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Discussion Starter #1 (Edited)

Diode Dynamics is pleased to offer SL1 LED Fog Lights for Subaru WRX applications.

If you're looking to improve your Subaru WRX’s visibility at night, you've probably seen plenty of aftermarket LED fog light bulb options. There are plenty of “high performance” LED lights on the market, but they all have their shortcomings. They're too big to install, have no hotspot in the beam pattern, or they simply stop working after just a few months!

With its compact size, optically correct output, thermally-modeled cooling, and boost-mode electrical circuit, Diode Dynamics SL1 LED Fog Light Bulbs are truly some of the best LED fog light bulbs on the market.

Street Legal Output. Don't be fooled by high lumen numbers or "projector specific" bulbs. Your car's fog lights are designed to focus light. If the light source is out of focus, it doesn't matter how bright it is - you won't have a focused hotspot of light to shine down the road - just more glare. To correct this, the SL1 LED fog light bulb, preserving the focus and hotspot, with no added glare. It produces a functional beam pattern on the road, in compliance with photometric standards, for a safe, functional output, which we call Street Legal.

Tested to Perform. We test the SL1 in factory car fog lights and measure the entire beam pattern using specialized equipment. The entire beam pattern is mapped, and we compare the total output to the original equipment, confirming that the SL1 fog light bulb shines more light in the hotspot, without adding extra glare on the road. The results speak for themselves!


Staying Cool. You might’ve seen led fog light kits that use large straps for cooling, or fans that just make noise. These light bulbs run hot, resulting in degradation of output after a few months. When it comes to cooling, proper engineering is required to efficiently remove heat from the bulb. In the SL1, a copper core board, thermal phase-change material, and thermally-modeled zinc casting get heat to the base, where base fins release it, designed for aerodynamic performance in conjunction with the flow rate and pressure of the Sunon bearingless micro fan. The result is a highly effective and reliable cooling system, keeping the SL1’s LED chips running at maximum potential.

Fitment. With its patented design, installing the SL1 LED Fog Light bulb is simple and straightforward, requiring NO cutting or modification. There's no hanging metal straps, just a compact bulb that plugs right into your WRX with a nylon-reinforced shroud. Only slightly larger than a standard halogen bulb, it fits right in the factory fog light housing. The base sizes are keyed specifically to fit your vehicle, not one-size-fits-all!


Reliability. Every part of the SL1 LED Fog Light Bulb for the WRXis engineered with more expensive OEM-grade features to assure quality, such as the Sunon MagLev fan and PCB wire connectors" In short, these are designed, tested, and built to a much higher standard than your average imported led fog light conversion kit. The Diode Dynamics' SL1 LED Fog Light Bulb will keep performing in your WRX for years and is backed by a three-year warranty.


Measured Lumens: 1630 (per bulb)
Color Temp (CCT): 5700K Power (watts): 20.2
Operating Voltage: 5-16V
Current (amps @ 13.2V): 1.58 Polarity:
Polarity Specific LED Emitter: Luxeon Z ES
Connector(s): OEM-Size Plug and Play
Driver Features: External, Waterproof, Constant Current
Materials: Copper PCB, PP-TD30 Base, Zinc Heatsink
Cooling: Active, Mag-Lev Microfan
Compliance Ratings: FMVSS108 Beam Pattern, SAE J575 Durability Test

If you have any questions, please don't hesitate to post, PM, email [email protected]

PM us for the free-shipping code (U.S. forum members only)

Thanks for looking!
Nick C.
Diode Dynamics

Click here to learn more:
Diode Dynamics SL1 LED Fog Light

· Vendor
553 Posts
Discussion Starter #8

We recently released a video explaining the differences between lumens, lux, and candela and which of the 3 determine the true output of an automotive LED bulb or lamp. Check it out above!

Also, don't forget to PM us for free standard-economy USPS shipping!

John C.
Diode Dynamics
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