Description

Ford 2004-Early 2008 Ford 3-Valve 4.6L,5.4L 6.8L Modular Engines – One Step Colder than Stock – One Piece Design – 8 Pack of PN 346C1One Piece Design – Won’t break off in head during removal like two piece designsThe Copper core is a better conductor than Iridium or Platinum plugsCopper dissipates heat much better than other materials”C” – Cut Design un-shrouds the spark kernel for a better burnUnlike Iridium or Platinum plugs, the ACCEL HP plugs are gapableMachine rolled threads for precise thread engagementOne Step Colder than StockACCEL HP Spark Plugs are made with a Copper core which is a better conductor than Platinum and Iridium. They deliver a stronger spark especially in high performance applications where high combustion pressures are present. Copper is much better at dissipating heat than other materials which lessens the chance of a misfire. ACCEL HP Spark Plugs are gapable allowing you to open the gap exposing a larger flame kernel or close it if needed for high boost applications. All ACCEL HP Spark Plugs have machine rolled threads allowing for a more precise thread engagement and torque retention.