The U-Groove Spark Plug is engineered to deliver OE performance and exceptional durability, making it a reliable choice for a wide range of applications, including classic and collector cars. Featuring an OEM-specified special ground electrode configuration, it ensures optimal ignition efficiency while its nickel center electrode tip material enhances longevity. Precision machine-rolled threads minimize the risk of seizing or cross-threading in delicate aluminum heads, ensuring hassle-free installation. With a flat seat type and 100 percent pre-fired design, this spark plug guarantees consistent and dependable operation. Built to last twice as long as conventional plugs, it offers outstanding value and reduced maintenance costs. Whether you're maintaining a collector car or upgrading your daily driver, this spark plug delivers the quality and performance you need.

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