When doing replacement or upgrading on 1998 – 2018 Lincoln Navigator capsule halogen headlamps HID with, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

High Beam and Low Beam Headlight1998 – 2002 9007
2007 – 2018 D3S
Front Fog Light1998 – 2002 899
2007 – 2014 H8/H11/H16
Back Up Light1998 – 2002, 2007 – 2014 921
Brake1998 – 2002 3157
2007 – 2014 4057
Dome Light2015 – 2018 194
Front Side Marker1998 – 2002, 2007 – 2014 194NA
Front Turn Signal1998 – 2002 3157NA
License Plate1998 – 2002, 2015 – 2018 168
2007 – 2014 194
Parking Light1998 – 2002, 2007 – 2014 3157
Rear Turn Signal1998 – 2002 3157
2007 – 2014 4057
Tail Light1998 – 2002 3157
Front Inner Turn Signal2007 – 2014 3157NA
Luggage Compartment1998 – 2002, 2007 – 2018 578
Center High Mount Stop Light2015 – 2018 12961
2007 – 2014 168
1998 – 2002 912
Courtesy1998 – 2002 912
Engine Compartment Light1998 – 2002 912
Glove Box2015 – 2018 194
Lower Tail Light2007 – 2014 4057
Map Light2007 – 2018 12961
1998 – 2002 578
Upper Tail Light2007 – 2014 912
Low Beam Headlight2003 – 2006 9006
High Beam Headlight2003 – 2006 9005
Front Fog Light2003 – 2006 9145
Back Up Light2003 – 2006 3157
Brake2003 – 2004 3157
2005 – 2006 4057
Dome Light2003 – 2006 578
Front Side Marker2003 – 2006 194NA
Front Turn Signal2003 – 2006 3157NA
License Plate2003 – 2006 168
Parking Light2003 – 2006 3157
Rear Turn Signal2003 – 2004 3157
2005 – 2006 4157
Luggage Compartment2003 – 2006 578
Center High Mount Stop Light2003 – 2006 194
Courtesy2003 – 2006 211-2
Engine Compartment Light2003 – 2006 912
Lower Tail Light2003 – 2004 3157
2005 – 2006 4157
Map Light2003 – 2006 578
Upper Tail Light2003 – 2006 912
Low Beam Headlight2003 – 2006 D1R
High Beam Headlight2003 – 2006 9005
Front Fog Light2003 – 2006 9145
Back Up Light2003 – 2006 3157
Brake2003 – 2004 3157
2005 – 2006 4057
Dome Light2003 – 2006 578
Front Side Marker2003 – 2006 194NA
Front Turn Signal2003 – 2006 3157NA
License Plate2003 – 2006 168
Parking Light2003 – 2006 3157
Rear Turn Signal2003 – 2004 3157
2005 – 2006 4157
Luggage Compartment2003 – 2006 578
Center High Mount Stop Light2003 – 2006 194
Courtesy2003 – 2006 211-2
Engine Compartment Light2003 – 2006 912
Lower Tail Light2003 – 2004 3157
2005 – 2006 4157
Map Light2003 – 2006 578
Upper Tail Light2003 – 2006 912