Windshield washer fluid cap Key benefits Prevents leaks and spills: a strong seal keeps washer fluid inside the reservoir so your windshield washer system maintains cleaning performance. Keeps fluid clean: blocks dust and contaminants to protect the reservoir and pump, reducing maintenance and prolonging component life. Durable and reliable: made from quality plastic that is wearresistant, tough, and crackresistant for longterm use. Fast replacement: simple pressin installation makes it quick and easy to swap out a damaged or missing cap. What it does Seals the windshield washer fluid reservoir to prevent leakage and contamination. Maintains proper fluid containment so washer jets and wipers perform as expected. Material and performance Constructed of durable plastic engineered for toughness, wear resistance, and crack resistance. Designed to withstand everyday exposure and handling without deforming or failing. Fit and installation Intended as a replacement washer fluid bottle cap for windshield washer reservoirs. No tools required — press into place for a secure fit and immediate use. Practical use scenarios a lost or cracked cap after servicing the washer reservoir to stop leaks and keep fluid clean. Routine maintenance: fit a cap when refilling fluid to ensure a reliable seal and protect the system from dirt. Protect the reservoir during storage or periods of infrequent use to prevent contamination and preserve washer performance. Simple, durable protection for your windshield washer reservoir — reliable sealing, dust protection, and quick installation.