CANBUS-READY for 98% VEHICLES: Our H4 LED headlight bulb work with 98% of vehicle's computer system without error, but some sensitive models may require additional decoder to be installed, may occur flickering or error message. Please contact us directly for a decoder if your car requires.
SILENT HEAT DISSIPATION & LONG LIFESPAN: Far lower than the halogen lamp, 40% cooler than others, high quality aluminum body with copper core for maximum heat dispense, keeps the H4 LED headlight conversion kit in good conditions. > 30,000 hours service life.
360° ADJUSTABLE MOUNTING BRACKET: Besides the high brightness, we've designed the latest 360 degree fully adjustable mounting collar, you can make a simple angle adjustments for proper alignment of the bulb mounts to get the perfect light output and correct beam pattern. NOTE: The plug of our H4/9003 LED headlight kit have polarity, if it doesn't light, please invert the plug and reconnect.
EASY TO INSTALL: All-in-one compact design H4 LED bulb with driver, PLUG-N-PLAY installation. Heatsink part only has 23MM length, fit for 99% vehicles. After installation, there's enough space for the headlight breathing. Fits for most of the car OEM dust cover. Can be installed in 15 minutes.

Silent Turbo Cooling Fan - bulb provide 7,000 RPM Powerful Turbo Cool fan. No matter how good the aluminum material can be, the turbo fan design bulb are always winner, it will effectively control heat ensuring continuous full lumens output.
Plug and Play Design - bulbs are All-in-one built-in driver design makes it easy to install in 10 mins. 1:1 as original bulb size, perfectly replace factory headlamps and no other tools required.
IP67 Waterproof - Works underwater, rainproof driver, cloudy days, foggy days, rainy days, snowy days even in extreme situations. We offer lifetime support.
Buy with confidence - Prompt online support available. Your 100% satisfaction is our only goal. If you are not sure which bulb size that your vehicle requires,please contact us or check your owner's manual or the part number on your original bulbs to confirm the bulb size. We are always here!