2021–2025 Ford F-150 4257 Red LED Rear Brake & Turn Signal Replacement Bulbs for 3X Visibility | 300% Brighter 1600LM (PAIR) | Built-in Resistor, No Hyperflash
2021–2025 Ford F-150 4257 Red LED Rear Brake & Turn Signal Replacement Bulbs for 3X Visibility | 300% Brighter 1600LM (PAIR) | Built-in Resistor, No Hyperflash is backordered and will ship as soon as it is back in stock.
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2021–2025 Ford F-150 4257 Red LED Rear Brake & Turn Signal Repl...
Why This 4257 LED Brake Bulb Beats Everything Else
- Brake lights compete with sunlight, rain, and surrounding vehicles. Halogen bulbs output ~300–400 lumens, limiting visibility , whereas 1600-lumen LED output improves detection distance, helping following drivers react faster.
- Direct Fit for 2021–2025 Ford F-150 truck models, go to compatibility for exact fitment or use our vehicle search tool to verify fit.
- 12 high-power LEDs produce 1600 lumens across a 360° beam angle, ensuring visibility from rear and side angles. This improves braking awareness, lane-change signalling, and collision prevention.
- Dual-intensity 4257 design supports brake, turn, and parking functions, switching between low and high output instantly ensuring clear signal separation and faster driver recognition.
- LED bulbs draw lower current than halogen bulbs, triggering rapid blinking. Built-in resistor simulates factory load (~60–120 flashes/min), restoring correct flash rate without external resistors.
- Excess heat reduces LED efficiency and lifespan. The fan + metal heatsink system regulates temperature, maintaining stable brightness output and extending lifespan up to 10× longer than halogen bulbs.
- Designed in the USA and built with Japanese components, ensuring durability and precision. Improved thermal and electrical stability delivers consistent 1600-lumen output and long-term reliability.
- Installation time is approximately 10 minutes. There is no need for slicing or complicated wiring. This light is a plug-and-play installation and operation.
CA Residents: WARNING: Cancer and Reproductive Harm - www.P65Warnings.ca.gov
Do you have questions about the application, installation, shipping, warranty, or more? Do not hesitate to reach out to Underground Lighting and talk to a specialist. Chat with us online by hitting the chat button or call us at (561) 918-5225. We are here to help!
Also, check our full collection of Turn signal bulb.
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COMPATIBILITY
Received bulbs within 1 week. Installation took 10-15 minutes. Much brighter! No hyperflashing or error codes. Here are some additional notes: When installing the bulb into the socket, make sure they are fully seated. It may look and feel like they are seated, but if they don't illuminate then they may require an additional push about 1/8" to fully seat the bulb into the socket. Very tight fit. So tight that it expands the socket just enough that it is difficult to reinsert back into the taillight assembly without applying additional pressure. The cooling fans operate only when the bulb is bright (brake light or turn signal). When the brake is applied the fans run continuously and when the turn signals are used they cycle on and off to match the blinking. The fans are not silent, but can be heard when in operation and standing by the rear of the truck. When backing up in reverse, the rear-view camera will show significantly more red in the image when the brake is applied than with the stock incandescent bulb. Still a good image, just more red.
These are better then expected!! Installed when sun was up and even in direct sunlight, they are very bright. (Light on Left)
It is fantastic! I go it for my 2024 F150 XLT 303A pkg with one bulb on each tail light. Everything is as described. Easy installation. No slight delays in lighting reaction timing like other competing brands, No hyperflash as well. Now let's hope the bulbs are long lasting. Very satisfied so far.
Installed on my XLT, & they do excellent as described, I’ll be buying again for my fleet F150’s
Very easy to install and are VERY bright. I have A built in flasher on my 2021 STX f-150 and it worked great!
They install seamlessly work flawlessly, no hyper flashing and you can barely notice there is even a slight hum. Highly recommend! Pic shows LED bulb on top and oem halogen on bottom for comparison!
They install seamlessly work flawlessly, no hyper flashing and you can barely notice there is even a slight hum. Highly recommend! Pic shows LED bulb on top and oem halogen on bottom for comparison!
2021–2025 Ford F-150 4257 Red LED Rear Brake & Turn Signal Replacement Bulbs for 3X Visibility | 300% Brighter 1600LM (PAIR) | Built-in Resistor, No Hyperflash
Only lasted about 2 years. That’s relatively short. But so bright and easy to install I decided to buy replacements. Hopefully, the replacements will have a longer lifespan.
HI, On avg they last 2-3 years as they have resistors and that causes heat. Resistors dont last for ever unforently. Without them they would last but then you would have hyperflash.
2021-25 Ford F150 Red Rear Brake/ Turn Signal LED Bulb W/ Built in Resistor No hyperflash (PAIR)
2021-25 Ford F150 Red Rear Brake/ Turn Signal LED Bulb W/ Built in Resistor No hyperflash (PAIR)
The bulbs are great, a hundred times better quality than the f150 led's. The main problem is: the base of the bulb is wider than the socket, if you force it the socket is expanding - almost to cracking, this doesn't let the socket to slide into the housing. You will have to send both sides- left and the right with a millimeter from each side in order to fit. A fine metal file is doing the job. One more time, the bulbs are great, in my opinion the best on the market.
Works great, no hyperflash
2021-25 Ford F150 Red Rear Brake/ Turn Signal LED Bulb W/ Built in Resistor No hyperflash (PAIR)
Wow!!! Amazing LEDs ! Suoer bright! The only thing is that these were a millimiter too big compare to the stock housing so i had to force it a bit to install them into the socket. But they work great and the hosusing was fine.
2021-25 Ford F150 Red Rear Brake/ Turn Signal LED Bulb W/ Built in Resistor No hyperflash (PAIR)
Thank you for your service. Lites look awesome on the truck. Thanks again
Great company to deal with
Love your product. The only issue that I have had is that after about a year some of the individual led squares stop working and I have to replace the bulb.
First set lasted 4 months, got too hot and the led chips came off and the bulbs went into hyper flash. That was covered under warranty. 2nd set lasted about 2 years then went hyper flash. This is my LAST set. Too expensive to replace every couple years. I thought an led would last a lot longer!
This is my second order; I’m happy with the purchase. And the Customer Service.
High-quality, super-bright bulbs. A must-have for your F150. Replaces your factory incandescent bulbs. What I like most is that you don't need to connect resistors; they're built into the bulb. Another plus! Fast shipping.
2021-24 Ford F150 Red Rear Brake/ Turn Signal LED Bulb W/ Built in Resistor No hyperflash (PAIR)
They were an easy install. I was pleasantly surprised how much better the light was. I would buy again
These LEDs do not disappoint! Tail light/brake light combo are definitely bright and will get anyone’s attention. No hyper flash, which is what I was looking for without adding an additional resistor. Will be ordering the full line up soon!
Very well made products well buy again
Has anyone used these on a 2022 F150 with BLIS. Is there any interference with any of the systems that use rf signals, ie key fob, tpms etc?
Yes they work with blis package.
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