This 2018 Honda Ridgeline bulb size guide is designed to help you verify the correct bulb by lighting position before you buy replacements. Because the Ridgeline can use different lighting setups depending on trim, package, and market, the same model year may have different bulb types for the headlights, taillights, interior lights, and exterior markers.
Use this page as a quick reference for the 2018 Honda Ridgeline so you can match the bulb to the exact location on the truck. Whether you are replacing a headlight, license plate light, map light, or cargo area light, checking the position first is the best way to avoid ordering the wrong part.
Fitment can vary on the 2018 Ridgeline, especially between halogen and LED headlight setups and between different trim or lighting packages. Some positions are listed as LED assemblies, while others use replaceable bulbs such as H11, 9005, 7440, 7444NA, 168, 194, 2721, 74, 6615F, or H8 LED depending on the application. If you are converting from halogen to aftermarket LED bulbs, make sure the replacement is compatible with the socket, beam pattern, and vehicle electronics. Before placing an order, it is always smart to check the bulb already installed in your truck, since previous repairs, regional differences, or factory options can affect the exact fitment.
