Introducing the 8Pcs Iridium Spark Plug AGSF22WM, specially designed to compatible with E-150, E-250, with 5.4L and 6.8L engines. These premium spark plugs, model SP479, are crafted with iridium to ere optimal perforce and longevity compatible with your vehicle. Upgrade your engine's ignition system with these reliable spark plugs to experience improved fuel efficiency, er celeion, and overall enhanced engine perforce. Trust in the quality and of these spark plugs to keep your running ly mile after mile. iridium spark plugs compatible with reliable ignition perforce. Compatible with E-150, E-250, with 5.4L and 6.8L engines. Set of 8 spark plugs compatible with complete engine tune-up. AGSF22WM model designed compatible with durability and longevity. Reples SP479 compatible with improved engine efficiency.