2019 Ford F-150 / F-250 / F-350 LED DRL Front Turn Signal Bulbs

For a standard front turn signal on a 2019 Ford F-150, amber is the appropriate signal color. This bulb is available in an amber option, while the page also lists an amber-white variant for compatible applications.

Yes. The 4257 bulb is designed for the dual-function front circuit, working as both the DRL and turn signal. It supports the factory-style lower-intensity DRL function and the brighter output used when the turn signal is activated.

No. The front turn signal and DRL circuit operates separately from the automatic headlight and rain-sensing systems. Replacing the factory bulb with this LED does not require changes to those systems.

The 1-year manufacturer warranty covers defects that occur during normal use, including LED chip failure, cooling-system problems, and electrical faults involving the built-in resistor or CANBUS system. Physical damage, incorrect installation, corrosion, and water ingress caused by damaged housings are excluded.

Check the owner's manual or compare the existing bulb with the OEM specification for the front turn signal/DRL circuit. The 2019 model year can use either 4257 or 7443 depending on the truck's trim, so confirming the original bulb size before ordering is important.

Start the engine before testing the turn signals. The vehicle's BCM needs the engine running to activate and detect the load provided by the built-in resistor. If hyperflash continues after the engine is running, also check the bulb fitment and electrical connection.

No. LED bulbs generally operate at a lower temperature than incandescent bulbs, and this product uses an advanced cooling system to manage heat. The page also lists a rated lifespan of 25,000+ hours for the LED.

No. The LED does produce heat, but it is designed to run cooler than the original incandescent bulb. The built-in cooling system helps manage the heat generated during operation.

The 2019 Ford F-150 LED front turn signal bulbs cost $59.99 per pair. The set includes two LED bulbs with built-in resistors to help prevent hyperflashing, plus a 1-year warranty.