【300% Brightness】Each 578 LED bulb uses 24pcs 4014 LED SMD chips, and provides the highest luminous efficiency compared to other chips, 3 times brighter than the stock 578 bulbs. The unique semi-circular arched design of the chip board makes light emission evenly without black spots or shadow areas 【Quick Installation】211-2 LED bulbs have built-in smart IC drivers, 99% of the cars are installed without errors and flickering. 211-2 interior dome light LED bulb is non-polar spring compact design, no need to match polarity, plug and play, super easy installation, high vibration resistance 【Long Lifespan】212-2 LED bulb adopts an all-aluminum body, perfect hollow design, which is more conducive to efficient heat dissipation. Stable input current protection circuit, ensuring a safe temperature range and consistent brightness. 212-2 canbus led bulb white extends lifespan up to 50,000hrs 【1:1 Design】578 LED bulb 6500k spring retractable replaceable size is 39mm 40mm 41mm 42mm 1.54inch-1.65inch 211-2 212-2 214-2 578 576 560 569 6411 6413 6429 12844 DE4410 bulbs. 578 LED interior car dome light bulbs use the same 1:1 socket as halogen bulbs to ensure a perfect match with your car 【Wide Application】 Car interior dome Light, courtesy light, map light, door light, glove box light, trunk light, cargo light, luggage compartment, reading light, stepwell light, vanity light, etc. Check your vehicles owners manual or the OEM bulb to confirm the bulb size before placing an order AUXITO 578 LED Bulbs 211-2 212-2 Festoon Bulb 39mm 41mm 42mm LED Lights Bulb 6500K White Extremely Bright 4014 SMD for Car Truck LED Interior Dome Map Door Courtesy Lights License Plate Light Parking Light, 4 Pack