When doing replacement or upgrading on 1991 – 2018 Ford Explorer Sport Trac without Adrenalin package (Adrenalin with halogen capsule headlamps HID, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight 2002 – 2005 9006
High Beam Headlight 2002 – 2005, 2016 – 2018 9005
High Beam and Low Beam Headlight 1991 – 1994 9004
1995 – 2001 9007
2006 – 2010 9008
Front Fog Light 1995 – 1998 899
2002 – 2010, 2016 9145
1999 – 2001 H1
1993 – 1994 H2
Back Up Light 1991 – 2005 3156
2016 – 2018 7440
2006 – 2010 921
Brake 1991 – 2005 3157
2006 – 2010 4057
Dome Light 2002 – 2010 578
1995 – 1996, 1998 – 2001 912
Front Side Marker 1991 – 1994, 2006 – 2010 194
1995 – 2001 916NA
Front Turn Signal 1991 – 1994 3157
1995 – 2005 3157NA
2006 – 2010 3457
2016 – 2018 3757NA
License Plate 1998 – 2010, 2016 – 2018 168
1991 – 1997 194
Parking Light 1991 – 2000, 2002 – 2005 3157
2001 3157NA
2006 – 2010 3357NA
2016 – 2018 3757NA
Rear Side Marker 2006 – 2010 194
1995 – 1996 3157
Rear Turn Signal 1995 – 2000 3156
1991 – 1994, 2001 – 2005 3157
2006 – 2010 4057
2016 – 2018 7440NA
Tail Light 1991 – 2005 3157
Luggage Compartment 1991 – 2001 211-2
2002 – 2010 578
Center High Mount Stop Light 2002 – 2010 194
1991 – 2000 912
2001 921
Courtesy 1991 – 1994, 2001, 2004 – 2005 168
1995 – 1997, 1999 – 2000 912
Door Mirror Illumination Light 2001 912
Engine Compartment Light 1991 – 2001 906
Glove Box 1991 – 2001, 2016 – 2018 194
Interior Door 1995 – 2000, 2002 – 2003, 2006 – 2010 194
Lower Tail Light 2006 – 2010 4057
Map Light 1991 – 2001 168
2016 – 2018 194
2002 – 2010 578
Upper Tail Light 2006 – 2010 194
High Beam and Low Beam Headlight 2011 – 2015 9005
Front Fog Light 2011 – 2015 H8/H11/H16
Back Up Light 2013 – 2015 7440
2011 – 2012 PS19W
Dome Light 2011 – 2012 194
Front Side Marker 2011 – 2015 194
Front Turn Signal 2011 – 2015 3457
License Plate 2011 – 2015 168
Parking Light 2011 – 2015 3457
Rear Turn Signal 2013 – 2015 7440NA
2011 – 2012 PSY19NA
Courtesy 2013 – 2015 168
Map Light 2011 – 2015 194
High Beam and Low Beam Headlight 2011 – 2015 D3S
Front Fog Light 2011 – 2015 H8/H11/H16
Back Up Light 2013 – 2015 7440
2011 – 2012 PS19W
Dome Light 2011 – 2012 194
Front Side Marker 2011 – 2015 194
Front Turn Signal 2011 – 2015 3457
License Plate 2011 – 2015 168
Parking Light 2011 – 2015 3457
Rear Turn Signal 2013 – 2015 7440NA
2011 – 2012 PSY19NA
Courtesy 2013 – 2015 168
Map Light 2011 – 2015 194
High Beam and Low Beam Headlight 2001 – 2003 9007
Front Fog Light 2001 – 2003 9145
Back Up Light 2001 – 2003 3156
Brake 2001 – 2003 3157
Dome Light 2001 – 2003 912
Front Side Marker 2001 – 2003 3157
Front Turn Signal 2001 – 2003 3157NA
License Plate 2001 – 2003 194
Parking Light 2001 – 2003 3157NA
Rear Turn Signal 2001 – 2003 3157
Tail Light 2001 – 2003 3157
Luggage Compartment 2001 – 2003 912
Center High Mount Stop Light 2001 – 2003 921
Courtesy 2001 168
Glove Box 2001 – 2003 194
Interior Door 2002 – 2003 194
Map Light 2001 – 2003 168
High Beam and Low Beam Headlight 2001 – 2005 9007
2007 9008
Front Fog Light 2001 – 2005, 2007 9145
Back Up Light 2001 – 2005, 2007 3156
Brake 2001 – 2005 3157
2007 4057
Dome Light 2007 578
2001 – 2005 912
Front Side Marker 2007 194
2001 – 2005 3157
Front Turn Signal 2001 – 2005 3157NA
2007 3457NA
License Plate 2001 – 2005, 2007 194
Parking Light 2001 – 2005 3157NA
2007 3357NA
Rear Side Marker 2007 194
Rear Turn Signal 2001 – 2005 3157
2007 4157
Tail Light 2001 – 2005 3157
2007 4057
Luggage Compartment 2007 578
2001 – 2005 912
Center High Mount Stop Light 2001 – 2005, 2007 921
Courtesy 2001 – 2005 168
Glove Box 2001 – 2005 194
Interior Door 2007 194
Map Light 2001 – 2005 168
2007 578
High Beam and Low Beam Headlight 2008 – 2010 9008
Front Fog Light 2008 – 2010 9145
Back Up Light 2008 – 2010 3156
Brake 2008 – 2010 4057
Dome Light 2008 – 2010 578
Front Side Marker 2008 – 2010 194
Front Turn Signal 2008 – 2010 3457NA
License Plate 2008 – 2010 194
Parking Light 2008 – 2010 3357NA
Rear Side Marker 2008 – 2010 194
Rear Turn Signal 2008 – 2010 4157
Tail Light 2008 – 2010 4057
Luggage Compartment 2008 – 2010 578
Center High Mount Stop Light 2008 – 2010 921
Interior Door 2008 – 2010 194
Map Light 2008 – 2010 578
High Beam and Low Beam Headlight 2008 – 2010 9008
Front Fog Light 2008 – 2010 PS24WFF
Back Up Light 2008 – 2010 3156
Brake 2008 – 2010 4057
Dome Light 2008 – 2010 578
Front Side Marker 2008 – 2010 194
Front Turn Signal 2008 – 2010 3457NA
License Plate 2008 – 2010 194
Parking Light 2008 – 2010 3357NA
Rear Side Marker 2008 – 2010 194
Rear Turn Signal 2008 – 2010 4157
Tail Light 2008 – 2010 4057
Luggage Compartment 2008 – 2010 578
Center High Mount Stop Light 2008 – 2010 921
Interior Door 2008 – 2010 194
Map Light 2008 – 2010 578