ACCEL 579C1 HP Copper Spark Plug Fits 11-17 F-150 Mustang

Spark PlugHP Copper Spark PlugHP Copper Spark Plug; 1 Heat Range Colder Than PN[579]; 0.032 in. Gap; 5/8 in. Hex Size; 1 in. Reach; Resistor; Tapered Seat Type; 1.25mm Thread Pitch; 14mm Thread Size; Each;SPECIFICATIONS:WARNING CA Proposition 65: No FEATURES: Copper Core Is A Better Conductor Than Iridium Or Platinum Copper Dissipates Heat Much Better Than Other Materials C - Cut Design Un-shrouds The Spark Kernel For Better Burn Unlike Iridium Or Platinum Plugs - The HP Plugs Are Gapable Machined Rolled Threads For Precise Thread Engagement One Step Colder Than Stock Whether Using On Street/Strip The HP Copper Core Plugs Deliver! 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