• Designed for use on Ford 1993-2012 4.2L,4.6L 2-valve, 4.6L 4-valve,
  5.4L V8 and 6.8L V10 engines when installing timing chains.
• These engines are not free-wheeling, and if an engine has " jumped time "
  it is possible the cylinder heads have to be removed because of damage
  to the valves or pistons.
 

• Designed for use on Ford 1993-2012 4.2L,4.6L 2-valve, 4.6L 4-valve,
  5.4L V8 and 6.8L V10 engines when installing timing chains.
• These engines are not free-wheeling, and if an engine has " jumped time "
  it is possible the cylinder heads have to be removed because of damage
  to the valves or pistons.