Description ACCEL 578C2-4 – HP Copper Spark Plug ACCEL HP Copper Spark Plug HP Copper Spark Plug; 2 Heat Ranges Colder Than Stock; 0.026 in. Gap; 5/8 in. Hex Size; 1 in. Reach; Resistor; Tapered Seat Type; 1.25mm Thread Pitch; 14mm Thread Size; 4 Pack.

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.

Copper Core Is A Better Conductor Than Iridium Or Platinum Plugs 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 Two Steps Colder Than Stock Whether Using On Street/Strip The HP Copper Core Plugs Deliver!

Application: Ford EcoBoostBrand: ACCELCategory: Spark PlugsEmission Code: 2Gap: .030Heat Range: 2 Steps ColderHex Size: 5/8Length: StandardProduct Type: Spark PlugProjected Tip: YesQty: 4Reach: 1Resistor: YesSeat Type: TaperedStyle: Copper CoreSub Category: Secondary IgnitionThread Pitch: 1.25Thread Size: 14Torque Specification: 7.2-14.5 lb.ft.