Secure seal to prevent leaks and spills Designed to form a tight, reliable seal on the washer fluid reservoir to keep fluid contained and maintain windshield cleaning performance. Helps reduce the risk of fluid loss and messy spills during driving, filling, or storage. Durable, wear-resistant construction Made from quality plastic with toughness and crack resistance for long-term use. Resists wear and environmental stress so the cap continues to perform after repeated removals and reinstallation. Keeps reservoir clean Effectively blocks dust, dirt and other impurities from entering the washer fluid tank, protecting the pump and nozzles from contamination. Helps preserve fluid quality and reduces the chance of clogging or damage to the washer system. Simple, tool installation Press-fit design installs quickly and securely—no tools required. Fast replacement makes routine maintenance or emergency swaps simple and convenient. Practical attributes Function: replacement windshield washer fluid/washer reservoir cap that seals and protects the tank. Material: durable plastic, wear-resistant and crack-resistant. Performance: reliable sealing, dust blocking, and long-term durability. Compatibility: intended as a direct replacement cap for suitable windshield washer reservoirs (verify fit for your vehicle's washer neck before use). Common use scenarios Replacing a cracked or missing washer fluid cap after winter damage or an impact. Preventing dirt and debris from entering the reservoir during routine engine bay cleaning or off-road use. Quick maintenance swap when topping up washer fluid to ensure a proper seal and avoid spills. What you get A robust, easy-to-install windshield washer fluid cap that preserves washer system performance, prevents contamination, and reduces the risk of leaks or spills.