Genuine OEM Ford Motorcraft Updated Spark Plug Set F150 5.4L 3 Valve* V8 SP-546 Genuine OEM Ford Motorcraft Updated Spark Plug Set F150 5.4L 3 Valve* V8 SP-546 Oem Genuine Motorcraft Spark Plug SetSP-546X / SP546 (8)(FORMERLY SP-515)*PLEASE NOTE: IN OR ABOUT 2008 FORD CHANGED... MSRP: Was: Now: $124.98 Out of stock. Please Call For Availability