When doing replacement or upgrading on 2006 – 2019 Honda Ridgeline capsule halogen headlamps 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 Headlight 2006 – 2014 9003
Front Fog Light 2006 – 2014 H8/H11/H16
Back Up Light 2006 – 2014 921
Brake 2006 – 2014 7443
Daytime Running Light 2009 – 2014 9005
Front Side Marker 2006 – 2014 3457
Front Turn Signal 2006 – 2014 3457NA
License Plate 2006 – 2014 168
Parking Light 2006 – 2014 3357NA
Rear Side Marker 2006 – 2014 7443
Rear Turn Signal 2006 – 2014 7440
Tail Light 2006 – 2014 7443
Luggage Compartment 2006 – 2014 168
Center High Mount Stop Light 2006 – 2014 194
Glove Box 2007, 2013 12818
2006, 2008 – 2012, 2014 DE3175
Interior Door 2006 – 2014 194
Map Light 2006 – 2014 DE3175
Low Beam Headlight 2017 – 2019 H11
High Beam Headlight 2017 – 2019 9005
Front Fog Light 2017 – 2019 H8
Back Up Light 2017 – 2019 7440
Daytime Running Light 2017 – 2019 9005
Front Turn Signal 2017 – 2019 7443NA
License Plate 2017 – 2019 168
Parking Light 2017 – 2019 7443NA
Rear Turn Signal 2017 – 2019 7440
Luggage Compartment 2017 – 2019 194
Floor Console Compartment 2017 – 2019 74
Glove Box 2017 – 2019 74
Interior Door 2017 – 2019 194
Map Light 2017 – 2019 12961