Headlight washer holes are small openings near the headlights, usually found on the front bumper, that contain retractable nozzles for cleaning the headlight lenses. These washers are designed to spray high-pressure water or cleaning fluid to clear away dirt, grime, or snow, helping to maintain optimal visibility. Before ordering this product, it's important for you to double-check if your vehicle has headlight washer holes, as not all models are equipped with them. Ensuring compatibility will help avoid installation issues and ensure the product fits correctly.