2019 Ford F-250 Super Duty Bulb Size Guide

The 2019 Ford F-250 Super Duty is an absolute powerhouse, built for serious towing, hauling, and off-road capability. But whether you are navigating dark country roads or backing a heavy trailer into a tight spot at night, having properly functioning exterior and interior lighting is critical. Depending on your trim level—from the work-ready XL to the luxurious Platinum or Limited—your F-250 may be equipped with standard halogen housings or premium factory LED lighting packages.

As an ASE-certified master technician, I’ve put together this comprehensive bulb size guide for your 2019 F-250 Super Duty to help you order the correct replacements and upgrades without the guesswork.

Quick reference

Note: Trims with factory LED lighting packages (often Lariat and above, or as optional packages) utilize sealed LED modules for headlights, taillights, and fog lights, which cannot be serviced with standard drop-in bulbs. The table below represents the standard halogen-equipped models.

LED vs halogen upgrade considerations

Upgrading your factory halogen H13 headlights and 3157 tail lights to aftermarket LEDs is one of the most popular modifications for the F-250 Super Duty. However, the Ford electrical system is heavily monitored by the Body Control Module (BCM).

• CANBUS Errors and Hyperflashing: LED bulbs draw significantly less power than halogens. If you install aftermarket LEDs in the turn signals without load resistors or a CANBUS-compatible decoder, your truck will likely experience "hyperflashing" (rapid blinking) or throw a "bulb out" warning on the dash.
• Headlight Clearances and Dust Covers: H13 LED headlight bulbs usually feature cooling fans or large heat sinks. Ensure the aftermarket bulb you choose fits behind the factory headlight dust cover to prevent moisture intrusion, which can quickly ruin the housing.
• Beam Pattern: The F-250’s massive reflector housings are designed for the omnidirectional light output of halogen bulbs. Cheap LED bulbs can scatter light, blinding oncoming drivers. Look for high-quality LEDs that replicate the exact placement of the original halogen filament.

How to replace each bulb

Here are some quick technician tips for swapping out the most common bulbs on your 2019 Ford F-250:

• Headlights (Low/High Beam): The 2019 F-250 uses a dual-filament H13 bulb for both high and low beams. Accessing them requires removing the front grille and the headlight housing bolts. While this sounds daunting, the grille is held on by a series of clips and a few bolts at the top. Once the housing is pulled forward, twist the bulb counterclockwise to remove it.
• Fog Lights: These are easily accessible from under the front bumper. Simply reach up behind the fog light assembly, unclip the wiring harness, and twist the 9140 bulb out.
• Tail, Brake, and Rear Turn Signals: Drop the tailgate and remove the two 8mm bolts holding the taillight assembly to the bed. Carefully pull the assembly straight back to pop it off its retention pins. The 3157 bulbs simply twist out of the back of the housing.
• License Plate: Reach up under the rear bumper, grasp the bulb socket, and give it a quarter-turn counterclockwise. Pull the 194 wedge bulb straight out.
• Cargo/3rd Brake Light: Remove the four screws securing the housing to the roof of the cab. Use a plastic trim tool to gently break the weather seal without scratching the paint.

Common lighting issues for this generation

The 2017–2019 Ford Super Duty trucks are incredibly robust, but they do have a few known quirks when it comes to lighting:

1. Moisture in the Headlights: Some halogen and LED factory housings are prone to condensation build-up. If the moisture doesn't burn off after the lights have been on for 20 minutes, inspect the dust covers or housing seals for cracks.
2. Blind Spot Information System (BLIS) Taillights: If you have the factory LED taillights with BLIS sensors, a cracked taillight lens can let water in and destroy the expensive radar module housed inside. Address any lens cracks immediately with sealant or replacement.
3. Trailer Tow Connector Faults: Sometimes, a short in a trailer you are towing can blow the dedicated lighting fuses for the trailer harness in the truck’s fuse box, leaving you thinking your truck's tail lights are the issue.

Whether you're doing a simple halogen bulb replacement or an intricate LED upgrade, ensuring your lighting is up to spec keeps you and your cargo safe. If you need help diagnosing a complex electrical issue or prefer to have a professional install your upgrades, find a trusted shop on Repairius.