ACCEL 578-6 Copper Spark Plug Stock Heat Range 6 Pack Copper Spark Plug

• Eliminates Dimpling Headers For Added Clearance
• Improves Spark Plug Access To Fit Socket Or Wrench
• Copper Core Center Electrode

ACCEL U-Groove performance spark plugs have a patented U-shaped ground electrode that produces a double wide, hotter spark to ignite standard or even the highest compression engines. The sintered alumina heavy-duty five rib insulator eliminates flashover and overheating that occurs with high performance and long range applications. ACCEL U-Groove spark plugs use the purest copper/nickel alloy electrode to produce a broad heat range that is highly foul resistant and dissipates heat better than any other material. Years of racing and street performance research has proven that ACCEL U-Groove spark plugs deliver the hottest spark and the highest performance of any spark plug available.