Partsam 42mm Festoon LED Light Bulbs LED Interior Lights Map Dome Lights Bulbs 211-2 578 569 Festoon LED Bulb - Blue (8 Pcs) SPECIAL 42mm FESTOON LED BULBS SET, including 8Pcs 211-2 578 569 festoon LED interior dome light bulbs WIDE APPLICATION RANGE: can fit well for dome light, license plate light, side door courtesy, cargo light, or trunk light etc. (Depending on the model of your car, some fit more than 1 position, please make sure the double ended socket type and the length ( Approx 42 mm ) of this bulb can fit your car, Please double check user manual or contact the customer service before purchase.) IDEAL REPLACEMENT FOR ALL 42mm FESTOON LED BULBS: 42mm festoon model type is easily integrated as a replacement for the following bulb model numbers: 578, 211-2, 212-2, 214-2,569, 211, 211-2, 212, 212-2, 214-2, 569, 578, 6413, 6429, 12844, DE4410 etc. ENERGY-SAVING, LOW TEMPERATURE, very faster on or off response time and vibration resistant. Low power consumption, long-lasting Life, great replacement car LED interior dome light IMPORTANT NOTICE: If the LED does not light up, simply rotating it 180 degrees (reverse the polarity). 100% Satisfaction Guarantee, please feel free to contact us if you have any further questions!