NOTE: ? Please refer to the product images for your vehicle’s bulb size compatibility chart. Do NOT purchase before confirming your car's bulb size. High-Power CSP LED Chips: ? Designed with advanced CSP LED technology, these H4 LED headlight bulbs are up to 500% brighter than stock halogen bulbs. They deliver focused beam patterns with wider and farther lighting range, ensuring clearer visibility and safer night driving EASY PLUG & PLAY INSTALLATION: ? Features a compact 0.72-inch low-profile design that fits 95% of vehicles. The all-in-one design requires no modifications—simply plug in and install within 15 minutes for quick and hassle-free setup. SUPERIOR HEAT DISSIPATION: ? Built with a high-speed silent cooling fan operating at 10,000 RPM to keep the bulbs cool during use. The die-cast aluminum body ensures efficient and rapid heat dissipation, enhancing performance and extending bulb lifespan. IMPORTANT NOTE: ? H4 LED bulbs are compatible only with vehicles that support H4 3-pin sockets. These will not fit in 2-pin sockets. Please verify your vehicle’s bulb type via the car manual, service provider, or bulb size chart before purchase. Professional installation is recommended, as some tools and skills may be required.