The Tesla Model 3/Y/S/X Bottle Cap 1131028-00-A is a genuine OEM replacement cap designed to provide a secure and leak-proof seal for the washer fluid reservoir. Engineered for precise fitment, this cap prevents washer fluid evaporation and contamination, ensuring the efficient operation of the windshield washer system. Made from high-quality, durable plastic, it resists cracking, warping, and exposure to temperature variations, maintaining long-term reliability. This direct-fit replacement is an essential component for proper maintenance of your Tesla’s washer system.