Leakproof sealing and reliable cleaning performance: This water filling cap uses a unique sealing mechanism to prevent windshield washer fluid from leaking or spilling, helping maintain cleaning results every time you spray. Dirt and impurity protection: In addition to sealing, the cap effectively blocks dirt and impurities from entering the washer fluid reservoir, helping keep the interior of the tank cleaner. Exact 1:1 fit and 1piece design: The windshield washer cap is designed for a precise 1:1 match with your car, covering the wiper fluid opening with a singlepiece construction to ensure a tight, reliable seal. Easy installation and removal: Simply remove the old reservoir cap and install the latest cap on the tank. Ensure it is properly installed and sealed to prevent leakage. When not in use, you can remove it quickly to save time and energy. Pre reminder: Please confirm or measure the size of your vehicle before to ensure compatibility with our product. Practical use scenarios: During routine maintenance or DIY replacement, swap in this cap to restore a tight seal and prevent leaks. In dusty or dirty work environments, use this cap to help keep the washer fluid reservoir clean and from contaminants. On long trips or frequent refills, rely on the 1piece seal to maintain reliable performance and reduce the risk of fluid leakage during vehicle operation.