The U-Groove Spark Plug features an OEM-specified special ground electrode configuration designed to enhance ignitability, improving fuel efficiency and emission gas purification. Its durable nickel center electrode tip ensures reliable performance and longevity, withstanding high temperatures and wear. Precision machine-rolled threads reduce the risk of seizing and cross-threading in delicate aluminum heads, making installation smooth and secure. With a flat seat type and compatibility across thousands of applications, including classic and collector cars, this spark plug is a versatile choice for various vehicles. Pre-fired for dependable operation, it lasts twice as long as most conventional plugs, delivering over 30,000 miles of consistent performance. Whether you're maintaining a daily driver or restoring a vintage car, this U-Groove spark plug offers exceptional value and reliability.

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
• Unique U-Groove Ground Electrode: Developed to enhance ignitability, improving efficiency in emission gas purification and fuel consumption.
• Durable Nickel Center Electrode Tip: Ensures long-lasting performance and reliability, withstanding high temperatures and wear.