The U-Groove Spark Plug with its patented U-groove ground electrode design is engineered to deliver superior ignitability, allowing for leaner fuel mixtures and enhanced engine efficiency. Built to last twice as long as most conventional plugs, this spark plug features a durable nickel center electrode for reliable, long-lasting performance. Its precision machine-rolled threads minimize the risk of seizing or cross-threading, making it ideal for use in delicate aluminum heads. Designed with a flat seat type, it offers compatibility with a wide range of vehicles, including classic and collector cars, ensuring versatility for thousands of applications. Pre-fired for dependable operation, this spark plug is a perfect choice for those seeking OE performance and durability, with a lifespan exceeding 30,000 miles.

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
• Durable Nickel Center Electrode: The center electrode tip is made of durable nickel, ensuring long-lasting performance and reliability.