5202 bulb size may fit 9009, H16, H16W, 2504, 5201, 5301, 12276C1, 15839897, 5200s, 12086, PS24W, PSX24W and PSY24W sizes. Usually, it is used for the fog lights (2007-2012 GMC Acadia and 2008-2012 Ford Escape).
You can find this size available in HID and LED Conversion Kits. HIDs will provide you with the great light output with much less consumption of power. There are 35W and 55W options. 55W kits produce 20% more light than 35W HID kit. HIDs are available in a wide range of color temperatures (12 options).
5202 LED kits have Cree Chips. LED bulbs have 3 chips on each side to provide a 360 degrees light emission. You will get two pairs of color filters: yellow and blue. The bulbs can be installed without them to get white light output.