LED Fog Light Bulbs

5202/2504: S-V.4


PART #: 2 x SN.LED100

[ In Stock: 0 pieces ]

Product Details

Cutting-Edge LED Chip Technology: We challenge you to find another bulb on the market that produces as much light as the S-V.4 while still retaining a perfect beam pattern! The S-V.4 LED fog light bulbs utilize the newest multi-core LED chip styles that feature one long crystal over the entire diode array to create a seamless light output source. Most LED fog light bulbs on the market essentially create 2, 3, 4, or 6 different light sources by stacking 2-6 different chips together in a line. The NLW1860CV2 chips are based on XD14 technology developed by CREE, this custom designed LED chip has no light gap between diodes which gives it a closer function compared to the original filament bulb, thus achieving a greater beam accuracy that works best in any fog light or fog light housing.

Thermal Management: The S-V.4 LED fog light bulbs are built from the highest quality 6063 aluminum material originally designed for aircraft and space craft applications. This material has amazing heat dissipation qualities as well as is 100% corrosion resistant in automotive applications. On the bottom of the heat sink lies a high-speed double ball bearing micro-fan that is fully submersible and waterproof! If the fan stops working, the sophisticated thermal management system inside the bulb will dim the fog light until it is safe to use. Considering that these bulbs can be up to 6x brighter than your original bulbs, even at 50% power, they will still be safe to use on the street in most situations. The heavy duty LED bulb power driver has a built in smart fan circuit that ramps up the speed of the cooling fan as necessary so it's as quiet as possible when it can be.

Compact Design: Most LED fog light bulbs that use a fan-based active cooling system are known for not being small or easy to fit inside fog light housings with a dust cover. The S-V.4 is designed to be as compact as possible. The mounting depth is 20-25mm on most bulb variants, low profile enough to fit even the most demanding of spaces! The heat sink / fan diameter is only 39mm! The LED driver on this bulb is larger than the previous generation, but it is still the right size to fit inside most fog light housings comfortably.

CANBUS Compliant: Do your LED fog light bulbs flicker, pulse, give you errors and warnings on the dash? Do they even work at all?? Chances are your vehicle employs some version of CANBUS or PWM to control the lighting functions. These complex OEM systems rely on the physical readings of your original fog light filament to determine of your bulbs are operating properly. Simply put, when you install an LED fog light bulb, that function sometime determines that the bulb is broken, or missing entirely and will cause the truck to malfunction. Sometimes this means they don't come on at all, other times they flash, and sometimes they will suddenly shut off while you're driving! All of these things are solved by the built in CANBUS integration circuit found already inside the S-V.4 LED driver. Sometimes an extra PWM module may still be necessary, but this bulb is totally plug and play on the vast majority of vehicles on the road today, even brand new models!

Dimming: The S-V.4 bulbs dim less and less bright until they turn off at 8V DC.

DRL: If the DRL function is lower than 8V DC, the bulbs will just not turn on at all. But if they use CANBUS or PWM at 12V DC they will work normally.

CANBUS: Some vehicles use CANBUS function to monitor and control your fog light and fog light bulbs. The S-V.4 has a slightly larger LED driver than normal because the CANBUS anti-flicker and anti-error circuitry is built in! No external components should be needed to install these bulbs with a CANBUS-Equipped vehicle. Easy plug and play installation. 2 year warranty.

Want your fog lights: to shine brighter and further but your current bulbs just aren't cutting it? Want to get rid of that old yellow light tint and give your ride an updated look with a cool white light beam? Look no further! These LED fog light bulbs will cast a precise light beam that will give you increased visibility, a wider viewing angle, and a much longer lifetime over conventional halogen bulbs.

The S-V.4: comes in every popular style to replace any fog light or fog light bulb. Match the bulb number of your original application (example: 9005, 9006, H4, H13, etc...) with the matching S-V.4 LED fog light bulb and replace bulb for bulb. Fits all applications including projectors, and fog lights with dust shield covers.

