The manifold absolute pressure sensor reads the amount of pressure or vacuum (also called "engine load") in the intake manifold, where outside air is divvied up in proper amounts and distributed to each cylinder. This pressure reading is shared with the engine control module to determine how much fuel needs to be fed to each cylinder, as well as to determine ignition timing.

Application
2007-2011 For Ford Crown Victoria
2005-2008 For Ford E-150
2007-2008 For Ford E-250
2005-2008 For Ford E-350 Super Duty
2005-2008 For Ford Escape
2004-2010 For Ford Explorer
2004 2005 2007-2010 For Ford Explorer Sport Trac
2004-2005 For Ford Focus
2005-2008 For Ford For F-150
2004 For Ford For F-150 Heritage
2005-2010 For Ford For F-250 Super Duty
2005-2010 For Ford For F-350 Super Duty
2008 2010 For Ford For F-450 Super Duty
2004-2007 For Ford Freestar
2005-2010 For Ford Mustang
2005-2011 For Lincoln Town Car
2007-2011 For Mercury Grand Marquis
2005 For Mercury Mariner
2004-2007 For Mercury Monterey
2004-2010 For Mercury Mountaineer