2014 Ford Focus Light Bulb Replacement Sizes

Replacing a bulb on your 2014 Ford Focus is simple if you know the correct size. Whether you’re dealing with a burnt-out headlight or planning an LED upgrade, matching the right bulb to each location is crucial. Fumbling with the wrong size or socket wastes time and money.

This guide breaks down every major exterior and interior bulb size for the 2014 Focus, including headlights, brake lights, turn signals, and more. You’ll also find part numbers, compatible bulb types, and some practical advice for safe replacement.

Headlight Bulb Sizes and Types

The 2014 Ford Focus uses different bulb types for low beam and high beam headlights. For models with standard halogen headlights, the low beam bulb is an H11, while the high beam bulb is a 9005. If your Focus has factory-installed HID (xenon) headlights, the bulbs are D3S for both low and high beam. Always check your car’s headlight housing or owner’s manual to confirm which system you have-the wrong bulb type simply won’t fit or function.

Most Focus trims in the US market were sold with halogen bulbs. The H11 and 9005 are widely available as halogen, LED, or HID aftermarket upgrades. If you’re switching to LED, be aware that the bulb’s heat sink or fan must fit inside the headlight housing. For best results, stick with trusted brands like Philips, Sylvania, or Osram, and always aim the headlights properly after replacement to avoid blinding other drivers.

Fog Light and Daytime Running Light Bulbs

Fog lights for the 2014 Ford Focus use H11 bulbs, the same size as the low beam. This consistency makes replacements easier and lets you keep fewer spares on hand. Not all trims came with factory fog lights, so inspect your bumper before buying replacement bulbs.

The daytime running lights (DRLs) on US-spec 2014 Focus models are typically integrated with the low beam headlight circuit, so there is no separate bulb. For Canadian models or those equipped with dedicated DRLs, consult the manual, as these sometimes use a 7443 or similar wedge bulb. Always confirm your vehicle’s wiring to avoid confusion between DRL and standard low beam operation.

Front Turn Signal and Parking Light Bulbs

The front turn signal bulbs on the 2014 Focus are size 3457A, commonly available as an amber wedge bulb. This bulb handles both turn and parking light functions in the front housing. You can find these bulbs in standard incandescent or LED versions. When using LEDs, make sure they are CANbus-compatible to prevent hyper-flashing or dash errors.

Accessing the front turn signal bulb requires removing the headlight assembly, which is held by a few bolts and a wiring connector. Once the headlight is out, the turn signal socket twists free with a quarter-turn counterclockwise. Always check for corrosion or melting on the socket when replacing an old bulb-damage here can affect bulb life and signal function.

Taillight, Brake, and Rear Turn Signal Bulb Sizes

The rear light setup on the 2014 Focus uses a combination of bulbs. The tail and brake lights use a size 3157 bulb, which serves both running and brake/stop light functions. The rear turn signals use 7440A (amber) bulbs. Reverse lights in the hatchback and sedan take a 921 bulb.

When replacing rear bulbs, open the trunk and remove the taillight assembly by unscrewing the retaining fasteners from inside the trunk liner. Gently unclip the housing and pull it straight out to access the bulbs. It’s wise to replace bulbs in pairs to keep brightness and color consistent across both sides of the car. For longer life and quicker illumination, consider upgrading brake and tail bulbs to LED versions, but again, check for compatibility with your vehicle’s system.

License Plate, Side Marker, and Backup Bulbs

The license plate lights on the 2014 Ford Focus use a 168 or 194 bulb, both of which are interchangeable wedge types. These bulbs are easily accessed from underneath the trunk lid by popping off the clear plastic lens. Replacing them with LED versions can give a brighter, whiter look and last much longer than standard incandescent bulbs.

Side marker lights, found on the corners of the front and rear bumpers, use the same 194 or 168 wedge bulb. For the reverse/backup lights, the correct size is a 921 bulb. When swapping these for LEDs, be aware that some cheaper LEDs can cause error messages or flickering, so test before final installation.

Interior Bulb Sizes: Dome, Map, and Trunk

Inside the 2014 Focus, the dome (overhead) and map lights both use a 194 wedge bulb. The trunk light also takes a 194 or 168 bulb. If your Focus includes vanity mirror lights (inside the sun visor), these are also 194 bulbs. These bulbs are some of the most common in automotive lighting and are easy to replace without special tools.

If you want a brighter cabin, white LEDs are a popular upgrade for interior lights. Just make sure the replacement bulbs fit inside the housing and don’t interfere with the lens cover. When changing any interior light, switch off the lamp and let the old bulb cool down first to avoid burns.

Tips for Successful Bulb Replacement

Before buying bulbs, double-check your Focus’s trim level and equipment. Some European-built Focus vehicles or those with special lighting packages may have different part numbers. Always consult your owner’s manual or look directly at the bulb base for the size stamped into the plastic or metal.

Handle new bulbs with clean gloves or a paper towel, especially halogen bulbs, since skin oils can cause early failure. Test all new bulbs before fully reassembling light housings. If you opt for LED upgrades, keep the original bulbs as spares in case of compatibility problems. Finally, if a new bulb doesn’t light up, check the socket contacts and related fuses.

Frequently asked questions