HR Tested: Here at Headlight Revolution, we spend a lot of time installing and testing the products you'll find for sale. We don't favor any particular brand, so our commitment to you is that we'll deliver the best product for your application, period. To see all of the compatible lighting upgrades for your vehicle, use the Buyer's Guide on our homepage! Be sure to check out the HR YouTube channel for hundreds of helpful install and review videos!

Product Specs

  • What's Included

  • LED Bulbs: 2x (One Pair) 5202/2504 S-V.4 LED Bulbs

  • LED Drivers: 2x S-V.4

  • Wiring: 5202 Plug and Play Inputs

  • Warranty:2 Years (Click for Details)

  • Compatibility

  • BASE/FITMENT: 5202/2504/PSX24W

  • Application: HID and LED bulbs are street legal in the USA for Fog Light use only. Not compliant with DOT / FMVSS108 and not street legal in the USA for Headlights. Legal for off-road use in Snowmobile and ATV headlights and off-road racing use only auxiliary or forward lighting. International street legality varies by country. For detailed clarification on street use, CLICK HERE Note: This usage regulation is not unique to Headlight Revolution bulbs. All LED and HID bulbs from all other brands, regardless of marketing claims, are prohibited from street use in halogen headlights in the USA.



  • Do I need PWM / Anti-Flicker Modules?:

  • Use in Fog Lights: Unlikely

  • Low beams that double as Daytime Running Light: Likely

  • High beams that double as Daytime Running Light: Likely

  • Vehicle is late model American (Chrysler, Dodge, Jeep, Ford, GM): Likely

  • Tech Specs

  • Intensity: 3,600lm

  • Power: 36w

  • Input Voltage: 8-32V DC

  • Current: 2.5A @ 14V DC

  • Light Color: 6000K (Cool White)

Product Reviews

4.8 out of 5 stars

17 Reviews   Write a Review

5 out of 5 stars

Head lights & foglights

melvin Abarca

They recommended both headlights and fog lights and IÄôm very happy with my purchased for my Jeep. I will buy from them again in the near future.

5 out of 5 stars

S-V.4 LED 5202 / 2504 Bulbs

Kevin German

Installed the lows and fogs on my 2019 Silverado 2500hd LTZ. These are a dramatic improvement over stock! Haven't had a chance to use them in rain or snow yet, but so far very happy with the purchase! The only difficulty I had was the fog lights, and it wasn't a bulb issue. It's the lock design that GM decided to use is semi difficult to get bulbs to lock in and be secure.

5 out of 5 stars

Bright idea


Bright idea

5 out of 5 stars


Bruce Westergaard

Super bright fog lights!

5 out of 5 stars

Very Bright. Big improvement from

Rob Sullivan

Very Bright. Big improvement from stock. They were a little hard to push in and clip into the light

2 out of 5 stars

Holy hell

John Spaulding

The quality and light output are fantastic as far as I can tell. My Jeep is 6 years old. I had a lot of difficulty getting the old bulbs out (I actually thought I was breaking the housing. After that, the LED's didn't fit very well. No instructions, at least not detailed enough to figure it out. For crying out loud, it's just a damn lightbulb! Finally used what I would call excessive force to get them in the housing. I have not yet figured out how to clock the bulb. I reached out via phone, email, and FB messenger to both Headlight Revolution and the same to GTR. No response. No support phone number. I was and still am very frustrated with the whole process and lack of anyone to talk to. It was a Friday at 2 in the afternoon. Totally ridiculous. Both companies say they are currently backlogged with holiday orders and emails! That was almost a month ago.

5 out of 5 stars

The bulbs are 10 times

J Weaver

The bulbs are 10 times brighter than stock bulbs. The fog lights let me see the sides of the road which help me when it is snowing.

5 out of 5 stars

Just installed these in my

Scott Celeya

Just installed these in my 2012 Silverado live the color love the brightness installed headlights and fog lights. So far they're great

4 out of 5 stars

Great fog lights

Taylor Hart

Perfect for my 2015 Silverado 1500. Used zip ties to hold the led conversion box in place.

5 out of 5 stars

Fits 2016 Jeep Cherokee Fog Lights


It fits with no error message in fog lights. Super bright.