When doing replacement or upgrading on 2007 – 2016 Volkswagen Eos with capsule halogen 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 2007 – 2016 H7
High Beam Headlight 2007 – 2016 H7
Front Fog Light 2007 – 2016 9006
Back Up Light 2007 – 2011 1156
2012 – 2016 921
Daytime Running Light 2012 – 2016 7440
Dome Light 2007 – 2011 194
Front Side Marker 2012 – 2016 12256
2007 – 2011 12961
Front Turn Signal 2007 – 2011 3457
2012 – 2016 7440NA
License Plate 2007 – 2011 12844
2012 – 2016 12961
Parking Light 2012 – 2016 12961
2007 – 2011 3457
Front Outer Turn Signal 2007 – 2011 12396NA
Door Mirror Illumination Light 2007 – 2011 194
Glove Box 2012 – 2016 12961
2007 – 2011 194
Map Light 2007 – 2016 12961
Stepwell 2007 – 2016 12961
Trunk 2007 – 2011 194
2012 – 2016 578
High Beam and Low Beam Headlight 2007 – 2011 D1S
2012 – 2016 D3S
Front Fog Light 2007 – 2016 9006
Back Up Light 2007 – 2011 1156
2012 – 2016 921
Dome Light 2007 – 2011 194
Front Side Marker 2012 – 2016 12256
2007 – 2011 12961
Front Turn Signal 2012 – 2016 PSY24WSV
2007 – 2011 PY21W
License Plate 2007 – 2011 12844
Parking Light 2007 – 2011 194
Front Outer Turn Signal 2007 – 2011 12396NA
Door Mirror Illumination Light 2007 – 2011 194
Glove Box 2007 – 2011 12961
2012 – 2016 194
Map Light 2007 – 2016 12961
Stepwell 2007 – 2016 12961
Trunk 2007 – 2011 194
2014 578
2012 – 2013, 2015 – 2016 6411