We’re expanding our SL2 Pro lineup! After plenty of requests from drivers across the country, we’re excited to introduce new H4, H13, and H7 LED headlight bulbs—including the first-ever dual-filament options in the SL2 Pro line. If you’ve been waiting on a true OEM-style LED upgrade in these sizes, the wait is over.
The SL2 Pro is designed and engineered in the USA with a focus on beam pattern accuracy, thermal reliability, and easy fitment. And now, more fitments than ever can take advantage of its performance.
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Overview Video
H13 SL2 Pro LED Bulbs
The H13 LED bulb is commonly used in a wide range of Ford, Jeep, and Dodge/Ram vehicles, including popular models like the Ford Super Duty and Jeep Wrangler. With a powerful 2330-lumen output per bulb, the SL2 Pro provides a major upgrade over stock halogens without sacrificing beam focus or fitment.
This H13 LED headlight bulb features dual-filament functionality with low and high beam operation built in. It installs in minutes with no external drivers or wiring and delivers a serious upgrade in brightness, reliability, and output color.
H4 SL2 Pro LED Bulbs
Also known as 9003 LED bulbs, H4 fitments are commonly found in Honda, Toyota, and Subaru vehicles. Our H4 LED headlight bulb is fully dual-filament, offering 2040 lumens per bulb with crisp, defined low and high beam functionality.
Unlike many generic H4 LED replacement bulbs, the SL2 Pro is designed from the ground up to preserve factory beam pattern and ensure safe, glare-free performance on the road or trail.
H7 SL2 Pro LED Bulbs
The H7 LED bulb is a go-to for many Audi, BMW, Mercedes-Benz, and Volkswagen models—but it’s notoriously difficult to upgrade because of space limitations and factory housings. That’s why we engineered the H7 SL2 Pro LED headlight bulb to be as compact as possible while still delivering 1800 steady lumens of output.
Many H7 LED replacement headlight bulbs on the market use oversized heat sinks or bulky external drivers that make installation a nightmare. Ours is a plug-and-play solution with a small form factor and top-mounted cooling fan, making it a perfect fit for tight housings without sacrificing performance.
Why Choose SL2 Pro?
All SL2 Pro bulbs are designed with Thermal Separation Technology (TST), an advanced system that isolates heat from the LED emitter and rapidly dissipates it using an integrated fan. This design ensures long-term reliability even in harsh environments.
Unlike many aftermarket bulbs that require additional wiring or can’t maintain correct focus, the SL2 Pro maintains the exact light source position of your factory halogen, ensuring the beam pattern remains safe and effective.
And of course, there’s no external driver or harness to mess with. These bulbs are fully plug-and-play—just remove your stock bulbs and drop these in. It’s that simple.
Where Can I Buy SL2 Pro Bulbs?
Ready to make the switch? You can pick up the new H13, H4, and H7 SL2 Pro LED bulbs directly from Diode Dynamics:
Or browse the full lineup of SL2 Pro LED Bulbs here.
Need help finding the right size for your vehicle? Use our Vehicle Finder Tool or reach out to our support team anytime.
Important Note: SL2 Pro bulbs are not street-legal in the U.S. for headlight use and are intended for off-road applications. Be sure to check your local laws before installation.
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