L+R Headlight Lens Covers Clear For Mercedes GLS X166 GLS450 GLS550 2016-2019Restore the clarity and original appearance of your GLSs headlights with these high quality replacement outer lens covers. Over time, factory headlight lenses can become yellowed, scratched, or cracked this pair of clear polycarbonate lenses refreshes the look of your vehicle and improves light output without replacing the entire headlight assembly. Fitment Details: For Mercedes Benz GLS Class X166 2017 2019 Must remove headlight assembly first