ABOUT THIS PRODUCT

U-Groove Spark Plug (SF51) delivers OE performance with a specialized ground electrode configuration designed for optimal ignition efficiency. Crafted with precision machine-rolled threads, it minimizes the risk of seizing or cross-threading in delicate aluminum heads, ensuring hassle-free installation. Built to last twice as long as conventional plugs, this spark plug is 100 percent pre-fired for reliable operation right out of the box. Featuring a flat seat type and a nickel center electrode tip, it offers durability and consistent performance across a wide range of applications, including classic and collector cars. With its U-Groove design, this spark plug provides enhanced combustion and dependable functionality, making it a valuable upgrade for maintaining engine efficiency and longevity.

Product Features:

• OEM specified special ground electrode configuration
• 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