- Product features: Our carefully designed and scientifically constructed product replaces the old lid of the windshield washer fluid reservoir and effectively holds the fluid to prevent leaks. - Product material: The reservoir lid for the tank cover is made from special materials, rust resistant, heat resistant, and wear resistant. Easy to clean, our design is intended to replace the old windshield washer fluid reservoir lid with confidence. - Product installation: Remove the old lid of the washer reservoir and mount the existing lid on the washer reservoir. Ensure it is installed and sealed to avoid leaks. - Function: Our radiator cap ensures a seal under normal conditions and prevents coolant leaks. - Use scenarios: - Replacing a degraded lid on older vehicles to stop washer fluid leaks. - Vehicle service shops performing maintenance to replace worn lids and speed up repairs. - DIY car owners replacing the lid during routine maintenance to maintain reservoir seal and reliability.