Knowing the right bulb sizes for your 2015 Honda Civic saves time and frustration when it's time to replace a blown light or upgrade to LED. Honda used a range of bulb types across the Civic sedan and coupe trims this year, so checking an accurate chart before buying or pulling parts is a smart move.
This guide covers every exterior and interior bulb size for the 2015 Civic, including high and low beams, turn signals, brake lights, and more. You'll also find specific tips for swapping bulbs, common upgrade options, and answers to practical questions drivers actually ask.
2015 Honda Civic Bulb Sizes Chart
The following chart lays out the original equipment (OE) bulb sizes for the 2015 Honda Civic. These sizes fit both the sedan and coupe, unless noted. Always check your owner’s manual or look at the bulb itself if you’re unsure, as Canadian models and some trims (like Si or EX-L) may differ slightly.
- Headlights (Low Beam): H11
- Headlights (High Beam): 9005
- Front Turn Signal: 7443
- Parking Light (Front): 168
- Daytime Running Light: 9005 (shared with high beam)
- Fog Light: H11 (if equipped)
- Rear Turn Signal: 7440
- Brake/Tail Light: 7443
- Reverse Light: 921
- License Plate Light: 168
- Trunk/Cargo Light: 168
- Map/Dome Light: 168
- Vanity Mirror Light: vanity bulbs are sometimes labeled 6614F or similar (check your trim)
These are the standard halogen or incandescent sizes. If you plan to swap to LED or HID bulbs, use these numbers to match the correct fitment.
Headlight Bulbs: High and Low Beam Details
The 2015 Honda Civic uses two separate bulbs for its headlights. The low beam bulb is an H11, mounted toward the fender side of the headlamp housing. The high beam uses a 9005 bulb and is positioned closer to the grill. Most Civics use halogen bulbs, but the Si trim may offer HID low beams in some countries. If your Civic has projector-style headlights, double check the bulb size by removing the dust cap and reading the marking on the back of the bulb.
Replacing these bulbs is straightforward. Open the hood, locate the appropriate dust cover, twist and pull out the old bulb, and disconnect the harness. Avoid touching the glass of new halogen bulbs with your fingers, as oil from your skin can shorten the bulb's life. For LED upgrades, look for H11 and 9005 LED kits labeled as CANbus compatible to avoid warning lights or flickering issues.
Front Turn Signal and Parking Light Sizes
The front turn signal on all 2015 Civic models is a 7443 bulb, which also serves as the parking light. This dual-filament bulb means it can run at a low brightness for parking light mode and switch to full brightness when signaling a turn. If you want to upgrade to LED, make sure you get a dual-filament LED 7443 bulb, or you may lose one of the two functions.
Accessing these bulbs is easiest by turning the steering wheel away from the side you’re working on, unclipping the inner wheel liner, and reaching up behind the headlight. The 168 parking light bulbs (if equipped separately) are small wedge-type bulbs found within the same housing or in a dedicated slot, depending on trim.
Rear Lighting: Brake, Turn, and Reverse Bulbs
For the rear lights, the 2015 Civic uses a 7443 bulb for the brake and tail light and a 7440 bulb for the rear turn signal. The reverse light takes a 921 bulb. These are accessed from inside the trunk; remove the trunk liner clips or the access cover behind the tail light assembly. The key detail here is that the 7443 is a dual-function bulb, lighting up at half brightness for tail lights and full brightness for the brakes. The 7440 is single-function, only powering the turn signal.
If you switch to LED for brake or turn lights, you may need to add a load resistor to avoid hyperflashing or bulb-out warnings, since LEDs draw less current than incandescent bulbs. The 921 bulb for the reverse lights is a compact wedge style, and a direct swap to LED is an easy upgrade for better backup visibility.
Fog Lights and Daytime Running Lights
Fog lights were optional or included on higher trims of the 2015 Civic. If present, they use the same H11 bulb as the low beam headlights, making replacements straightforward. These bulbs are accessed by removing the plastic splash shield underneath the bumper or reaching behind the fog lamp housing. Use care not to break the retaining clips if removing the shield.
Daytime running lights (DRL) on the 2015 Civic are part of the high beam circuit, also using a 9005 bulb. The DRL operates at reduced voltage during the day to act as a safety light. If both your high beam and DRL stop working, start by checking the 9005 bulb. LED upgrades for either function should be high-quality and designed for dual-mode operation to avoid flickering or DRL errors.
License Plate, Interior, and Trunk Bulbs
For the license plate, trunk, map, and dome lights, the Civic uses small wedge-style 168 bulbs. These are commonly replaced with LED for longer life and a whiter appearance. Replacing the license plate light requires removing the clear cover from the trunk lid. For the trunk light, pry out the plastic lens from the lining to access the bulb.
Interior dome and map lights are also 168 bulbs and can be accessed by prying down the plastic lens with a trim tool or flat screwdriver. If your Civic has vanity mirror lights, they may use a specialty bulb such as 6614F; check the old bulb for markings. When switching to LED inside, make sure the bulbs are labeled as ‘non-polarity’ or ‘canbus error-free’ for best results. A poor fit can leave you with flickering or non-working lights.
Tips for Upgrading to LED or HID Bulbs
Many Civic owners choose to upgrade their halogen bulbs to LED for brighter light and longer life. For exterior bulbs like headlights, turn signals, or brake lights, always match the OE size (H11, 9005, 7443, etc) when shopping for LEDs. Double check the bulb orientation, as some LEDs only work one way or may not fit tightly in the socket.
If you install LED turn signals or brake lights, be prepared to add resistors to prevent hyperflashing. For headlights, look for LED or HID kits with built-in cooling fans and CANbus support. Some cheap kits can cause dashboard warning lights or even radio interference. In some states, swapping headlight bulbs to certain colors or intensities may be illegal, so check your local laws before making big changes. Stick with reputable brands, and always test new bulbs before reassembling trim or covers to save yourself work if something doesn’t function correctly.
How to Safely Replace Bulbs on Your 2015 Civic
Replacing bulbs on a 2015 Civic is generally a DIY-friendly job, but take a few precautions. Always turn off the ignition and lights before starting to avoid electrical shorts. Wear gloves or use a clean cloth to handle halogen bulbs, as skin oils can cause premature failure. For headlight or fog light bulbs, be careful not to lose the retaining clips or rubber gaskets, as these keep moisture out of the housing.
Before finishing, test each new bulb to make sure it works and that all light functions (low/high beam, parking, signal, etc) operate correctly. Keep burnt-out bulbs as spares for emergencies. If you have trouble reaching a bulb, refer to the owner’s manual for the proper panel or liner removal steps, or check online forums for trim-specific tips and photos. Some bulbs are much easier to access with the wheels turned or the battery temporarily removed.
Frequently asked questions
Can I use LED bulbs for all positions on my 2015 Civic?
You can use LED bulbs for most positions, including headlights, brake lights, interior, and license plate lights. For turn signals, add resistors to avoid hyperflash. Always check bulb fitment and legality in your area.
How do I know if I need a single or dual filament bulb?
Bulbs like 7443 are dual-filament, handling both brake/tail or turn/parking functions. The 7440 is single-filament and only controls one function, like the rear turn signal.
Are the bulb sizes the same for sedan and coupe models?
Yes, most bulb sizes are the same for both sedan and coupe models of the 2015 Honda Civic. However, trims with projector headlights or other unique features may have differences. Check your manual if unsure.
Why do my new LED turn signals flash rapidly?
This is called hyperflashing, caused by LEDs drawing less power than incandescent bulbs. Solve this by installing load resistors matched to the bulb position.