Ford Explorer Replacing Ignition Coil Pack This item is in the category eBay Motors\Parts & Accessories\Car & Truck Parts & Accessories\Ignition Systems & Components\Spark Plugs. With a dedicated 9/16spark plug socket. 8-pcs spark plugs withcoil for ford explorer mustang mercury mountaineer 4.6 v8 designed and produced under a strict ts16949 quality control process.