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- Packages: Includes one pair (2pcs) 2835-SMD 4257/4257NA LED switchback bulbs, super bright 12V turn signal lights replacement for auto cars, trucks, motorcycles like 2019-2021 Ford F-150 front turn signal lights bulbs.
- Features: Dual Color: 6000K xenon white & amber yellow: Light white for parking lights or daytime running lights. Light up amber-off-amber-off for turn signal lights instead of amber all the time to make more noticeable.
- LED Chips: Each 4257/4257na LED switchback bulb is equipped with 8pcs high power and high illumination 2835 SMD chipsets.
- Easy fitment: T25 wedge dual fitment bulb, for some vehicles, extra load resistors maybe required to avoid the hyper flash or error code.
- Light Output: Each 4257/4257NA LED switchback bulb light up to 1500 lumens, total 3000 lumens for both 4157 3157 LED switchback bulbs
- Color switch: 6000K xenon white/Amber yellow
- Cross reference number: 4257, 4257NA, 4257NAK, 4257NALL, etc.
- Applications: Used for replacing halogen/incandescent or damaged turn signal lights for better vision and safer driving.
- Lifespan: More than 30,000hrs in 25°C ambient.
30, 000 hours
LED Chip Type
High power illumination 2835 SMD
-20~+40 °C (-4~+104 °F)
Cross Reference Number
4257, 4257NA, 4257NAK, 4257NALL
Alla Lighting warrants that its LED Conversion Kits will be free from defects in material and workmanship for ONE year from the date of purchase by the Original Purchaser. This warranty does not apply to any products that have been subjected to misuse, mishandling, misapplication, neglect (including but not limited to improper maintenance), improper installation, act of nature, motor vehicle accidents or alterations.
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- One pair (2 pieces) 2835-SMD 4257/4257NA LED switchback bulbs (Turn signal lights replacement)
- Well packed in solid box
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The order arrived quickly, the treatment was excellent. The LEDs work and illuminate excellently and look great
Works really well and is easy to install
Great replacement for standard bulbs,LEDs are so much brighter,Easy install,No error msg from dash!
They had what I needed. My 2020 F250 had all kinds of bulbs. Switched over to LED. All of them. Had them all.
These 4257 switchbacks were what I had been looking for since purchasing my truck. They work well as white daytime running lights and are bright as amber turn signals.
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What are CAN Bus LED Bulbs?
when we say CAN Bus LED bulbs, they are the easy plug-and- play LED lights bulbs which are made specifically for the vehicles built-in CAN-Bus system. These bulbs work with your vehicle's advanced computer system, so when your vehicle's computer reads them, they respond back correctly.
To see if your vehicle operates with a CAN Bus system, simply remove the bulb you're looking to replace, start your vehicle, and if you have a "Bulb Out" message on your dash you have a CAN Bus system.
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