The taillight/stop bulb for a 2010 Ford F-150 is typically a 3157 dual‑filament bulb per side, with a separate bulb used for the reverse light.
In practice, the 3157 bulb handles the taillight, brake, and turn-signal functions in most 2010 F-150 taillight assemblies. Some markets or trim levels may use an 3157A variant for amber turn signals. The exact bulb can vary by region or options, so verify by inspecting the bulb base or checking the owner's manual or Ford parts diagram for your specific VIN.
Common bulb sizes you may encounter in the 2010 F-150 taillights
Before listing the sizes, here is a quick note: the main taillight function is normally a single 3157 dual‑filament bulb per side. There are a couple of variants you might see depending on region or trim.
- Taillight/Brake/Turn bulb: 3157 (dual-filament)
- Amber turn-signal variant (where applicable): 3157A
If your truck uses a variant other than standard 3157, check the markings on the existing bulb or consult Ford’s parts diagram for your exact vehicle configuration.
How to verify the exact bulb size and replace it
Follow these steps to confirm the correct bulb size and complete replacement:
- Access the taillight assembly from inside the cargo area or by removing the tailgate/lens cover as required to view the bulb.
- Remove the current bulb and read the size marked on the base, or compare it to a 3157/3157A replacement to confirm fit.
- Purchase a 3157 (or 3157A if your turn signal is amber) and install, ensuring the gasket/seal is reinstalled to keep moisture out.
Conclusion: For most 2010 F-150 models, the standard replacement size for the taillight/brake function is 3157, with 3157A as a possible variant for amber turn signals. Always verify with the bulb in your hand or the VIN-specific Ford diagram to avoid mismatches.
Where to buy and upgrade options
Bulbs can be purchased at auto parts stores, big-box retailers, or online. If you’re considering upgrading to LED, ensure compatibility with your taillight housing and vehicle CAN bus to avoid bulb-out warnings.
- 3157 dual-filament bulbs (standard replacement)
- 3157A amber variants (if required by your configuration)
- LED replacements or kits (check compatibility and resistors if needed)
Always confirm the exact bulb size using the methods above or by consulting the dealer parts diagram for your specific 2010 F-150 configuration.
Summary
For a 2010 Ford F-150, the typical brake light/taillight bulb is a 3157 dual-filament bulb per side, with a separate bulb used for the reverse light. Some markets or trims may use the 3157A amber variant for the turn signal. Verify the exact bulb size by checking the current bulb, the owner’s manual, or a VIN-specific Ford parts diagram, and replace bulbs in pairs when possible for balanced brightness.