Seller notes

Compatible with 2004-Early 2008 Ford® 3-Valve 4.6L,5.4L & 6.8L Modular Engines - One Piece Design - 8 Pack of PN 346. This product is not created or sold by Ford®.; ACCEL 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...

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