Remachined cylinder head (left side or driver's side) 2011- 2019 3.5 l, 3.7 l, V6 Ford F-150. Had a bolt break in it , getting it machined took a while so ended up buying a new cylinder head in the meantime I needed my truck running now that its back from the shop their is nothing wrong with it comes with set of new six intake and six exhaust valves $300 or best offer