This is a New OEM Stock 4.0L SET OF 2 Cylinder Head Assemblies Fits Both Driver and or Passenger side ***JJ Original Equipment 90-day (Unlimited Miles) New Cylinder Head Warranty*** JJ Original Equipment offers buyers a 90-days (Unlimited Miles) **for New Cylinder Heads beginning on the ship date. Products for **consideration must be returned to JJ Original Equipment at the buyer’s expense (unless otherwise agreed) for **inspection. Bishop Engine will honor this **after determining the defect. This **covers replacement parts only.