LED Fog light Bulbs

H11/H9/H8: Diode Dynamics SL1 / SLF


PART #: 1 x DD0220P

[ In Stock: 0 pieces ]

Product Details

SL1 H8 LED Bulbs: Diode Dynamics came to the market with these SL1 H8 LED Bulbs and we couldn't be much more impressed. They rightly call attention to the exceptionally high build quality and reliability of these lights as well as their smartly designed hotspot and clear optics. Take a deeper dive into what makes the SL1 Special below.

Optimized Performance: We all want performance without compromise and the SL1 delivers that. Unlike other bulbs that claim insane lumen numbers, or aren't legal on the road, the SL1 Fog Light backs up its claims with clear evidence of their ability to produce brighter light (1630 lumens) in a clear and well-defined beam pattern that reduces glare and wasted light. They can manage that thanks to their in-house advanced optical design software which uses a process called 'ray tracing' to simulate exactly what each ray of light is doing as it leaves the light source and works its way onto the target. Through this process, they've ensured that every ray possible brightens up your path.

Rugged Design: While brightness is key in any good light, Diode Dynamics took exception to all the cheap junk out there that starts out bright but can't stand up to the workload of OEM lights. The SL1 was built from the ground up to meet or exceed the reliability standards of OEM lighting. It's been torture-tested from temperatures ranging from -40 to 185 degrees F. Combine that with stress relief points in the wiring harness, solderless terminals, and exclusive zinc castings and you can see why we like it so much.

Size and Heat: A major issue with the vast majority of LED lights on the market today is heat evacuation. To combat high temperatures, many manufacturers incorporate large fans or heat sinks into the bulb assembly. More often than not, these aren't even adequate enough to ensure a long life. At the same time, those large parts ensure that fitment is a pain thanks to the additional heft. Diode Dynamics works around this problem with intelligent engineering in the form of a MagLev fan that won't create interference as it cools the bulb. Because of this high-end tech, the bulb isn't much larger than the original halogen unit, allowing for easier installation and use.

Boost Mode Circuitry: In keeping with their OEM or better quality control, Diode Dynamics uses the same Boost Most Circuitry that you'd find in an OEM LED bulb to ensure that no electrical system can cause an uneven load on the LEDs and burn them out. It's even capable of handling many complex systems that would otherwise require an additional Canbus harness.

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 "buyers 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

  • Quantity: Two (2)

  • Warranty: 3 year warranty

  • 100%: Satisfaction Guarantee

  • Compatibility

  • Bulb Size: H11

  • DRL Function: Operates at full brightness for DRL

  • 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 Morimoto 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.



  • Tech Specs

  • Measured Lumens: 1630 (per bulb)

  • Color Temp (CCT): 6000K

  • Power (watts): 20.2

  • Operating Voltage: 5-16V

  • Current (amps @ 13.2V): 1.58

  • Polarity: Polarity Specific

  • Operating Temperature: -40C to 85C (-40F to 185F)

  • LED Emitter: Luxeon Z E

  • Connector(s): OEM-Size Plug and Play

  • Driver Features: External, Waterproof, Constant Current

  • Driver Dimensions: 2.19in x 1.13in x 0.56in

  • Materials: Copper PCB, PP-TD30 Base, Zinc Heatsink

  • Cooling: Active, Mag-Lev Microfan

  • Compliance Ratings: SAE J575 Durability Test

  • Patent: US D824052

  • Weight (lb): 1.10

Product Reviews

4.4 out of 5 stars

93 Reviews   Write a Review

5 out of 5 stars

Freightliner Cascadia H11

Mark Franklin  

I drive truck for a living and wanted to see better at night.These led lights make it alot easier to see at night. Plug right in.Very easy to install. Seem to be good quality.

5 out of 5 stars

Love so easy to installation

Manuel Roman  

Love so easy to installation

5 out of 5 stars

Sl1 headlights!!

Robert Miller  

Love the new headlights, perfect cutoff for my reflector headlight housings on my 2018 F150. Will be ordering the fog lights here within a day or too. Love the company too, have been answering all my questions that I've had about other products too!! Highly recommend!!

5 out of 5 stars

Awesome headlights!


I got these because I had previous experience and Wanted the same great light again! These are easy to install and work great. Small fan instead of a huge heatsink is great too. These were installed on my 2019 Tahoe projector lights and replaced the yellow stock halogens. Looks modern now. Also, on this vehicle, the PWM adapter wasn't needed, and HR cheerfully refunded my money without question.... That's great customer service!

4 out of 5 stars

Product really works great as


Product really works great as described. I gave it a 4 stars due to late arrival. Took a week to let me know that they out of stock then took another week to ship after I followed up.

5 out of 5 stars

Great fog lights! Excellent service!


I watched all the HR reviews of the various LED fog lamps and decided on the Diode Dynamics based on the review, and that they were made in America. I'm not disappointed. It was a small feat installing these in my 2015 Honda Pilot, but I'm very pleased with the results.

4 out of 5 stars

output was okay


Bought a pair from amazon for my mazda3 and initially found them pretty good but the more I have driven the more I have noticed some awful shadows and leaked light. Pretty sure I installed them correctly as they were straight down and i didnt have to adjust the collar on them. Maybe I need to adjust the headlight itself but right now the left and right are leaving some really distracting lines of shadow on the sides especially the left side.


3 out of 5 stars

Not the greatest


Just wanted to leave a quick review to say that these are not anything special and for the price , I can say they're not worth it from my personal experience. The problem that I faced was the tremendous amount of shadows, and reflections going on in my projector housings. The beam would be hitting the reflector part of my headlights which left curves streaks of shadows and lines, and a big gap behind where the headlights should be shooting.

5 out of 5 stars

Work well in projectors


I've tried at least four different LEDs in my Optima halogen projectors, including the S-V.4 V.3s... which IMO did not perform well at all in the stock projectors. These are by far the best. Bright with good throw and cutoff. No weird shadows.
Yes, a bit pricey, but good performance, warranty and made in the USA.
Overall impressed. Would definitely purchase again.

5 out of 5 stars

Sharp beam pattern


Sharp beam pattern