ABOUT THIS PRODUCT

The U-Groove Spark Plug (U14FSR-UB) is engineered for optimal engine performance and durability. Featuring a patented U-groove ground electrode design, it delivers superior ignitability, allowing for leaner fuel mixtures and improved engine efficiency. Crafted with precision machine-rolled threads, it minimizes the risk of seizing or cross-threading in delicate aluminum heads, ensuring a secure and hassle-free installation. Built with a nickel center electrode tip and a flat seat type, this spark plug is designed to meet OE performance standards while lasting twice as long as most conventional plugs. Its wide compatibility range covers thousands of applications, including classic and collector cars, making it a versatile choice for various vehicles. Pre-fired to ensure reliable operation, this spark plug combines advanced engineering with long-lasting performance, offering exceptional value for your engine's needs.

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