2017 Honda Civic Bulb Sizes: An ASE Master Technician's Guide

Quick Reference

Decoding the various bulb sizes and types for your 2017 Honda Civic can be a bit of a maze, especially with the mix of halogen and LED options Honda offered. As an ASE-certified master technician, I've put together this comprehensive guide to help you identify the correct bulbs for each lighting application on your Civic.

The 2017 Honda Civic, a popular and reliable compact car, came with several lighting configurations depending on the trim level. Lower trims typically featured conventional halogen bulbs for headlights and DRLs, while higher trims, such as the Touring and some EX-L models, boasted full LED headlights. This distinction is crucial when considering replacements or upgrades.

For low beam headlights, halogen-equipped Civics utilize an H11 bulb. If your Civic has the factory LED headlights, these are typically integrated LED units that are not designed for bulb replacement; instead, the entire headlight assembly would need to be replaced if the LEDs fail. The same applies to high beam headlights; halogen versions use a 9005 bulb, while LED-equipped Civics have integrated LED units.

Fog lights on the 2017 Civic commonly use an H8 or H11 bulb. It's always best to visually inspect your vehicle's existing fog light bulb or consult your owner's manual to confirm the correct size, as there can be slight variations, sometimes even with LED modules on higher trims.

Daytime Running Lights (DRL) often share the 9005 bulb with the high beams on halogen-equipped models. Again, factory LED DRLs will be integrated.

When it comes to turn signals, both the front and rear turn signals generally use a 7440A or 7443 incandescent bulb. The "A" in 7440A signifies amber, which is the required color for turn signals. The 7443 is a dual-filament bulb often used where a single bulb performs both turn signal and another function (like a parking light).

The brake lights primarily use a 7443 bulb, which is a dual-filament bulb allowing for both a dim tail light function and a brighter brake light function from a single bulb element. Tail lights on many 2017 Civics, especially higher trims, are often integrated LED units. For models with incandescent tail lights, the 7443 bulb serves this purpose as well.

For reverse lights, you'll typically find a 7440 incandescent bulb. The license plate lights commonly use 168 or 194 bulbs – these are small wedge-base bulbs that are easy to replace. Side marker lights also typically use a 194 bulb.

Moving inside the cabin, the dome light usually takes a DE3175 festoon-style bulb. The map lights commonly use 168 or 194 bulbs, similar to the license plate lights. Always double-check these interior bulbs as they can sometimes vary based on trim and package.

LED vs Halogen Upgrade Considerations

Upgrading from halogen to LED bulbs can significantly enhance visibility and modernize the look of your 2017 Honda Civic, but it