Key benefits Waterproof design protects the components inside the windshield wiper water bottle from rain and moisture, helping keep the internal parts dry and functioning properly, especially in humid climates. Lightweight yet strong and weatherproof, providing a reliable replacement to prevent leaks in your water tank. Quick installation that requires no modifications and takes seconds to complete. Compatibility and design Note: Before , please ensure our parts are suitable for your vehicle. Easy installation No tools or modifications required. Remove the old windshield wiper fluid cap that was lost and install the gasket cap onto the gasket. Make sure the gasket cap seals onto the gasket to avoid any glass spillage. What you get and how it performs Durable, lightweight construction designed to withstand daily vehicle use. Weatherproof performance helps maintain the integrity of the washer fluid system. Designed as a direct replacement for the original water tank cap to prevent leaks and maintain proper function of the washer fluid system. Use scenarios Scenario 1: Replacing a lost or damaged cap to restore a proper seal on the washer fluid water tank after vehicle maintenance. Scenario 2: Installing in vehicles operating in rainy or humid climates to protect internal reservoir components from moisture intrusion. Scenario 3: Quick upgrade during routine car upkeep or when preparing a vehicle for ownership, ensuring reliable washer fluid performance without downtime.