Description:

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. Model # 578C2-4 Features: Eliminates Dimpling Headers For Added Clearance Improves Spark Plug Access To Fit Socket Or Wrench Copper Core Center Electrode.