Are your Land Rover Discovery 4 (LR4) headlights looking yellowed, foggy, or scratched? Instead of replacing the entire expensive headlight assembly, you can often just replace the clear plastic lens cover. This is a brand new left-side headlight lens made from durable PC (polycarbonate) plastic. It's designed to replace the original cover on models from 2010 to 2013. Installing it requires removing the headlight from the vehicle, carefully heating the old adhesive to separate the old lens, cleaning the housing, and then bonding the new lens on with fresh adhesive (not included, but butyl rubber \snake glue\ is commonly used). It's a more involved DIY project best suited for those comfortable with auto body work, but it can save you a significant amount of money and restore like-new clarity and light output to your headlights. Always consider professional installation if you're unsure. Please verify this is for the correct side (left/passenger side for US vehicles) and year range for your specific Discovery 4.