4257 LumX-FC (Reverse)

Regular price $99.99 USD
Regular price Sale price $99.99 USD
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1 Year Warranty
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Fan-cooled power in a replacement bulb. Sold as a set of 2 bulbs.

Why LumX-FC

  • 2,000 lumens per bulb. We packed 50 separate EMC LED chips onto one bulb. That output isn't possible without serious cooling, so this is one of the first reverse lights with a built-in electric fan.
  • Works where our heat-sink reverse set won't. Some housings don't fit our standard LumX reverse set, so we made the FC ("Fan Cooled") series for them.
  • Fits almost anywhere. Bulb plugs into a circuit board? Vehicle has blind-spot monitoring? As long as it's a 4257 socket, this bulb will fit.
  • Fits sockets: 4257
  • Cooling: Built-in electric fan on top of the bulb
  • CANbus: Fully integrated, error-free (no dash warnings or flicker)
  • Output: 2,000 lumens per bulb
  • Color: 6000K pure white (no blue tint)
  • LED chips: EMC-2016
  • Warranty: 1 Year
  • Voltage: 9–20V DC
  • Lifespan: 30,000 hours
  • Power: 21.6–28.8W

Rest Assured You're Covered

Many of our products come with a limited lifetime warranty! If our limited lifetime warranty is not listed it comes with our minimum 1 year warranty! We don't make you ship back the old bulb.We know your time is valuable. We don't want to ask you to waste it driving to the post office. Have a warranty issue? Contact our daily customer service and we'll get you taken care of!
  • 5 stars: 833 (91%)
  • 4 stars: 36 (4%)
  • 3 stars: 17 (2%)
  • 2 stars: 8 (1%)
  • 1 star: 25 (3%)
Some of the reviews shown are from related products the merchant grouped with this one.
A
Abe Collins (Indianapolis, US)
Might as well be headlights

I was skeptical about dieselleds reverse lights prior to purchasing them, but now? I’m redoing all the lights in my truck with their brand.

T
T. Dunn (Greensboro, US)
BRIGHT

These reverse lights are awesome! I’ve used a set of just bulbs purchased 3-4 years ago from Dieselleds which were so-so bright, no comparison with the 3156’s.

I
I.a.m. (West Jordan, US)
Oh yeah

These are great. Even in the daylight you can see a difference. Nice at our property when it's pitch black. Pics are before and after.

J
Jeff Herther (Chalfont, US)
Trouble with fitment.

I knew what to expect out of these LumX bulbs. I have them installed in another identical vehicle. A minor tolerance difference and these were nearly impossible to install. After a lot of filing and fitting I was able to make them fit, but it was a major annoyance. I am just gald I now get to look foward to years oftl trouble free operation.

M
Michael Verde (Carmel, US)
Beats my Amazon LED’s by a lot

Finally bit the bullet and I love the outcome. Huge difference from my cheap LEDs from Amazon.

G
George Mederos (Miami, US)
Awesome reverse lights

The installation kit is great. Worked perfectly on my 2025 ram 2500, I would definitely recommend these lights.

M
Myke G (Escondido, US)
7440 LumX Reverse lights Honda Odyssey

These lights are super bright reverse lights. I can confirm that they fit the 2014 Honda Odyssey Elite. After watching their install video. I quickly and easily installed the bulbs. Now when I'm in my Odyssey I can't wait to put it in reverse and backup.

B
Brian T. (Newark, US)
2019 Suburban

They are bright. Huge upgrade from stock. I couldn’t see anything behind the truck with the stock halogen bulbs. Now I can actually see. Easy install.

L
Lee Redd (Woodinville, US)
Blind?

Not anymore! These replacement lights are nothing short of awesome! They are so good when it is pitch black outside that I’d like to just drive backwards. They’re that good. Installed in under 15 min on my 2023 Silverado. I couldn’t see anything even with the camera before I put these in. 100% recommend.

D
Dale Moses (Dallas, US)
My 2020 Toyota Tundra

I just installed the LUM X 7440 backup lights on my 2020 Tundra. Installation took about 15 minutes total. These backup lights are amazingly bright! I can’t wait for it to get dark and use them!

M
Michael Reader (Brockton, US)
These lights are AWESOME!

Instructions were easy and so was the installation. Ten minutes of work. These lights should be standard equipment for all vehicles.
(Tailgate was down in both pictures).

M
Mark Davis (Overland Park, US)
Shows stopping Bright!

Was pleasantly surprised .. installation was not too bad lights seem to be snug so far.. so far they are great ! As you can see I like my truck to stand out .. very happy

M
Michael Madsen (Helena, US)
LumX for Tundra

These are plug and play excellent! Wish I had done these sooner!!

W
Wally t (Portland, US)
Backup lights.

Very nice. I can see I don't have to hit another car ever again.

R
Roger Scott (Mentor, US)
Super bright!

The OEM backup lights on a Tacoma are terrible. Saw a Facebook ad for these backup lights. Thought I’d give them a try. They did not disappoint. The only reason for four stars is due to the lack of instructions, or should I say poorly placed instructions. The only instructions visible when opening the shipping box says do not open LEDs until you know if they fit. How do I know if they fit if I’m not supposed to open the LED box. I finally decide to open the LED box anyway and lo and behold there are the instructions. You might want to put the instructions outside of the plastic wrapped LED box.

C
Chad Flattum
Much brighter than the oem halogen bulbs

Install was easy. Kit came with everything needed. Lights are super bright now. Photos are before and after. Lights are actually brighter in person since the camera dims a bit.

W
William (Sidney, US)
Amazing

Best Led's I've ever had. A lot of People told me I overpaid but im sure I paid for quality and longevity. Only time will tell. Love them. Couldn't see a damn thing before and now I can see a good 6-7 feet behind my truck.

R
Rodney Cooper (Carthage, US)
Extremely bright and clean!

I bought reverse lights, blinkers, and running lights and I'm really impressed! Great lights and i will be buying again!

J
Jeremy Blanton (Simpsonville, US)
Reverse lights

Extremely bright. Looking forward to getting the headlights and fog lights

T
Tristan Staley (Sacramento, US)
Great

One of the best purchases I’ve made for my truck

S
Shawn Lachance
Silverado 2500 HD LED reverse lights

These LED lights are an easy & excellent upgrade over the OEM halogen bulbs. This is the 2nd pair for my 2nd Silverado. Highly recommend. I also ordered the LED fog lights, but I haven't installed them just yet.

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