficiency: 100 percent pre-fired to assure reliable operation, enhancing both emission gas purification and fuel consumption efficiency.