4257 LumX-FC (Reverse)

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  • Regular price $69.99

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Fan Cooled Technology in a replacement bulb!  

(Sold as set of 2 Bulbs)


LumX has been pushing the boundaries of what is possible when it comes to external LED bulbs. While other manufacturers focus on headlight bulbs, we're trying to create extremely bright, efficient replacement bulbs for other applications. 


The LumX FC series is the latest example of this push. We packed 50 separate EMC LED chips onto this one bulb! This creates a staggering 2000 Lumens PER BULB! This would not be possible without an efficient cooling method. For this we designed, from what we've seen, to be one of the first reverse lights with a built-in electronic fan to cool the bulb! 


There are certain applications where our normal heat sink cooled reverse light set will not work. For those applications we've created the FC series! "Fan Cooled"


This creates an extremely universal bulb that will work on any application where the socket fits! 


Bulb plugs into a circuit base? ☑️

Vehicle have blind spot monitoring? ☑️

Long as its a 4257 base, this bulb will fit ☑️



Socket Type4257

Cooling Method - LED's cooled by electric fan mounted on top of bulb

Fully Integrated CanBus - ERROR FREE (Will not cause error messages on dashboard or flicker)

Lumens - 2000 Lumens Per Bulb 

Color - 6000K Pure White (No Blue Tint)

LED Chips  - EMC-2016

Warranty - 1 Year 

Voltage - DC 9V-20V

Lifespan - 30,000 Hours


Power - 21.6~28.8W

Customer Reviews

Based on 23 reviews
Christopher Adames
3156 LumX-FC (Reverse)?

Awesome reverse lights. Super bright. Lights up everything behind me. I live in a very rural area. With nothing more than the moonlight and stars to light my night up. Couldn't see anything with my traditional back up lights. Now with these 3156 LumX-FC (Reverse)? I can see everything and anything behind me.

Larry Mckay
Back up lights

Supper bright back up lights well worth the money

Louis Critelli

Unfortunately they won’t work on my truck still waiting for a refund

Christina Webb

3156 LumX-FC (Reverse)

Maurice Perez
Super Bright!

These reverse lights are a must have!
My windows are tinted and made reversing almost impossible with out putting the front windows down. Now with these diesel LEDs, I don't have to put the windows down and I see way more than I did with the stock bulbs with out the tint. Very quick on the Shipping also. They arrived 2 days after ordering. I don't usually leave reviews, but these lights are worth every penny and more. 10 stars!