PART NUMBER: 8243. Inside the MSD red housing, engineers spec'd better material to assemble the primary and secondary windings. There is also patented dual magnet technology to step up the output. Coil; Ford 4.6/5.4L 3-Valve 04-08 Single.
MSD Performance 8243 Coil-On-Plug Ignition Coil
MSD Performance 8243 Coil-On-Plug Ignition Coil Ford 4.6/5.4 L 04-08
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