The radiator cap holds the coolant inside the radiator, but it also works as a two-way valve that keeps the right pressure inside so the radiator does it work correctly.

This Allmotorparts Radiator Pressure Cap is a great replacement cap for your old Powerstroke truck radiator purge tank.

Compatible with Ford Vehicles:
1992-2011 Crown Victoria
2003-2014 E-150
2003-2005 E-150 Club Wagon
1995-2002 E-150 Econoline
1995-2002 E-150 Econoline Club Wagon
2003-2014 E-250
1995-2002 E-250 Econoline
2003-2005 E-350 Club Wagon
1995-1998 E-350 Econoline
1995-2002 E-350 Econoline Club Wagon
2004-2019 E-350 Super Duty
2007-2014 Edge
2000-2005 Excursion
1997-2013, 2015-2017 Expedition
2002-2005, 2011-2019 Explorer
2002 Explorer Sport Trac
1997-2017 F-150
2004 F-150 Heritage
1997-1999 F-250
1999-2016 F-250 Super Duty
1997 F-350
1999-2017 F-350 Super Duty
2005-2007 Five Hundred
2009-2019 Flex
2004-2007 Freestar
2005-2007 Freestyle
2006-2013 Fusion
2005-2006 Ford GT
1996-2014 Mustang
2013-2019 Police Interceptor Sedan
2013-2019 Police Interceptor Utility
2001-2011 Ranger
2014-2017 Special Service Police Sedan
1996-2019 Taurus
2008-2009 Taurus X
1994-1997, 2002-2005 Thunderbird
1999-2003 Windstar

Compatible with Lincoln Vehicles:
2003-2005 Aviator
2002 Blackwood
1995-2002 Continental
2000-2006 LS
2009-2016 MKS
2010-2019 MKT
2007-2017 MKX
2007-2012 MKZ
2006-2008 Mark LT
1993-1998 Mark VIII
1998-2017 Navigator
1992-2011 Town Car
2006 Zephyr

Compatible with Mercury Vehicles:
1994-1997 Cougar
1992-2011 Grand Marquis
2006-2011 Milan
2005-2007 Montego
2004-2007 Monterey
2002-2005 Mountaineer
1996-2005, 2008-2009 Sable

Radiator Pressure Cap For Ford 6.0 7.3 F150 F250 F350 Coolant Recovery Tank Cap Radiator Pressure Cap For Ford 6.0 7.3 F150 F250 F350 Coolant Recovery Tank Cap