When doing replacement or upgrading on 2012 – 2017 Buick Verano, the bulb size guide is necessary for you to take the reference.
Jump to corresponding car model with the catalog bellow.

Low Beam Headlight2012 – 2017 H11
High Beam Headlight2012 – 2017 H9
Front Fog Light2012 – 2017 H8/H11/H16
Back Up Light2012 – 2017 921
Brake2012 – 2017 7443
Dome Light2012 – 2017 194
Front Side Marker2012 – 2017 7444NA
Front Turn Signal2012 – 2017 7443NA
License Plate2012 – 2017 12961
Parking Light2012 – 2017 7444NA
Rear Side Marker2012 – 2017 7443
Rear Turn Signal2012 – 2017 H21W
Courtesy2012 – 2017 12961
Inner Tail Light2012 – 2017 194
Map Light2012 – 2017 12961
Outer Tail Light2012 – 2017 7443