CH1035R - Remanufactured Cylinder Head Complete 1999-2000 Ford 4.2L 256 OHV Casting #XF2E. Has large water ports on intake side of head. Includes valves & springs.
CH1036R - Remanufactured Cylinder Head Complete 1999-2008 Ford 4.2L 256 OHV Vin 2 Casting #YF2E. Has small water ports on intake side of head. Includes valves & springs.