When doing replacement or upgrading on 2003 – 2009 Dodge Sprinter 2500 3500 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.

Low Beam Headlight 2003 – 2006 H7
High Beam Headlight 2003 – 2006 H1
Front Fog Light 2005 – 2006 H1
2003 – 2004 H3-55W
Back Up Light 2003 – 2006 1156
Brake 2003 – 2006 1157
Front Side Marker 2003 – 2006 3457
Front Turn Signal 2003 – 2006 3457NA
License Plate 2003 – 2006 6418
Parking Light 2003 – 2006 12961
Rear Side Marker 2003 – 2004 12821
Rear Turn Signal 2003 – 2005 1156
2006 P21W
Tail Light 2003 – 2006 1157
Center High Mount Stop Light 2003 – 2006 1156
Courtesy 2005 – 2006 12961
Low Beam Headlight 2007 – 2009 H7
High Beam Headlight 2007 – 2009 H7
Front Fog Light 2007 – 2009 H8/H11/H16
Back Up Light 2007 – 2009 1156
Front Side Marker 2007 – 2009 12396NA
Front Turn Signal 2007 – 2009 3457
License Plate 2007 – 2009 194
Parking Light 2007 – 2009 3457
Rear Side Marker 2007 – 2009 12821
Rear Turn Signal 2007 – 2009 PY21W
Tail Light 2007 – 2009 12821
Courtesy 2007 – 2009 12961
Low Beam Headlight 2007 – 2009 D1S
High Beam Headlight 2007 – 2009 H7
Front Fog Light 2007 – 2009 H8/H11/H16
Back Up Light 2007 – 2009 1156
Front Side Marker 2007 – 2009 12396NA
Front Turn Signal 2007 – 2009 3457
License Plate 2007 – 2009 194
Parking Light 2007 – 2009 3357NA
Rear Side Marker 2007 – 2009 12821
Rear Turn Signal 2007 – 2009 PY21W
Tail Light 2007 – 2009 12821
Courtesy 2007 – 2009 194
Low Beam Headlight 2003 – 2006 H7
High Beam Headlight 2003 – 2006 H1
Front Fog Light 2005 – 2006 H1
2003 – 2004 H3-55W
Back Up Light 2003 – 2006 1156
Brake 2003 – 2006 1157
Front Side Marker 2003 – 2006 3457
Front Turn Signal 2003 – 2006 3457NA
License Plate 2003 – 2006 6418
Parking Light 2003 – 2006 12961
Rear Side Marker 2003 – 2004 12821
Rear Turn Signal 2003 – 2005 1156
2006 P21W
Tail Light 2003 – 2006 1157
Center High Mount Stop Light 2003 – 2006 1156
Courtesy 2005 – 2006 12961
Low Beam Headlight 2007 – 2009 H7
High Beam Headlight 2007 – 2009 H7
Front Fog Light 2007 – 2009 H8/H11/H16
Back Up Light 2007 – 2009 1156
Front Side Marker 2007 – 2009 12396NA
Front Turn Signal 2007 – 2009 3457
License Plate 2007 – 2009 194
Parking Light 2007 – 2009 3457
Rear Side Marker 2007 – 2009 12821
Rear Turn Signal 2007 – 2009 PY21W
Tail Light 2007 – 2009 12821
Courtesy 2007 – 2009 12961
Low Beam Headlight 2007 – 2009 D1S
High Beam Headlight 2007 – 2009 H7
Front Fog Light 2007 – 2009 H8/H11/H16
Back Up Light 2007 – 2009 1156
Front Side Marker 2007 – 2009 12396NA
Front Turn Signal 2007 – 2009 3457
License Plate 2007 – 2009 194
Parking Light 2007 – 2009 3357NA
Rear Side Marker 2007 – 2009 12821
Rear Turn Signal 2007 – 2009 PY21W
Tail Light 2007 – 2009 12821
Courtesy 2007 – 2009 194