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 Headlight2006 – 2014 9003
Front Fog Light2006 – 2014 H8/H11/H16
Back Up Light2006 – 2014 921
Brake2006 – 2014 7443
Daytime Running Light2009 – 2014 9005
Front Side Marker2006 – 2014 3457
Front Turn Signal2006 – 2014 3457NA
License Plate2006 – 2014 168
Parking Light2006 – 2014 3357NA
Rear Side Marker2006 – 2014 7443
Rear Turn Signal2006 – 2014 7440
Tail Light2006 – 2014 7443
Luggage Compartment2006 – 2014 168
Center High Mount Stop Light2006 – 2014 194
Glove Box2007, 2013 12818
2006, 2008 – 2012, 2014 DE3175
Interior Door2006 – 2014 194
Map Light2006 – 2014 DE3175
Low Beam Headlight2017 – 2019 H11
High Beam Headlight2017 – 2019 9005
Front Fog Light2017 – 2019 H8
Back Up Light2017 – 2019 7440
Daytime Running Light2017 – 2019 9005
Front Turn Signal2017 – 2019 7443NA
License Plate2017 – 2019 168
Parking Light2017 – 2019 7443NA
Rear Turn Signal2017 – 2019 7440
Luggage Compartment2017 – 2019 194
Floor Console Compartment2017 – 2019 74
Glove Box2017 – 2019 74
Interior Door2017 – 2019 194
Map Light2017 – 2019 12961