The U-Groove Spark Plug (XU22EPR-U) is engineered for optimal performance and durability, making it a reliable choice for a wide range of vehicles, including classic and collector cars. Its patented U-groove ground electrode design enhances ignitability, allowing it to fire leaner fuel mixtures for improved engine efficiency. Crafted with a nickel center electrode tip and a flat seat type, this spark plug ensures precise performance and compatibility with delicate aluminum heads, thanks to its precision machine-rolled threads that minimize seizing and cross-threading. Built to last twice as long as most conventional plugs, it is 100% pre-fired to guarantee dependable operation right out of the box. With a broad selection of part numbers available, this spark plug delivers OE-level performance and longevity, making it a smart investment for maintaining your engine's peak performance.

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